Experiment with turning CPUs off during perf

Perf was nice and flat after https://skia-review.googlesource.com/c/skia/+/83240
but there was a 4-5x slowdown on the benchmarks themselves,
indicating that perhaps we were running nanobench on the
LITTLE cores (now on powersave) instead of the big cores we
thought (which were recently scaled down).

This experiment will show us FOR CERTAIN that we are
running on core 0 or 1 which is at .6 max frequency.

We expect to see a speedup from the previous results.

This is leading to turning of CPUs we don't need
to make sure nanobench is running on the ones we expect.

Bug: skia:
NOTRY=true
Change-Id: Ida65181e4d90e778e65e3f22d761288b9ade64f6
Reviewed-on: https://skia-review.googlesource.com/84201
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Kevin Lubick <kjlubick@google.com>

18 files changed, 1357 insertions, 540 deletions

diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Debug-All-Android.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Debug-All-Android.json
index 07d379805a..29cf14260a 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Debug-All-Android.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Debug-All-Android.json
@@ -645,50 +645,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "interactive"
-    ],
-    "env": {
-      "BUILDTYPE": "Debug",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to interactive",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -698,7 +654,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -733,7 +689,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -742,7 +698,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -804,6 +760,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Debug/nanobench",
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-Pixel-GPU-Adreno530-arm64-Debug-All-Android.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-Pixel-GPU-Adreno530-arm64-Debug-All-Android.json
index 798cf4a5f1..8428bbc0b1 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-Pixel-GPU-Adreno530-arm64-Debug-All-Android.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-Pixel-GPU-Adreno530-arm64-Debug-All-Android.json
@@ -645,50 +645,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "powersave"
-    ],
-    "env": {
-      "BUILDTYPE": "Debug",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to powersave",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -698,7 +654,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -733,7 +689,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -742,7 +698,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -804,6 +760,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Debug/nanobench",
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/cpu_scale_failed.json b/infra/bots/recipe_modules/flavor/examples/full.expected/cpu_scale_failed.json
index 2bb10f7f9b..56a8b85170 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/cpu_scale_failed.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/cpu_scale_failed.json
@@ -645,50 +645,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "interactive"
-    ],
-    "env": {
-      "BUILDTYPE": "Debug",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to interactive",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -698,7 +654,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -733,7 +689,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -742,7 +698,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "step returned non-zero exit code: 1",
@@ -811,7 +767,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -820,7 +776,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000 (attempt 2)",
+    "name": "Scale CPU 0 to 0.600000 (attempt 2)",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -882,6 +838,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Debug/nanobench",
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/failed_infra_step.json b/infra/bots/recipe_modules/flavor/examples/full.expected/failed_infra_step.json
index 4558c95416..9a8ef6c86e 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/failed_infra_step.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/failed_infra_step.json
@@ -645,50 +645,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "interactive"
-    ],
-    "env": {
-      "BUILDTYPE": "Debug",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to interactive",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -698,7 +654,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -733,7 +689,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -742,7 +698,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -804,6 +760,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Debug/nanobench",
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/failed_read_version.json b/infra/bots/recipe_modules/flavor/examples/full.expected/failed_read_version.json
index 320a36d4fd..6508c98600 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/failed_read_version.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/failed_read_version.json
@@ -699,50 +699,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "interactive"
-    ],
-    "env": {
-      "BUILDTYPE": "Debug",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to interactive",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -752,7 +708,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -787,7 +743,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -796,7 +752,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -858,6 +814,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Debug/nanobench",
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/retry_adb_command.json b/infra/bots/recipe_modules/flavor/examples/full.expected/retry_adb_command.json
index 40a6b63a15..83f7dfd673 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/retry_adb_command.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/retry_adb_command.json
@@ -699,50 +699,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "interactive"
-    ],
-    "env": {
-      "BUILDTYPE": "Debug",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to interactive",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -752,7 +708,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -787,7 +743,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -796,7 +752,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -858,6 +814,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Debug/nanobench",
diff --git a/infra/bots/recipe_modules/flavor/examples/full.py b/infra/bots/recipe_modules/flavor/examples/full.py
index d347eef7f1..5535623add 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.py
+++ b/infra/bots/recipe_modules/flavor/examples/full.py
@@ -195,5 +195,5 @@ def GenTests(api):
                      revision='abc123',
                      path_config='kitchen',
                      swarm_out_dir='[SWARM_OUT_DIR]') +
-      api.step_data('Scale CPU 2 to 0.600000', retcode=1)
+      api.step_data('Scale CPU 0 to 0.600000', retcode=1)
   )
diff --git a/infra/bots/recipe_modules/flavor/gn_android_flavor.py b/infra/bots/recipe_modules/flavor/gn_android_flavor.py
index c280e7feab..f354611cdf 100644
--- a/infra/bots/recipe_modules/flavor/gn_android_flavor.py
+++ b/infra/bots/recipe_modules/flavor/gn_android_flavor.py
@@ -88,6 +88,19 @@ class GNAndroidFlavorUtils(default_flavor.DefaultFlavorUtils):
     'Pixel2XL': [4, 0]
   }
 
