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#!/usr/bin/env python2.7
# Copyright 2017 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import collections
import ctypes
import math
import sys
import yaml
import json
with open('src/core/lib/debug/stats_data.yaml') as f:
attrs = yaml.load(f.read())
REQUIRED_FIELDS = ['name', 'doc']
def make_type(name, fields):
return (collections.namedtuple(name, ' '.join(
list(set(REQUIRED_FIELDS + fields)))), [])
def c_str(s, encoding='ascii'):
if isinstance(s, unicode):
s = s.encode(encoding)
result = ''
for c in s:
if not (32 <= ord(c) < 127) or c in ('\\', '"'):
result += '\\%03o' % ord(c)
else:
result += c
return '"' + result + '"'
types = (
make_type('Counter', []),
make_type('Histogram', ['max', 'buckets']),
)
inst_map = dict((t[0].__name__, t[1]) for t in types)
stats = []
for attr in attrs:
found = False
for t, lst in types:
t_name = t.__name__.lower()
if t_name in attr:
name = attr[t_name]
del attr[t_name]
lst.append(t(name=name, **attr))
found = True
break
assert found, "Bad decl: %s" % attr
def dbl2u64(d):
return ctypes.c_ulonglong.from_buffer(ctypes.c_double(d)).value
def shift_works_until(mapped_bounds, shift_bits):
for i, ab in enumerate(zip(mapped_bounds, mapped_bounds[1:])):
a, b = ab
if (a >> shift_bits) == (b >> shift_bits):
return i
return len(mapped_bounds)
def find_ideal_shift(mapped_bounds, max_size):
best = None
for shift_bits in reversed(range(0, 64)):
n = shift_works_until(mapped_bounds, shift_bits)
if n == 0: continue
table_size = mapped_bounds[n - 1] >> shift_bits
if table_size > max_size: continue
if table_size > 65535: continue
if best is None:
best = (shift_bits, n, table_size)
elif best[1] < n:
best = (shift_bits, n, table_size)
print best
return best
def gen_map_table(mapped_bounds, shift_data):
tbl = []
cur = 0
print mapped_bounds
mapped_bounds = [x >> shift_data[0] for x in mapped_bounds]
print mapped_bounds
for i in range(0, mapped_bounds[shift_data[1] - 1]):
while i > mapped_bounds[cur]:
cur += 1
tbl.append(cur)
return tbl
static_tables = []
def decl_static_table(values, type):
global static_tables
v = (type, values)
for i, vp in enumerate(static_tables):
if v == vp: return i
print "ADD TABLE: %s %r" % (type, values)
r = len(static_tables)
static_tables.append(v)
return r
def type_for_uint_table(table):
mv = max(table)
if mv < 2**8:
return 'uint8_t'
elif mv < 2**16:
return 'uint16_t'
elif mv < 2**32:
return 'uint32_t'
else:
return 'uint64_t'
def gen_bucket_code(histogram):
bounds = [0, 1]
done_trivial = False
done_unmapped = False
first_nontrivial = None
first_unmapped = None
while len(bounds) < histogram.buckets + 1:
if len(bounds) == histogram.buckets:
nextb = int(histogram.max)
else:
mul = math.pow(
float(histogram.max) / bounds[-1],
1.0 / (histogram.buckets + 1 - len(bounds)))
nextb = int(math.ceil(bounds[-1] * mul))
if nextb <= bounds[-1] + 1:
nextb = bounds[-1] + 1
elif not done_trivial:
done_trivial = True
first_nontrivial = len(bounds)
bounds.append(nextb)
bounds_idx = decl_static_table(bounds, 'int')
if done_trivial:
first_nontrivial_code = dbl2u64(first_nontrivial)
code_bounds = [dbl2u64(x) - first_nontrivial_code for x in bounds]
shift_data = find_ideal_shift(code_bounds[first_nontrivial:],
256 * histogram.buckets)
#print first_nontrivial, shift_data, bounds
#if shift_data is not None: print [hex(x >> shift_data[0]) for x in code_bounds[first_nontrivial:]]
