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import base64
import numpy
import os
import psutil
import pytest
import random
import threading
import time
from twisted.internet import threads, reactor
# we have to manually setup the events server in order to be able to signal
# events. This is usually done by the enclosing application using soledad
# client (i.e. bitmask client).
from leap.common.events import server
server.ensure_server()
#
# pytest customizations
#
def pytest_addoption(parser):
parser.addoption(
"--num-docs", type="int", default=100,
help="the number of documents to use in performance tests")
# mark benchmark tests using their group names (thanks ionelmc! :)
def pytest_collection_modifyitems(items):
for item in items:
bench = item.get_marker("benchmark")
if bench and bench.kwargs.get('group'):
group = bench.kwargs['group']
marker = getattr(pytest.mark, 'benchmark_' + group)
item.add_marker(marker)
#
# benchmark fixtures
#
@pytest.fixture()
def payload():
def generate(size):
random.seed(1337) # same seed to avoid different bench results
payload_bytes = bytearray(random.getrandbits(8) for _ in xrange(size))
# encode as base64 to avoid ascii encode/decode errors
return base64.b64encode(payload_bytes)[:size] # remove b64 overhead
return generate
@pytest.fixture()
def txbenchmark(benchmark):
def blockOnThread(*args, **kwargs):
return threads.deferToThread(
benchmark, threads.blockingCallFromThread,
reactor, *args, **kwargs)
return blockOnThread
@pytest.fixture()
def txbenchmark_with_setup(benchmark):
def blockOnThreadWithSetup(setup, f):
def blocking_runner(*args, **kwargs):
return threads.blockingCallFromThread(reactor, f, *args, **kwargs)
def blocking_setup():
args = threads.blockingCallFromThread(reactor, setup)
try:
return tuple(arg for arg in args), {}
except TypeError:
return ((args,), {}) if args else None
def bench():
return benchmark.pedantic(blocking_runner, setup=blocking_setup,
rounds=4, warmup_rounds=1)
return threads.deferToThread(bench)
return blockOnThreadWithSetup
#
# resource monitoring
#
class MemoryWatcher(threading.Thread):
def __init__(self, process, interval):
threading.Thread.__init__(self)
self.process = process
self.interval = interval
self.samples = []
self.running = False
def run(self):
self.running = True
while self.running:
memory = self.process.memory_percent(memtype='rss')
self.samples.append(memory)
time.sleep(self.interval)
def stop(self):
self.running = False
self.join()
def info(self):
info = {
'interval': self.interval,
'samples': self.samples,
'stats': {},
}
for stat in 'max', 'min', 'mean', 'std':
fun = getattr(numpy, stat)
info['stats'][stat] = fun(self.samples)
return info
@pytest.fixture
def monitored_benchmark(benchmark, request):
def _monitored_benchmark(fun, *args, **kwargs):
process = psutil.Process(os.getpid())
memwatch = MemoryWatcher(process, 1)
memwatch.start()
process.cpu_percent()
benchmark.pedantic(
fun, args=args, kwargs=kwargs,
rounds=1, iterations=1, warmup_rounds=0)
memwatch.stop()
# store results
benchmark.extra_info['cpu_percent'] = process.cpu_percent()
benchmark.extra_info['memory_percent'] = memwatch.info()
return _monitored_benchmark
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