+  # Maps device -> number of cores. TODO(kjlubick) if we want to do this
+  # long term, compute this dynamically.
+  total_cpus = {
+    'AndroidOne': 4,
+    'Nexus5': 4,
+    'Nexus7': 4,
+    'Nexus5x': 6,
+    'NexusPlayer': 4,
+    'Pixel': 4,
+    'Pixel2XL': 8,
+    'PixelC': 4,
+  }
+
   def _scale_for_dm(self):
     device = self.m.vars.builder_cfg.get('model')
     if (device in self.rootable_blacklist or
@@ -107,18 +120,14 @@ class GNAndroidFlavorUtils(default_flavor.DefaultFlavorUtils):
       self.m.vars.internal_hardware_label):
       return
 
-    cpus = self.cpus_to_scale.get(device, [0])
+    # Scale just the first two cpus.
+    self._set_governor(0, 'userspace')
+    self._scale_cpu(0, 0.6)
 
-    for i in cpus[1:]:
+    for i in range(2, self.total_cpus[device]):
       # NexusPlayer only has "ondemand userspace interactive performance"
-      if device == 'NexusPlayer':
-        self._set_governor(i, 'interactive')
-      else:
-        self._set_governor(i, 'powersave')
+      self._disable_cpu(i)
 
-    # Scale just the first (primary) cpu.
-    self._set_governor(cpus[0], 'userspace')
-    self._scale_cpu(cpus[0], 0.6)
 
   def _set_governor(self, cpu, gov):
     self._ever_ran_adb = True
@@ -153,6 +162,38 @@ if actual_gov != gov:
         timeout=30)
 
