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zhanghe06zhanghe06
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并发性能测试
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‎cores.py‎

Lines changed: 130 additions & 3 deletions
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# encoding: utf-8
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__author__ = 'zhanghe'
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from multiprocessing import Pool
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# from multiprocessing import Pool
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from multiprocessing.dummy import Pool
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import gevent
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import os
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import time
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import random
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from tools import time_log
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from gevent import monkey
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monkey.patch_all()
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def long_time_task(name):
@@ -15,12 +20,14 @@ def long_time_task(name):
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"""
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print 'Run task %s (%s)...' % (name, os.getpid())
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start = time.time()
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time.sleep(random.random() * 3)
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# time.sleep(random.random() * 3)
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time.sleep(0.3)
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end = time.time()
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print 'Task %s runs %0.2f seconds.' % (name, (end - start))
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if __name__ == '__main__':
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@time_log.time_log
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def run():
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print 'Parent process %s.' % os.getpid()
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p = Pool()
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for i in range(9):
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print 'All sub processes done.'
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@time_log.time_log
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def run_gevent():
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threads = [gevent.spawn(long_time_task, i) for i in range(9)]
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gevent.joinall(threads)
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if __name__ == '__main__':
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# run()
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run_gevent()
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# 这是一个多进程的例子，同时运行的进程数与机器的核心数是对应的
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# 根据任务池同时运行的进程数也可以看出当前cpu的核心数，运行结果：
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# 可以看出进程池子最多有4个进程
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# cpu cores : 4
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# cpuid level : 13
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# zhanghe@ubuntu:~$
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# from multiprocessing import Pool
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# time.sleep(0.3)
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# 方法run开始时间：Thu Apr 30 00:48:04 2015
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# Parent process 17113.
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# Waiting for all sub processes done...
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# Run task 1 (17115)...
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# Run task 0 (17114)...
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# Task 1 runs 0.30 seconds.
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# Run task 2 (17115)...
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# Task 0 runs 0.30 seconds.
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# Run task 3 (17114)...
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# Task 2 runs 0.30 seconds.
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# Run task 4 (17115)...
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# Task 3 runs 0.30 seconds.
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# Run task 5 (17114)...
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# Task 4 runs 0.30 seconds.
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# Run task 6 (17115)...
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# Task 5 runs 0.30 seconds.
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# Run task 7 (17114)...
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# Task 6 runs 0.30 seconds.
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# Run task 8 (17115)...
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# Task 7 runs 0.30 seconds.
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# Task 8 runs 0.30 seconds.
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# All sub processes done.
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# 方法run结束时间：Thu Apr 30 00:48:05 2015
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# 方法run运行时间：1.72S
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# from multiprocessing.dummy import Pool
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# time.sleep(0.3)
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# 方法run开始时间：Thu Apr 30 00:51:27 2015
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# Parent process 17244.
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# Waiting for all sub processes done...
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# Run task 0 (17244)...
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# Run task 1 (17244)...
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# Task 0 runs 0.30 seconds.
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# Task 1 runs 0.30 seconds.Run task 2 (17244)...
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#
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# Run task 3 (17244)...
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# Task 2 runs 0.30 seconds.Task 3 runs 0.30 seconds.
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# Run task 4 (17244)...
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#
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# Run task 5 (17244)...
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# Task 4 runs 0.30 seconds.
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# Task 5 runs 0.30 seconds.Run task 6 (17244)...
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#
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# Run task 7 (17244)...
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# Task 6 runs 0.30 seconds.
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# Run task 8 (17244)...
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# Task 7 runs 0.30 seconds.
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# Task 8 runs 0.30 seconds.
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# All sub processes done.
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# 方法run结束时间：Thu Apr 30 00:51:29 2015
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# 方法run运行时间：1.54S
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# import gevent
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# time.sleep(0.3)
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# 方法run_gevent开始时间：Thu Apr 30 01:13:52 2015
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# Run task 0 (17964)...
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# Task 0 runs 0.30 seconds.
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# Run task 1 (17964)...
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# Task 1 runs 0.30 seconds.
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# Run task 2 (17964)...
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# Task 2 runs 0.30 seconds.
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# Run task 3 (17964)...
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# Task 3 runs 0.30 seconds.
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# Run task 4 (17964)...
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# Task 4 runs 0.30 seconds.
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# Run task 5 (17964)...
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# Task 5 runs 0.30 seconds.
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# Run task 6 (17964)...
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# Task 6 runs 0.30 seconds.
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# Run task 7 (17964)...
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# Task 7 runs 0.30 seconds.
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# Run task 8 (17964)...
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# Task 8 runs 0.30 seconds.
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# 方法run_gevent结束时间：Thu Apr 30 01:13:55 2015
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# 方法run_gevent运行时间：2.74S
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# import gevent
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# time.sleep(0.3)
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# from gevent import monkey
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# monkey.patch_all()
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# 方法run_gevent开始时间：Thu Apr 30 01:17:05 2015
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# Run task 0 (18038)...
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# Run task 1 (18038)...
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# Run task 2 (18038)...
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# Run task 3 (18038)...
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# Run task 4 (18038)...
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# Run task 5 (18038)...
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# Run task 6 (18038)...
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# Run task 7 (18038)...
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# Run task 8 (18038)...
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# Task 0 runs 0.30 seconds.
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# Task 1 runs 0.30 seconds.
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# Task 2 runs 0.30 seconds.
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# Task 3 runs 0.30 seconds.
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# Task 4 runs 0.30 seconds.
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# Task 5 runs 0.30 seconds.
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# Task 6 runs 0.30 seconds.
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# Task 7 runs 0.30 seconds.
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# Task 8 runs 0.30 seconds.
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# 方法run_gevent结束时间：Thu Apr 30 01:17:05 2015
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# 方法run_gevent运行时间：0.32S
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# 结果可以看出使用multiprocessing.dummy模块比multiprocessing速度略有提升
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# 使用打补丁后的gevent，效率最快

gevent.py renamed to gevent_test.py

File renamed without changes.

