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gevent_test.py
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# coding:utf-8
__author__ = 'zhanghe'
import gevent
import random
import time
# from gevent import monkey
# monkey.patch_all()
def task(pid):
gevent.sleep(random.randint(0, 2)*0.001) # 模拟真实环境,等待时间随机,同步:0.183,顺序执行;异步:0.012,随机执行。
# gevent.sleep(0.1) # 如果等待时间固定,同步:10秒,顺序执行;异步:0.1秒多,表现为顺序执行。
print('Task', pid, 'done')
def synchronous(): # 同步
# for i in range(1,100):
for i in xrange(100):
task(i)
def asynchronous(): # 异步
threads = [gevent.spawn(task, i) for i in xrange(100)]
gevent.joinall(threads)
print('Synchronous:')
start = time.time()
synchronous()
stop = time.time()
print stop-start
print('Asynchronous:')
start = time.time()
asynchronous()
stop = time.time()
print stop-start
# 测试结果:
# gevent.sleep(0.1) 第一次
# 猴子补丁,同步:10.141;异步0.111
# 没有补丁,同步:10.148;异步0.126
# gevent.sleep(0.1) 第二次
# 猴子补丁,同步:10.241;异步0.112
# 没有补丁,同步:10.130;异步0.113
# gevent.sleep(random.randint(0,2)*0.001) 第一次
# 猴子补丁,同步:0.214;异步0.013
# 没有补丁,同步:0.182;异步0.015
# gevent.sleep(random.randint(0,2)*0.001) 第二次
# 猴子补丁,同步:0.176;异步0.016
# 没有补丁,同步:0.183;异步0.011