 
+  def _disable_cpu(self, cpu):
+    self._ever_ran_adb = True
+    self.m.run.with_retry(self.m.python.inline,
+        'Disabling CPU %d' % cpu,
+        3, # attempts
+        program="""
+import os
+import subprocess
+import sys
+import time
+ADB = sys.argv[1]
+cpu = int(sys.argv[2])
+
+log = subprocess.check_output([ADB, 'root'])
+# check for message like 'adbd cannot run as root in production builds'
+print log
+if 'cannot' in log:
+  raise Exception('adb root failed')
+
+subprocess.check_output([ADB, 'shell', 'echo 0 > '
+    '/sys/devices/system/cpu/cpu%d/online' % cpu])
+actual_status = subprocess.check_output([ADB, 'shell', 'cat '
+    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()
+if actual_status != str(0):
+  raise Exception('(actual, expected) (%s, %d)'
+                  % (actual_gov, gov))
+""",
+        args = [self.ADB_BINARY, cpu],
+        infra_step=True,
+        timeout=30)
+
+
   def _scale_cpu(self, cpu, target_percent):
     self._ever_ran_adb = True
     self.m.run.with_retry(self.m.python.inline,
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus5-GPU-Adreno330-arm-Debug-All-Android.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus5-GPU-Adreno330-arm-Debug-All-Android.json
index 565c11a168..fe15e71223 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus5-GPU-Adreno330-arm-Debug-All-Android.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus5-GPU-Adreno330-arm-Debug-All-Android.json
@@ -658,6 +658,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Debug/nanobench",
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus5x-GPU-Adreno418-arm64-Release-All-Android.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus5x-GPU-Adreno418-arm64-Release-All-Android.json
index d593cca23e..f8657e537c 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus5x-GPU-Adreno418-arm64-Release-All-Android.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus5x-GPU-Adreno418-arm64-Release-All-Android.json
@@ -579,50 +579,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/opt/infra-android/tools/adb",
       "0",
-      "powersave"
-    ],
-    "env": {
-      "BUILDTYPE": "Release",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to powersave",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/opt/infra-android/tools/adb",
-      "4",
       "userspace"
     ],
     "env": {
@@ -632,7 +588,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 4's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -667,7 +623,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/opt/infra-android/tools/adb",
       "0.6",
-      "4"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Release",
@@ -676,7 +632,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 4 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -738,6 +694,174 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/opt/infra-android/tools/adb",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/opt/infra-android/tools/adb",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/opt/infra-android/tools/adb",
+      "4"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 4",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/opt/infra-android/tools/adb",
+      "5"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 5",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/opt/infra-android/tools/adb",
       "push",
       "[START_DIR]/out/Release/nanobench",
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-CPU-Tegra3-arm-Release-All-Android.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-CPU-Tegra3-arm-Release-All-Android.json
index 6ee0ce1b68..2ad527215d 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-CPU-Tegra3-arm-Release-All-Android.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-CPU-Tegra3-arm-Release-All-Android.json
@@ -694,6 +694,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Release/nanobench",
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-All-Android.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-All-Android.json
index 5ec1e27a1e..0e96e04ee5 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-All-Android.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-All-Android.json
@@ -694,6 +694,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Release/nanobench",
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-All-Android.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-All-Android.json
index a605a5b837..17b09773ed 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-All-Android.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-All-Android.json
@@ -579,50 +579,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "interactive"
-    ],
-    "env": {
-      "BUILDTYPE": "Release",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to interactive",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -632,7 +588,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -667,7 +623,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Release",
@@ -676,7 +632,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -738,6 +694,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Release/nanobench",
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-All-Android_Vulkan.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-All-Android_Vulkan.json
index bc6467ddf7..23cc4b1f1d 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-All-Android_Vulkan.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-All-Android_Vulkan.json