‎performance_testing.py‎

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# encoding: utf-8
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__author__ = 'zhanghe'
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import urllib2
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from multiprocessing.dummy import Pool as ThreadPool
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from tools import time_log
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urls = [
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'http://www.python.org',
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'http://www.python.org/about/',
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'http://www.onlamp.com/pub/a/python/2003/04/17/metaclasses.html',
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'http://www.python.org/doc/',
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'http://www.python.org/download/',
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'http://www.python.org/getit/',
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'http://www.python.org/community/',
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'https://wiki.python.org/moin/',
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'http://planet.python.org/',
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'https://wiki.python.org/moin/LocalUserGroups',
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'http://www.python.org/psf/',
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'http://docs.python.org/devguide/',
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'http://www.python.org/community/awards/'
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# etc..
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]
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@time_log.time_log
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def work(num=2):
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# Make the Pool of workers
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pool = ThreadPool(num)
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# Open the urls in their own threads
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# and return the results
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results = pool.map(urllib2.urlopen, urls)
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# close the pool and wait for the work to finish
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pool.close()
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pool.join()
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@time_log.time_log
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def work2(num=2):
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p = ThreadPool(num)
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for i in urls:
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p.apply_async(urllib2.urlopen, args=(i,))
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p.close()
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p.join()
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if __name__ == '__main__':
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work(1)
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work(2)
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work(4)
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work(8)
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work2(1)
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work2(2)
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work2(4)
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work2(8)
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# 测试结果：
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# 方法work开始时间：Thu Apr 30 00:26:21 2015
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# 方法work结束时间：Thu Apr 30 00:26:46 2015
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# 方法work运行时间：25.28S
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# 方法work开始时间：Thu Apr 30 00:26:46 2015
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# 方法work结束时间：Thu Apr 30 00:27:04 2015
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# 方法work运行时间：18.25S
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# 方法work开始时间：Thu Apr 30 00:27:04 2015
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# 方法work结束时间：Thu Apr 30 00:27:10 2015
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# 方法work运行时间：5.47S
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# 方法work开始时间：Thu Apr 30 00:27:10 2015
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# 方法work结束时间：Thu Apr 30 00:27:15 2015
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# 方法work运行时间：5.16S
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# 方法work2开始时间：Thu Apr 30 00:33:56 2015
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# 方法work2结束时间：Thu Apr 30 00:34:24 2015
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# 方法work2运行时间：27.42S
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# 方法work2开始时间：Thu Apr 30 00:34:24 2015
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# 方法work2结束时间：Thu Apr 30 00:34:35 2015
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# 方法work2运行时间：11.62S
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# 方法work2开始时间：Thu Apr 30 00:34:35 2015
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# 方法work2结束时间：Thu Apr 30 00:34:42 2015
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# 方法work2运行时间：6.87S
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# 方法work2开始时间：Thu Apr 30 00:34:42 2015
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# 方法work2结束时间：Thu Apr 30 00:34:53 2015
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# 方法work2运行时间：11.10S

‎performance_testing_2.py‎

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# encoding: utf-8
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__author__ = 'zhanghe'
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import os
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from PIL import Image
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SIZE = (75, 75)
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SAVE_DIRECTORY = 'thumbs'
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def get_image_paths(folder):
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return (os.path.join(folder, f)
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for f in os.listdir(folder)
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if 'jpeg' in f)
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def create_thumbnail(filename):
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im = Image.open(filename)
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im.thumbnail(SIZE, Image.ANTIALIAS)
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base, fname = os.path.split(filename)
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save_path = os.path.join(base, SAVE_DIRECTORY, fname)
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im.save(save_path)
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if __name__ == '__main__':
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img_folder = os.path.abspath(
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'11_18_2013_R000_IQM_Big_Sur_Mon__e10d1958e7b766c3e840')
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os.mkdir(os.path.join(img_folder, SAVE_DIRECTORY))
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images = get_image_paths(img_folder)
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for image in images:
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create_thumbnail(Image)

‎performance_testing_3.py‎

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# encoding: utf-8
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__author__ = 'zhanghe'
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import os
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from multiprocessing import Pool
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from PIL import Image
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SIZE = (75, 75)
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SAVE_DIRECTORY = 'thumbs'
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def get_image_paths(folder):
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return (os.path.join(folder, f)
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for f in os.listdir(folder)
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if 'jpeg' in f)
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def create_thumbnail(filename):
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im = Image.open(filename)
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im.thumbnail(SIZE, Image.ANTIALIAS)
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base, fname = os.path.split(filename)
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save_path = os.path.join(base, SAVE_DIRECTORY, fname)
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im.save(save_path)
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if __name__ == '__main__':
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img_folder = os.path.abspath(
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'11_18_2013_R000_IQM_Big_Sur_Mon__e10d1958e7b766c3e840')
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os.mkdir(os.path.join(img_folder, SAVE_DIRECTORY))
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images = get_image_paths(img_folder)
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pool = Pool()
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pool.map(create_thumbnail, images)
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pool.close()
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pool.join()

‎tools/time_log.pyc‎

1.99 KB
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