diff options
Diffstat (limited to 'tools/profiling/microbenchmarks/bm_diff.py')
| -rwxr-xr-x | tools/profiling/microbenchmarks/bm_diff.py | 152 |
1 files changed, 77 insertions, 75 deletions
diff --git a/tools/profiling/microbenchmarks/bm_diff.py b/tools/profiling/microbenchmarks/bm_diff.py index 35a79593b4..ba0c225f6c 100755 --- a/tools/profiling/microbenchmarks/bm_diff.py +++ b/tools/profiling/microbenchmarks/bm_diff.py @@ -41,6 +41,22 @@ import pipes import os sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), '..', '..', 'run_tests', 'python_utils')) import comment_on_pr +import jobset +import itertools +import speedup +import random +import shutil +import errno + +_INTERESTING = ( + 'cpu_time', + 'real_time', + 'locks_per_iteration', + 'allocs_per_iteration', + 'writes_per_iteration', + 'atm_cas_per_iteration', + 'atm_add_per_iteration', +) def changed_ratio(n, o): if float(o) <= .0001: o = 0 @@ -60,26 +76,6 @@ def median(ary): def min_change(pct): return lambda n, o: abs(changed_ratio(n,o)) > pct/100.0 -nanos = { - 'abs_diff': 5, - 'pct_diff': 10, -} -counter = { - 'abs_diff': 0.5, - 'pct_diff': 10, -} - -_INTERESTING = { - 'cpu_time': nanos, - 'real_time': nanos, - 'locks_per_iteration': counter, - 'allocs_per_iteration': counter, - 'writes_per_iteration': counter, - 'atm_cas_per_iteration': counter, - 'atm_add_per_iteration': counter, -} - - _AVAILABLE_BENCHMARK_TESTS = ['bm_fullstack_unary_ping_pong', 'bm_fullstack_streaming_ping_pong', 'bm_fullstack_streaming_pump', @@ -95,14 +91,15 @@ _AVAILABLE_BENCHMARK_TESTS = ['bm_fullstack_unary_ping_pong', argp = argparse.ArgumentParser(description='Perform diff on microbenchmarks') argp.add_argument('-t', '--track', - choices=sorted(_INTERESTING.keys()), + choices=sorted(_INTERESTING), nargs='+', - default=sorted(_INTERESTING.keys()), + default=sorted(_INTERESTING), help='Which metrics to track') argp.add_argument('-b', '--benchmarks', nargs='+', choices=_AVAILABLE_BENCHMARK_TESTS, default=['bm_cq']) argp.add_argument('-d', '--diff_base', type=str) -argp.add_argument('-r', '--repetitions', type=int, default=4) -argp.add_argument('-p', '--p_threshold', type=float, default=0.01) +argp.add_argument('-r', '--repetitions', type=int, default=1) +argp.add_argument('-l', '--loops', type=int, default=12) +argp.add_argument('-j', '--jobs', type=int, default=multiprocessing.cpu_count()) args = argp.parse_args() assert args.diff_base @@ -117,9 +114,10 @@ def avg(lst): def make_cmd(cfg): return ['make'] + args.benchmarks + [ - 'CONFIG=%s' % cfg, '-j', '%d' % multiprocessing.cpu_count()] + 'CONFIG=%s' % cfg, '-j', '%d' % args.jobs] -def build(): +def build(dest): + shutil.rmtree('bm_diff_%s' % dest, ignore_errors=True) subprocess.check_call(['git', 'submodule', 'update']) try: subprocess.check_call(make_cmd('opt')) @@ -128,38 +126,38 @@ def build(): subprocess.check_call(['make', 'clean']) subprocess.check_call(make_cmd('opt')) subprocess.check_call(make_cmd('counters')) + os.rename('bins', 'bm_diff_%s' % dest) -def collect1(bm, cfg, ver): - cmd = ['bins/%s/%s' % (cfg, bm), - '--benchmark_out=%s.%s.%s.json' % (bm, cfg, ver), +def collect1(bm, cfg, ver, idx): + cmd = ['bm_diff_%s/%s/%s' % (ver, cfg, bm), + '--benchmark_out=%s.%s.%s.