code = 'value = GPR_CLAMP(value, 0, %d);\n' % histogram.max
map_table = gen_map_table(code_bounds[first_nontrivial:], shift_data)
if first_nontrivial is None:
code += ('GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_%s, value);\n' %
histogram.name.upper())
else:
code += 'if (value < %d) {\n' % first_nontrivial
code += ('GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_%s, value);\n' %
histogram.name.upper())
code += 'return;\n'
code += '}'
first_nontrivial_code = dbl2u64(first_nontrivial)
if shift_data is not None:
map_table_idx = decl_static_table(map_table,
type_for_uint_table(map_table))
code += 'union { double dbl; uint64_t uint; } _val, _bkt;\n'
code += '_val.dbl = value;\n'
code += 'if (_val.uint < %dull) {\n' % (
(map_table[-1] << shift_data[0]) + first_nontrivial_code)
code += 'int bucket = '
code += 'grpc_stats_table_%d[((_val.uint - %dull) >> %d)] + %d;\n' % (
map_table_idx, first_nontrivial_code, shift_data[0],
first_nontrivial)
code += '_bkt.dbl = grpc_stats_table_%d[bucket];\n' % bounds_idx
code += 'bucket -= (_val.uint < _bkt.uint);\n'
code += 'GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_%s, bucket);\n' % histogram.name.upper(
)
code += 'return;\n'
code += '}\n'
code += 'GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_%s, ' % histogram.name.upper(
)
code += 'grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_%d, %d));\n' % (
bounds_idx, histogram.buckets)
return (code, bounds_idx)
# utility: print a big comment block into a set of files
def put_banner(files, banner):
for f in files:
print >> f, '/*'
for line in banner:
print >> f, ' * %s' % line
print >> f, ' */'
print >> f
with open('src/core/lib/debug/stats_data.h', 'w') as H:
# copy-paste copyright notice from this file
with open(sys.argv[0]) as my_source:
copyright = []
for line in my_source:
if line[0] != '#': break
for line in my_source:
if line[0] == '#':
copyright.append(line)
break
for line in my_source:
if line[0] != '#':
break
copyright.append(line)
put_banner([H], [line[2:].rstrip() for line in copyright])
put_banner(
[H],
["Automatically generated by tools/codegen/core/gen_stats_data.py"])
print >> H, "#ifndef GRPC_CORE_LIB_DEBUG_STATS_DATA_H"
print >> H, "#define GRPC_CORE_LIB_DEBUG_STATS_DATA_H"
print >> H
print >> H, "#include <grpc/support/port_platform.h>"
print >> H
print >> H, "#include <inttypes.h>"
print >> H, "#include \"src/core/lib/iomgr/exec_ctx.h\""
print >> H
for typename, instances in sorted(inst_map.items()):
print >> H, "typedef enum {"
for inst in instances:
print >> H, " GRPC_STATS_%s_%s," % (typename.upper(),
inst.name.upper())
print >> H, " GRPC_STATS_%s_COUNT" % (typename.upper())
print >> H, "} grpc_stats_%ss;" % (typename.lower())
print >> H, "extern const char *grpc_stats_%s_name[GRPC_STATS_%s_COUNT];" % (
typename.lower(), typename.upper())
print >> H, "extern const char *grpc_stats_%s_doc[GRPC_STATS_%s_COUNT];" % (
typename.lower(), typename.upper())
histo_start = []
histo_buckets = []
histo_bucket_boundaries = []
print >> H, "typedef enum {"
first_slot = 0
for histogram in inst_map['Histogram']:
histo_start.append(first_slot)
histo_buckets.append(histogram.buckets)
print >> H, " GRPC_STATS_HISTOGRAM_%s_FIRST_SLOT = %d," % (
histogram.name.upper(), first_slot)
print >> H, " GRPC_STATS_HISTOGRAM_%s_BUCKETS = %d," % (
histogram.name.upper(), histogram.buckets)
first_slot += histogram.buckets
print >> H, " GRPC_STATS_HISTOGRAM_BUCKETS = %d" % first_slot
