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from __future__ import division
import sys
from twisted.python import log
from twisted.internet.defer import Deferred
from twisted.internet.task import cooperate
from twisted.application.app import ReactorSelectionMixin
from twisted.python.usage import Options
PRINT_TEMPL = (
'%(stats)s %(name)s/sec (%(count)s %(name)s in %(duration)s seconds)')
class BenchmarkOptions(Options, ReactorSelectionMixin):
optParameters = [
('iterations', 'n', 1, 'number of iterations', int),
('duration', 'd', 5, 'duration of each iteration', float),
('warmup', 'w', 0, 'number of warmup iterations', int),
('format', 'f',
PRINT_TEMPL,
'format string to use to report the benchmark results '
'(valid keys: name stats count duration)'),
]
class Client(object):
def __init__(self, reactor):
self._reactor = reactor
self._requestCount = 0
def run(self, concurrency, duration):
self._reactor.callLater(duration, self._stop, None)
self._finished = Deferred()
self._finished.addBoth(self._cleanup)
for i in range(concurrency):
self._request()
return self._finished
def cleanup(self):
pass
def _continue(self, ignored):
self._requestCount += 1
if self._finished is not None:
self._request()
def _stop(self, reason):
if self._finished is not None:
finished = self._finished
self._finished = None
if reason is not None:
finished.errback(reason)
else:
finished.callback(self._requestCount)
def _cleanup(self, passthrough):
self.cleanup()
return passthrough
def benchmark_report(acceptCount, duration, name, format):
print format % {
'stats' : acceptCount / duration,
'name' : name,
'count' : acceptCount,
'duration' : duration
}
def perform_benchmark(reactor, duration, iterations, warmup, f):
warmups = cooperate(f(reactor, duration) for i in range(warmup)).whenDone()
warmups.addCallback(lambda ignored: f(reactor, duration))
yield warmups
for i in range(iterations - 1):
yield f(reactor, duration)
def report_benchmark(results, duration, f, reporter, format):
reporting = cooperate(
result.addCallback(reporter, duration, f.__module__, format)
for result in results)
return reporting.whenDone()
class Driver(object):
benchmark_report = staticmethod(benchmark_report)
def driver(self, f, argv):
options = BenchmarkOptions()
options.parseOptions(argv[1:])
from twisted.internet import reactor
duration = options['duration']
iterations = options['iterations']
warmup = options['warmup']
format = options['format']
d = report_benchmark(
perform_benchmark(reactor, duration, iterations, warmup, f),
duration, f, self.benchmark_report, format)
d.addErrback(log.err)
reactor.callWhenRunning(d.addBoth, lambda ign: reactor.stop())
reactor.run()
def multidriver(self, f):
options = BenchmarkOptions()
options.parseOptions(sys.argv[1:])
self.run_jobs(
f, options['duration'], options['iterations'], options['warmup'])
def run_jobs(self, f, duration, iterations, warmup):
from twisted.internet import reactor
def work(job):
d = perform_benchmark(
reactor, duration, iterations, warmup,
job, self.benchmark_report)
d.addErrback(
log.err, "Problem running benchmark %s" % (job.__module__,))
return d
def go():
task = cooperate(work(job) for job in f)
d = task.whenDone()
d.addErrback(log.err, "Problem coordinating benchmarks")
d.addCallback(lambda ignored: reactor.stop())
reactor.callWhenRunning(go)
reactor.run()
_driver = Driver()
driver = _driver.driver
multidriver = _driver.multidriver
del _driver
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