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"""
Benchmarking spawn() performance.
"""
from __future__ import print_function
from __future__ import absolute_import
from __future__ import division
from pyperf import perf_counter
from pyperf import Runner
try:
xrange
except NameError:
xrange = range
N = 10000
counter = 0
def incr(**_kwargs):
global counter
counter += 1
def noop(_p):
pass
class Options(object):
# TODO: Add back an argument for that
eventlet_hub = None
loops = None
def __init__(self, sleep, join, **kwargs):
self.kwargs = kwargs
self.sleep = sleep
self.join = join
class Times(object):
def __init__(self,
spawn_duration,
sleep_duration=-1,
join_duration=-1):
self.spawn_duration = spawn_duration
self.sleep_duration = sleep_duration
self.join_duration = join_duration
def _test(spawn, sleep, options):
global counter
counter = 0
before_spawn = perf_counter()
for _ in xrange(N):
spawn(incr, **options.kwargs)
spawn_duration = perf_counter() - before_spawn
if options.sleep:
assert counter == 0, counter
before_sleep = perf_counter()
sleep(0)
sleep_duration = perf_counter() - before_sleep
assert counter == N, (counter, N)
else:
sleep_duration = -1
if options.join:
before_join = perf_counter()
options.join()
join_duration = perf_counter() - before_join
else:
join_duration = -1
return Times(spawn_duration,
sleep_duration,
join_duration)
def test(spawn, sleep, options):
all_times = [
_test(spawn, sleep, options)
for _ in xrange(options.loops)
]
spawn_duration = sum(x.spawn_duration for x in all_times)
sleep_duration = sum(x.sleep_duration for x in all_times)
join_duration = sum(x.sleep_duration for x in all_times
if x != -1)
return Times(spawn_duration, sleep_duration, join_duration)
def bench_none(options):
from time import sleep
options.sleep = False
def spawn(f, **kwargs):
return f(**kwargs)
return test(spawn,
sleep,
options)
def bench_gevent(options):
from gevent import spawn, sleep
return test(spawn, sleep, options)
def bench_geventraw(options):
from gevent import sleep, spawn_raw
return test(spawn_raw, sleep, options)
def bench_geventpool(options):
from gevent import sleep
from gevent.pool import Pool
p = Pool()
if options.join:
options.join = p.join
times = test(p.spawn, sleep, options)
return times
try:
__import__('eventlet')
except ImportError:
pass
else:
def bench_eventlet(options):
from eventlet import spawn, sleep
if options.eventlet_hub is not None:
from eventlet.hubs import use_hub
use_hub(options.eventlet_hub)
return test(spawn, sleep, options)
def all():
result = [x for x in globals() if x.startswith('bench_') and x != 'bench_all']
result.sort()
result = [x.replace('bench_', '') for x in result]
return result
def main(argv=None):
import os
import sys
if argv is None:
argv = sys.argv[1:]
env_options = [
'--inherit-environ',
','.join([k for k in os.environ
if k.startswith(('GEVENT',
'PYTHON',
'ZS', # experimental zodbshootout config
'RS', # relstorage config
'COVERAGE'))])]
# This is a default, so put it early
argv[0:0] = env_options
def worker_cmd(cmd, args):
cmd.extend(args.benchmark)
runner = Runner(add_cmdline_args=worker_cmd)
runner.argparser.add_argument('benchmark',
nargs='*',
default='all',
choices=all() + ['all'])
def spawn_time(loops, func, options):
options.loops = loops
times = func(options)
return times.spawn_duration
def sleep_time(loops, func, options):
options.loops = loops
times = func(options)
return times.sleep_duration
def join_time(loops, func, options):
options.loops = loops
times = func(options)
return times.join_duration
args = runner.parse_args(argv)
if 'all' in args.benchmark or args.benchmark == 'all':
args.benchmark = ['all']
names = all()
else:
names = args.benchmark
names = sorted(set(names))
for name in names:
runner.bench_time_func(name + ' spawn',
spawn_time,
globals()['bench_' + name],
Options(sleep=False, join=False),
inner_loops=N)
if name != 'none':
runner.bench_time_func(name + ' sleep',
sleep_time,
globals()['bench_' + name],
Options(sleep=True, join=False),
inner_loops=N)
if 'geventpool' in names:
runner.bench_time_func('geventpool join',
join_time,
bench_geventpool,
Options(sleep=True, join=True),
inner_loops=N)
for name in names:
runner.bench_time_func(name + ' spawn kwarg',
spawn_time,
globals()['bench_' + name],
Options(sleep=False, join=False, foo=1, bar='hello'),
inner_loops=N)
if __name__ == '__main__':
main()
|