%d.json' % (bm, cfg, ver, idx), '--benchmark_out_format=json', '--benchmark_repetitions=%d' % (args.repetitions) ] - print cmd - subprocess.check_call(cmd) + return jobset.JobSpec(cmd, shortname='%s %s %s %d/%d' % (bm, cfg, ver, idx+1, args.loops), + verbose_success=True, timeout_seconds=None) -build() -for bm in args.benchmarks: - collect1(bm, 'opt', 'new') - collect1(bm, 'counters', 'new') +build('new') where_am_i = subprocess.check_output(['git', 'rev-parse', '--abbrev-ref', 'HEAD']).strip() subprocess.check_call(['git', 'checkout', args.diff_base]) - try: - build() - comparables = [] - for bm in args.benchmarks: - try: - collect1(bm, 'opt', 'old') - collect1(bm, 'counters', 'old') - comparables.append(bm) - except subprocess.CalledProcessError, e: - pass + build('old') finally: subprocess.check_call(['git', 'checkout', where_am_i]) subprocess.check_call(['git', 'submodule', 'update']) +jobs = [] +for loop in range(0, args.loops): + jobs.extend(x for x in itertools.chain( + (collect1(bm, 'opt', 'new', loop) for bm in args.benchmarks), + (collect1(bm, 'counters', 'new', loop) for bm in args.benchmarks), + (collect1(bm, 'opt', 'old', loop) for bm in args.benchmarks), + (collect1(bm, 'counters', 'old', loop) for bm in args.benchmarks), + )) +random.shuffle(jobs, random.SystemRandom().random) + +jobset.run(jobs, maxjobs=args.jobs) class Benchmark: @@ -180,16 +178,11 @@ class Benchmark: new = self.samples[True][f] old = self.samples[False][f] if not new or not old: continue - p = stats.ttest_ind(new, old)[1] - new_mdn = median(new) - old_mdn = median(old) - delta = new_mdn - old_mdn - ratio = changed_ratio(new_mdn, old_mdn) - print '%s: new=%r old=%r new_mdn=%f old_mdn=%f delta=%f(%f:%f) ratio=%f(%f:%f) p=%f' % ( - f, new, old, new_mdn, old_mdn, delta, abs(delta), _INTERESTING[f]['abs_diff'], ratio, abs(ratio), _INTERESTING[f]['pct_diff']/100.0, p - ) - if p < args.p_threshold and abs(delta) > _INTERESTING[f]['abs_diff'] and abs(ratio) > _INTERESTING[f]['pct_diff']/100.0: - self.final[f] = delta + mdn_diff = abs(median(new) - median(old)) + print '%s: new=%r old=%r mdn_diff=%r' % (f, new, old, mdn_diff) + s = speedup.speedup(new, old) + if abs(s) > 3 and mdn_diff > 0.5: + self.final[f] = '%+d%%' % s return self.final.keys() def skip(self): @@ -199,28 +192,37 @@ class Benchmark: return [self.final[f] if f in self.final else '' for f in flds] +def read_file(filename): + while True: + try: + with open(filename) as f: + return f.read() + except IOError, e: + if e.errno != errno.EINTR: + raise + +def read_json(filename): + return json.loads(read_file(filename)) + benchmarks = collections.defaultdict(Benchmark) -for bm in comparables: - with open('%s.counters.new.json' % bm) as f: - js_new_ctr = json.loads(f.read()) - with open('%s.opt.new.json' % bm) as f: - js_new_opt = json.loads(f.read()) - with open('%s.counters.old.json' % bm) as f: - js_old_ctr = json.loads(f.read()) - with open('%s.opt.old.json' % bm) as f: - js_old_opt = json.loads(f.read()) - - for row in bm_json.expand_json(js_new_ctr, js_new_opt): - print row - name = row['cpp_name'] - if name.endswith('_mean') or name.endswith('_stddev'): continue - benchmarks[name].add_sample(row, True) - for row in bm_json.expand_json(js_old_ctr, js_old_opt): - print row - name = row['cpp_name'] - if name.endswith('_mean') or name.endswith('_stddev'): continue - benchmarks[name].add_sample(row, False) +for bm in args.benchmarks: + for loop in range(0, args.loops): + js_new_ctr = read_json('%s.counters.new.%d.json' % (bm, loop)) + js_new_opt = read_json('%s.opt.new.%d.json' % (bm, loop)) + js_old_ctr = read_json('%s.counters.old.%d.json' % (bm, loop)) + js_old_opt = read_json('%s.opt.old.%d.json' % (bm, loop)) + + for row in bm_json.expand_json(js_new_ctr, js_new_opt): + print row + name = row['cpp_name'] + if name.endswith('_mean') or name.endswith('_stddev'): continue + benchmarks[name].add_sample(row, True) + for row in bm_json.expand_json(js_old_ctr, js_old_opt): + print row + name = row['cpp_name'] + if name.endswith('_mean') or name.endswith('_stddev'): continue + benchmarks[name].add_sample(row, False) really_interesting = set() for name, bm in benchmarks.items(): |