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#!/usr/bin/env python2.7
# Copyright 2017, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
""" Runs the entire bm_*.py pipeline, and possible comments on the PR """
import bm_constants
import bm_build
import bm_run
import bm_diff
import sys
import os
import argparse
import multiprocessing
import subprocess
sys.path.append(
os.path.join(
os.path.dirname(sys.argv[0]), '..', '..', 'run_tests', 'python_utils'))
import comment_on_pr
def _args():
argp = argparse.ArgumentParser(
description='Perform diff on microbenchmarks')
argp.add_argument(
'-t',
'--track',
choices=sorted(bm_constants._INTERESTING),
nargs='+',
default=sorted(bm_constants._INTERESTING),
help='Which metrics to track')
argp.add_argument(
'-b',
'--benchmarks',
nargs='+',
choices=bm_constants._AVAILABLE_BENCHMARK_TESTS,
default=bm_constants._AVAILABLE_BENCHMARK_TESTS,
help='Which benchmarks to run')
argp.add_argument(
'-d',
'--diff_base',
type=str,
help='Commit or branch to compare the current one to')
argp.add_argument(
'-o',
'--old',
default='old',
type=str,
help='Name of baseline run to compare to. Ususally just called "old"')
argp.add_argument(
'-r',
'--repetitions',
type=int,
default=1,
help='Number of repetitions to pass to the benchmarks')
argp.add_argument(
'-l',
'--loops',
type=int,
default=20,
help='Number of times to loops the benchmarks. More loops cuts down on noise'
)
argp.add_argument(
'-j',
'--jobs',
type=int,
default=multiprocessing.cpu_count(),
help='Number of CPUs to use')
args = argp.parse_args()
assert args.diff_base or args.old, "One of diff_base or old must be set!"
if args.loops < 3:
print "WARNING: This run will likely be noisy. Increase loops."
return args
def eintr_be_gone(fn):
"""Run fn until it doesn't stop because of EINTR"""
def inner(*args):
while True:
try:
return fn(*args)
except IOError, e:
if e.errno != errno.EINTR:
raise
return inner
def main(args):
bm_build.build('new', args.benchmarks, args.jobs)
old = args.old
if args.diff_base:
old = 'old'
where_am_i = subprocess.check_output(
['git', 'rev-parse', '--abbrev-ref', 'HEAD']).strip()
subprocess.check_call(['git', 'checkout', args.diff_base])
try:
bm_build.build('old', args.benchmarks, args.jobs)
finally:
subprocess.check_call(['git', 'checkout', where_am_i])
subprocess.check_call(['git', 'submodule', 'update'])
bm_run.run('new', args.benchmarks, args.jobs, args.loops, args.repetitions)
bm_run.run(old, args.benchmarks, args.jobs, args.loops, args.repetitions)
diff, note = bm_diff.diff(args.benchmarks, args.loops, args.track, old,
'new')
if diff:
text = 'Performance differences noted:\n' + diff
else:
text = 'No significant performance differences'
print('%s\n%s' % (note, text))
comment_on_pr.comment_on_pr('```\n%s\n\n%s\n```' % (note, text))
if __name__ == '__main__':
args = _args()
main(args)
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