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#!/usr/bin/env python3
#
# 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.
""" Runs the entire bm_*.py pipeline, and possible comments on the PR """
import argparse
import multiprocessing
import os
import random
import subprocess
import sys
sys.path.append(
os.path.join(os.path.dirname(sys.argv[0]), '..', '..', 'run_tests',
'python_utils'))
sys.path.append(
os.path.join(os.path.dirname(sys.argv[0]), '..', '..', '..', 'run_tests',
'python_utils'))
import bm_build
import bm_constants
import bm_diff
import bm_run
import check_on_pr
import jobset
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. Usually just called "old"')
argp.add_argument('-r',
'--regex',
type=str,
default="",
help='Regex to filter benchmarks run')
argp.add_argument(
'-l',
'--loops',
type=int,
default=10,
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')
argp.add_argument('--pr_comment_name',
type=str,
default="microbenchmarks",
help='Name that Jenkins will use to comment on the PR')
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 as 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'])
jobs_list = []
jobs_list += bm_run.create_jobs('new', args.benchmarks, args.loops,
args.regex)
jobs_list += bm_run.create_jobs(old, args.benchmarks, args.loops,
args.regex)
# shuffle all jobs to eliminate noise from GCE CPU drift
random.shuffle(jobs_list, random.SystemRandom().random)
jobset.run(jobs_list, maxjobs=args.jobs)
diff, note, significance = bm_diff.diff(args.benchmarks, args.loops,
args.regex, args.track, old, 'new')
if diff:
text = '[%s] Performance differences noted:\n%s' % (
args.pr_comment_name, diff)
else:
text = '[%s] No significant performance differences' % args.pr_comment_name
if note:
text = note + '\n\n' + text
print('%s' % text)
check_on_pr.check_on_pr('Benchmark', '```\n%s\n```' % text)
if __name__ == '__main__':
args = _args()
main(args)
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