@@ -579,50 +579,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "interactive"
-    ],
-    "env": {
-      "BUILDTYPE": "Release",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to interactive",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -632,7 +588,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -667,7 +623,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Release",
@@ -676,7 +632,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -738,6 +694,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Release/nanobench",
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-All-Android_Skpbench.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-All-Android_Skpbench.json
index e2caf96b59..c5debd25d9 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-All-Android_Skpbench.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-All-Android_Skpbench.json
@@ -694,6 +694,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Release/nanobench",
diff --git a/infra/bots/recipes/perf.expected/cpu_scale_failed.json b/infra/bots/recipes/perf.expected/cpu_scale_failed.json
index 87cfb6d283..ffdc7de485 100644
--- a/infra/bots/recipes/perf.expected/cpu_scale_failed.json
+++ b/infra/bots/recipes/perf.expected/cpu_scale_failed.json
@@ -543,50 +543,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "interactive"
-    ],
-    "env": {
-      "BUILDTYPE": "Debug",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to interactive",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -596,7 +552,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -631,7 +587,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -640,7 +596,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "step returned non-zero exit code: 1",
@@ -709,7 +665,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -718,7 +674,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000 (attempt 2)",
+    "name": "Scale CPU 0 to 0.600000 (attempt 2)",
     "timeout": 30,
     "~followup_annotations": [
       "step returned non-zero exit code: 1",
@@ -787,7 +743,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -796,7 +752,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000 (attempt 3)",
+    "name": "Scale CPU 0 to 0.600000 (attempt 3)",
     "timeout": 30,
     "~followup_annotations": [
       "step returned non-zero exit code: 1",
@@ -927,7 +883,7 @@
   },
   {
     "name": "$result",
-    "reason": "Failed build steps: Scale CPU 2 to 0.600000, Scale CPU 2 to 0.600000 (attempt 2), Scale CPU 2 to 0.600000 (attempt 3), Scale CPU 2 to 0.600000 (attempt 3)",
+    "reason": "Failed build steps: Scale CPU 0 to 0.600000, Scale CPU 0 to 0.600000 (attempt 2), Scale CPU 0 to 0.600000 (attempt 3), Scale CPU 0 to 0.600000 (attempt 3)",
     "recipe_result": null,
     "status_code": 1
   }
diff --git a/infra/bots/recipes/perf.expected/cpu_scale_failed_once.json b/infra/bots/recipes/perf.expected/cpu_scale_failed_once.json
index be000ee512..8350a207f1 100644
--- a/infra/bots/recipes/perf.expected/cpu_scale_failed_once.json
+++ b/infra/bots/recipes/perf.expected/cpu_scale_failed_once.json
@@ -543,50 +543,6 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
       "/usr/bin/adb.1.0.35",
       "0",
-      "interactive"
-    ],
-    "env": {
-      "BUILDTYPE": "Debug",
-      "CHROME_HEADLESS": "1",
-      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
-      "SKIA_OUT": "[START_DIR]/out"
-    },
-    "infra_step": true,
-    "name": "Set CPU 0's governor to interactive",
-    "timeout": 30,
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@import time@@@",
-      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@gov = sys.argv[3]@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
-      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
-      "@@@STEP_LOG_LINE@python.inline@print log@@@",
-      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo \"%s\" > '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])@@@",
-      "@@@STEP_LOG_LINE@python.inline@actual_gov = subprocess.check_output([ADB, 'shell', 'cat '@@@",
-      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()@@@",
-      "@@@STEP_LOG_LINE@python.inline@if actual_gov != gov:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %s)'@@@",
-      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\ngov = sys.argv[3]\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo \"%s\" > '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % (gov, cpu)])\nactual_gov = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor' % cpu]).strip()\nif actual_gov != gov:\n  raise Exception('(actual, expected) (%s, %s)'\n                  % (actual_gov, gov))\n",
-      "/usr/bin/adb.1.0.35",
-      "2",
       "userspace"
     ],
     "env": {
@@ -596,7 +552,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Set CPU 2's governor to userspace",
+    "name": "Set CPU 0's governor to userspace",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -631,7 +587,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -640,7 +596,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000",
+    "name": "Scale CPU 0 to 0.600000",
     "timeout": 30,
     "~followup_annotations": [
       "step returned non-zero exit code: 1",
@@ -709,7 +665,7 @@
