现在用python开发服务器代码,因此简单对比了一下其multi-process和multi-thread的CPU利用率

对比图(top命令),结论:python(cpython)由于GIL的存在无法使用threading充分利用CPU资源,如果服务器为多核,请考虑使用multi-process提升性能

多进程( multi-process)

多线程(multi-thread)


源代码

多进程( multi-process)

import multiprocessing

def thread_func(): 
    print "thread in"
    while True:
        pass

if __name__ == "__main__":
    t1 = multiprocessing.Process(target = thread_func)
    t1.start()

    t2 = multiprocessing.Process(target = thread_func)
    t2.start()
    
    t1.join()
    t2.join()

多线程(multi-thread)

from threading import  Thread                                                                                       

def thread_func(): 
    print "thread in"
    while True:
        pass

if __name__ == "__main__":
    t1 = Thread(target = thread_func)
    t1.start()

    t2 = Thread(target = thread_func)
    t2.start()
    
    t1.join()
    t2.join()


posted on 2013-05-14 13:55  #hanhui  阅读(765)  评论(0)    收藏  举报