print >> H, "} grpc_stats_histogram_constants;"
print >> H, "#if defined(GRPC_COLLECT_STATS) || !defined(NDEBUG)"
for ctr in inst_map['Counter']:
print >> H, ("#define GRPC_STATS_INC_%s() " +
"GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_%s)") % (
ctr.name.upper(), ctr.name.upper())
for histogram in inst_map['Histogram']:
print >> H, "#define GRPC_STATS_INC_%s(value) grpc_stats_inc_%s( (int)(value))" % (
histogram.name.upper(), histogram.name.lower())
print >> H, "void grpc_stats_inc_%s(int x);" % histogram.name.lower()
print >> H, "#else"
for ctr in inst_map['Counter']:
print >> H, ("#define GRPC_STATS_INC_%s() ") % (ctr.name.upper())
for histogram in inst_map['Histogram']:
print >> H, "#define GRPC_STATS_INC_%s(value)" % (
histogram.name.upper())
print >> H, "#endif /* defined(GRPC_COLLECT_STATS) || !defined(NDEBUG) */"
for i, tbl in enumerate(static_tables):
print >> H, "extern const %s grpc_stats_table_%d[%d];" % (tbl[0], i,
len(tbl[1]))
print >> H, "extern const int grpc_stats_histo_buckets[%d];" % len(
inst_map['Histogram'])
print >> H, "extern const int grpc_stats_histo_start[%d];" % len(
inst_map['Histogram'])
print >> H, "extern const int *const grpc_stats_histo_bucket_boundaries[%d];" % len(
inst_map['Histogram'])
print >> H, "extern void (*const grpc_stats_inc_histogram[%d])(int x);" % len(
inst_map['Histogram'])
print >> H
print >> H, "#endif /* GRPC_CORE_LIB_DEBUG_STATS_DATA_H */"
with open('src/core/lib/debug/stats_data.cc', 'w') as C:
# copy-paste copyright notice from this file
with open(sys.argv[0]) as my_source:
copyright = []
for line in my_source:
if line[0] != '#': break
for line in my_source:
if line[0] == '#':
copyright.append(line)
break
for line in my_source:
if line[0] != '#':
break
copyright.append(line)
put_banner([C], [line[2:].rstrip() for line in copyright])
put_banner(
[C],
["Automatically generated by tools/codegen/core/gen_stats_data.py"])
print >> C, "#include <grpc/support/port_platform.h>"
print >> C
print >> C, "#include \"src/core/lib/debug/stats.h\""
print >> C, "#include \"src/core/lib/debug/stats_data.h\""
print >> C, "#include \"src/core/lib/gpr/useful.h\""
print >> C, "#include \"src/core/lib/iomgr/exec_ctx.h\""
print >> C
histo_code = []
for histogram in inst_map['Histogram']:
code, bounds_idx = gen_bucket_code(histogram)
histo_bucket_boundaries.append(bounds_idx)
histo_code.append(code)
for typename, instances in sorted(inst_map.items()):
print >> C, "const char *grpc_stats_%s_name[GRPC_STATS_%s_COUNT] = {" % (
typename.lower(), typename.upper())
for inst in instances:
print >> C, " %s," % c_str(inst.name)
print >> C, "};"
print >> C, "const char *grpc_stats_%s_doc[GRPC_STATS_%s_COUNT] = {" % (
typename.lower(), typename.upper())
for inst in instances:
print >> C, " %s," % c_str(inst.doc)
print >> C, "};"
for i, tbl in enumerate(static_tables):
print >> C, "const %s grpc_stats_table_%d[%d] = {%s};" % (
tbl[0], i, len(tbl[1]), ','.join('%s' % x for x in tbl[1]))
for histogram, code in zip(inst_map['Histogram'], histo_code):
print >> C, ("void grpc_stats_inc_%s(int value) {%s}") % (
histogram.name.lower(), code)
print >> C, "const int grpc_stats_histo_buckets[%d] = {%s};" % (
len(inst_map['Histogram']), ','.join('%s' % x for x in histo_buckets))
print >> C, "const int grpc_stats_histo_start[%d] = {%s};" % (
len(inst_map['Histogram']), ','.join('%s' % x for x in histo_start))
print >> C, "const int *const grpc_stats_histo_bucket_boundaries[%d] = {%s};" % (