       "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ntarget_percent = float(sys.argv[2])\ncpu = int(sys.argv[3])\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nroot = '/sys/devices/system/cpu/cpu%d/cpufreq' %cpu\n\n# All devices we test on give a list of their available frequencies.\navailable_freqs = subprocess.check_output([ADB, 'shell',\n    'cat %s/scaling_available_frequencies' % root])\n\n# Check for message like '/system/bin/sh: file not found'\nif available_freqs and '/system/bin/sh' not in available_freqs:\n  available_freqs = sorted(\n      int(i) for i in available_freqs.strip().split())\nelse:\n  raise Exception('Could not get list of available frequencies: %s' %\n                  available_freqs)\n\nmaxfreq = available_freqs[-1]\ntarget = int(round(maxfreq * target_percent))\nfreq = maxfreq\nfor f in reversed(available_freqs):\n  if f <= target:\n    freq = f\n    break\n\nprint 'Setting frequency to %d' % freq\n\n# If scaling_max_freq is lower than our attempted setting, it won't take.\n# We must set min first, because if we try to set max to be less than min\n# (which sometimes happens after certain devices reboot) it returns a\n# perplexing permissions error.\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '%s/scaling_min_freq' % root])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_max_freq' % (freq, root)])\nsubprocess.check_output([ADB, 'shell', 'echo %d > '\n    '%s/scaling_setspeed' % (freq, root)])\ntime.sleep(5)\nactual_freq = subprocess.check_output([ADB, 'shell', 'cat '\n    '%s/scaling_cur_freq' % root]).strip()\nif actual_freq != str(freq):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_freq, freq))\n",
       "/usr/bin/adb.1.0.35",
       "0.6",
-      "2"
+      "0"
     ],
     "env": {
       "BUILDTYPE": "Debug",
@@ -718,7 +674,7 @@
       "SKIA_OUT": "[START_DIR]/out"
     },
     "infra_step": true,
-    "name": "Scale CPU 2 to 0.600000 (attempt 2)",
+    "name": "Scale CPU 0 to 0.600000 (attempt 2)",
     "timeout": 30,
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -780,6 +736,90 @@
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "2"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 2",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nimport time\nADB = sys.argv[1]\ncpu = int(sys.argv[2])\n\nlog = subprocess.check_output([ADB, 'root'])\n# check for message like 'adbd cannot run as root in production builds'\nprint log\nif 'cannot' in log:\n  raise Exception('adb root failed')\n\nsubprocess.check_output([ADB, 'shell', 'echo 0 > '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu])\nactual_status = subprocess.check_output([ADB, 'shell', 'cat '\n    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()\nif actual_status != str(0):\n  raise Exception('(actual, expected) (%s, %d)'\n                  % (actual_gov, gov))\n",
+      "/usr/bin/adb.1.0.35",
+      "3"
+    ],
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[START_DIR]/out"
+    },
+    "infra_step": true,
+    "name": "Disabling CPU 3",
+    "timeout": 30,
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@import time@@@",
+      "@@@STEP_LOG_LINE@python.inline@ADB = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@cpu = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output([ADB, 'root'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@# check for message like 'adbd cannot run as root in production builds'@@@",
+      "@@@STEP_LOG_LINE@python.inline@print log@@@",
+      "@@@STEP_LOG_LINE@python.inline@if 'cannot' in log:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('adb root failed')@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@subprocess.check_output([ADB, 'shell', 'echo 0 > '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu])@@@",
+      "@@@STEP_LOG_LINE@python.inline@actual_status = subprocess.check_output([ADB, 'shell', 'cat '@@@",
+      "@@@STEP_LOG_LINE@python.inline@    '/sys/devices/system/cpu/cpu%d/online' % cpu]).strip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@if actual_status != str(0):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  raise Exception('(actual, expected) (%s, %d)'@@@",
+      "@@@STEP_LOG_LINE@python.inline@                  % (actual_gov, gov))@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
       "/usr/bin/adb.1.0.35",
       "push",
       "[START_DIR]/out/Debug/nanobench",
diff --git a/infra/bots/recipes/perf.py b/infra/bots/recipes/perf.py
index 17c73557cb..99e68af525 100644
--- a/infra/bots/recipes/perf.py
+++ b/infra/bots/recipes/perf.py
@@ -461,7 +461,7 @@ def GenTests(api):
                                      'svg', 'VERSION'),
         api.path['start_dir'].join('tmp', 'uninteresting_hashes.txt')
     ) +
-    api.step_data('Scale CPU 2 to 0.600000', retcode=1)
+    api.step_data('Scale CPU 0 to 0.600000', retcode=1)
   )
 
   yield (
@@ -480,7 +480,7 @@ def GenTests(api):
                                      'svg', 'VERSION'),
         api.path['start_dir'].join('tmp', 'uninteresting_hashes.txt')
     ) +
-    api.step_data('Scale CPU 2 to 0.600000', retcode=1)+
-    api.step_data('Scale CPU 2 to 0.600000 (attempt 2)', retcode=1)+
-    api.step_data('Scale CPU 2 to 0.600000 (attempt 3)', retcode=1)
+    api.step_data('Scale CPU 0 to 0.600000', retcode=1)+
+    api.step_data('Scale CPU 0 to 0.600000 (attempt 2)', retcode=1)+
+    api.step_data('Scale CPU 0 to 0.600000 (attempt 3)', retcode=1)
   )