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#!/usr/bin/env python
# coding: utf-8
# Copyright (C) PyZMQ Developers
# Distributed under the terms of the Modified BSD License.
#
# Some original test code Copyright (c) 2007-2010 iMatix Corporation,
# Used under LGPLv3
import argparse
import time
from multiprocessing import Process
import zmq
def parse_args(argv=None):
parser = argparse.ArgumentParser(description='Run a zmq performance test')
parser.add_argument('-p', '--poll', action='store_true',
help='use a zmq Poller instead of raw send/recv')
parser.add_argument('-c', '--copy', action='store_true',
help='copy messages instead of using zero-copy')
parser.add_argument('-s', '--size', type=int, default=10240,
help='size (in bytes) of the test message')
parser.add_argument('-n', '--count', type=int, default=10240,
help='number of test messages to send')
parser.add_argument('--url', dest='url', type=str, default='tcp://127.0.0.1:5555',
help='the zmq URL on which to run the test')
parser.add_argument(dest='test', type=str, default='lat', choices=['lat', 'thr'],
help='which test to run')
return parser.parse_args(argv)
def latency_echo(url, count, poll, copy):
"""echo messages on a REP socket
Should be started before `latency`
"""
ctx = zmq.Context()
s = ctx.socket(zmq.REP)
if poll:
p = zmq.Poller()
p.register(s)
s.bind(url)
block = zmq.NOBLOCK if poll else 0
for i in range(count):
if poll:
res = p.poll()
msg = s.recv(block, copy=copy)
if poll:
res = p.poll()
s.send(msg, block, copy=copy)
msg = s.recv()
assert msg == b'done'
s.close()
ctx.term()
def latency(url, count, size, poll, copy):
"""Perform a latency test"""
ctx = zmq.Context()
s = ctx.socket(zmq.REQ)
s.setsockopt(zmq.LINGER, -1)
s.connect(url)
if poll:
p = zmq.Poller()
p.register(s)
msg = b' ' * size
watch = zmq.Stopwatch()
block = zmq.NOBLOCK if poll else 0
time.sleep(1)
watch.start()
for i in range (0, count):
if poll:
res = p.poll()
assert(res[0][1] & zmq.POLLOUT)
s.send(msg, block, copy=copy)
if poll:
res = p.poll()
assert(res[0][1] & zmq.POLLIN)
msg = s.recv(block, copy=copy)
assert len(msg) == size
elapsed = watch.stop()
s.send(b'done')
latency = elapsed / (count * 2.)
print ("message size : %8i [B]" % (size, ))
print ("roundtrip count: %8i [msgs]" % (count, ))
print ("mean latency : %12.3f [µs]" % (latency, ))
print ("test time : %12.3f [s]" % (elapsed * 1e-6, ))
def pusher(url, count, size, copy, poll):
"""send a bunch of messages on a PUSH socket"""
ctx = zmq.Context()
s = ctx.socket(zmq.PUSH)
# Add your socket options here.
# For example ZMQ_RATE, ZMQ_RECOVERY_IVL and ZMQ_MCAST_LOOP for PGM.
if poll:
p = zmq.Poller()
p.register(s)
s.connect(url)
msg = zmq.Message(b' ' * size)
block = zmq.NOBLOCK if poll else 0
for i in range(count):
if poll:
res = p.poll()
assert(res[0][1] & zmq.POLLOUT)
s.send(msg, block, copy=copy)
s.close()
ctx.term()
def throughput(url, count, size, poll, copy):
"""recv a bunch of messages on a PULL socket
Should be started before `pusher`
"""
ctx = zmq.Context()
s = ctx.socket(zmq.PULL)
# Add your socket options here.
# For example ZMQ_RATE, ZMQ_RECOVERY_IVL and ZMQ_MCAST_LOOP for PGM.
if poll:
p = zmq.Poller()
p.register(s)
s.bind(url)
watch = zmq.Stopwatch()
block = zmq.NOBLOCK if poll else 0
# Wait for the other side to connect.
msg = s.recv()
assert len (msg) == size
watch.start()
for i in range (count-1):
if poll:
res = p.poll()
msg = s.recv(block, copy=copy)
elapsed = watch.stop()
if elapsed == 0:
elapsed = 1
throughput = (1e6 * float(count)) / float(elapsed)
megabits = float(throughput * size * 8) / 1e6
print ("message size : %8i [B]" % (size, ))
print ("message count : %8i [msgs]" % (count, ))
print ("mean throughput: %8.0f [msg/s]" % (throughput, ))
print ("mean throughput: %12.3f [Mb/s]" % (megabits, ))
print ("test time : %12.3f [s]" % (elapsed * 1e-6, ))
def main():
args = parse_args()
tic = time.time()
if args.test == 'lat':
bg = Process(target=latency_echo, args=(args.url, args.count, args.poll, args.copy))
bg.start()
latency(args.url, args.count, args.size, args.poll, args.copy)
elif args.test == 'thr':
bg = Process(target=throughput, args=(args.url, args.count, args.size, args.poll, args.copy))
bg.start()
pusher(args.url, args.count, args.size, args.poll, args.copy)
bg.join()
toc = time.time()
if (toc - tic) < 3:
print ("For best results, tests should take at least a few seconds.")
if __name__ == '__main__':
main()
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