len(inst_map['Histogram']), ','.join(
'grpc_stats_table_%d' % x for x in histo_bucket_boundaries))
print >> C, "void (*const grpc_stats_inc_histogram[%d])(int x) = {%s};" % (
len(inst_map['Histogram']), ','.join(
'grpc_stats_inc_%s' % histogram.name.lower()
for histogram in inst_map['Histogram']))
# patch qps_test bigquery schema
RECORD_EXPLICIT_PERCENTILES = [50, 95, 99]
with open('tools/run_tests/performance/scenario_result_schema.json', 'r') as f:
qps_schema = json.loads(f.read())
def FindNamed(js, name):
for el in js:
if el['name'] == name:
return el
def RemoveCoreFields(js):
new_fields = []
for field in js['fields']:
if not field['name'].startswith('core_'):
new_fields.append(field)
js['fields'] = new_fields
RemoveCoreFields(FindNamed(qps_schema, 'clientStats'))
RemoveCoreFields(FindNamed(qps_schema, 'serverStats'))
def AddCoreFields(js):
for counter in inst_map['Counter']:
js['fields'].append({
'name': 'core_%s' % counter.name,
'type': 'INTEGER',
'mode': 'NULLABLE'
})
for histogram in inst_map['Histogram']:
js['fields'].append({
'name': 'core_%s' % histogram.name,
'type': 'STRING',
'mode': 'NULLABLE'
})
js['fields'].append({
'name': 'core_%s_bkts' % histogram.name,
'type': 'STRING',
'mode': 'NULLABLE'
})
for pctl in RECORD_EXPLICIT_PERCENTILES:
js['fields'].append({
'name': 'core_%s_%dp' % (histogram.name, pctl),
'type': 'FLOAT',
'mode': 'NULLABLE'
})
AddCoreFields(FindNamed(qps_schema, 'clientStats'))
AddCoreFields(FindNamed(qps_schema, 'serverStats'))
with open('tools/run_tests/performance/scenario_result_schema.json', 'w') as f:
f.write(json.dumps(qps_schema, indent=2, sort_keys=True))
# and generate a helper script to massage scenario results into the format we'd
# like to query
with open('tools/run_tests/performance/massage_qps_stats.py', 'w') as P:
with open(sys.argv[0]) as my_source:
for line in my_source:
if line[0] != '#': break
for line in my_source:
if line[0] == '#':
print >> P, line.rstrip()
break
for line in my_source:
if line[0] != '#':
break
print >> P, line.rstrip()
print >> P
print >> P, '# Autogenerated by tools/codegen/core/gen_stats_data.py'
print >> P
print >> P, 'import massage_qps_stats_helpers'
print >> P, 'def massage_qps_stats(scenario_result):'
print >> P, ' for stats in scenario_result["serverStats"] + scenario_result["clientStats"]:'
print >> P, ' if "coreStats" not in stats: return'
print >> P, ' core_stats = stats["coreStats"]'
print >> P, ' del stats["coreStats"]'
for counter in inst_map['Counter']:
print >> P, ' stats["core_%s"] = massage_qps_stats_helpers.counter(core_stats, "%s")' % (
counter.name, counter.name)
for i, histogram in enumerate(inst_map['Histogram']):
print >> P, ' h = massage_qps_stats_helpers.histogram(core_stats, "%s")' % histogram.name
print >> P, ' stats["core_%s"] = ",".join("%%f" %% x for x in h.buckets)' % histogram.name
print >> P, ' stats["core_%s_bkts"] = ",".join("%%f" %% x for x in h.boundaries)' % histogram.name
for pctl in RECORD_EXPLICIT_PERCENTILES:
print >> P, ' stats["core_%s_%dp"] = massage_qps_stats_helpers.percentile(h.buckets, %d, h.boundaries)' % (
histogram.name, pctl, pctl)
with open('src/core/lib/debug/stats_data_bq_schema.sql', 'w') as S:
columns = []
for counter in inst_map['Counter']:
columns.append(('%s_per_iteration' % counter.name, 'FLOAT'))
print >> S, ',\n'.join('%s:%s' % x for x in columns)
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