最近，把自己的博客域名，从切换成了，并把博客老域名映射到了新域名，于是想看下访问两个域名的耗时。

下面自己用Python写了一段小脚本，用于记录每次访问耗时以及平均耗时，主要用到了Python的装饰器，命令行传参，urllib2抓取网页等小知识。

示例代码： mimvp_costtime.py

#!/usr/bin/env python
# -*- coding:utf-8 -*-
#
# Copyright 2015 mimvp.com

'''
对比访问N次我的博客，比较域名切换后的访问时间
新博客： https://blog.mimvp.com
老博客： http://blog.ithomer.net
'''

import time
import urllib2
import functools

import sys
reload(sys)
sys.setdefaultencoding('utf8')


DOWN_NUM = 10   # 默认比较次数，通过命令行可以传参

mimvp_NEW = 'https://blog.mimvp.com'
mimvp_OLD = 'http://blog.ithomer.net'


def timefunc(func):
    @functools.wraps(func)
    def __do__(*args, **kwargs):
        start = time.time()
        func(*args, **kwargs)
        costtime = time.time() - start
#         print('%s \t %s \t costtime: %ss' % (str(args[1]), func.__name__, costtime))
        return costtime
    return __do__

@timefunc
def down(url, mimvp_type='mimvp_new'):
    try:
        req = urllib2.Request(url)
        content = urllib2.urlopen(req, timeout=30).read()
#         print("%s \t url: %s \t content len: %d" % (mimvp_type, url, len(content)))
    except Exception, ex:
        print("main() -- error_msg: %s" % (str(ex),))


def main(down_num = DOWN_NUM):
    mimvp_old_costtime = 0.0
    mimvp_new_costtime = 0.0
    
    for i in xrange(down_num):
        result_old = down(mimvp_OLD, 'mimvp_old')
        result_new = down(mimvp_NEW, 'mimvp_new')
        print('down_%d \t\t url: %s \t costtime: %f' % (i, mimvp_OLD, result_old))
        print('down_%d \t\t url: %s \t costtime: %f' % (i, mimvp_NEW, result_new))
        
        mimvp_old_costtime += result_old
        mimvp_new_costtime += result_new
    
    mimvp_old_avg = mimvp_old_costtime / down_num
    mimvp_new_avg = mimvp_new_costtime / down_num
    print('down_num: %d \t\t url: %s \t costtime_avg: %f' % (down_num, mimvp_OLD, mimvp_old_avg))
    print('down_num: %d \t\t url: %s \t costtime_avg: %f' % (down_num, mimvp_NEW, mimvp_new_avg))
    

if __name__ == "__main__":
    # 获取比较次数参数，例如：python  mimvp_costtime.py  5
    down_num = int(sys.argv[1]) if len(sys.argv) > 1 else DOWN_NUM 
    print 'down_num: ', down_num
    
    main(down_num)
    print("end.")

运行结果：

homer@ubuntu:~/$ python mimvp_costtime.py  5
down_num:  5
down_0          url: http://blog.ithomer.net      costtime: 0.444852
down_0          url: https://blog.mimvp.com      costtime: 0.783525
down_1          url: http://blog.ithomer.net      costtime: 1.197499
down_1          url: https://blog.mimvp.com      costtime: 0.877678
down_2          url: http://blog.ithomer.net      costtime: 0.635510
down_2          url: https://blog.mimvp.com      costtime: 0.470353
down_3          url: http://blog.ithomer.net      costtime: 1.234132
down_3          url: https://blog.mimvp.com      costtime: 0.911674
down_4          url: http://blog.ithomer.net      costtime: 3.554443
down_4          url: https://blog.mimvp.com      costtime: 1.306112
down_num: 5          url: http://blog.ithomer.net      costtime_avg: 1.413287
down_num: 5          url: https://blog.mimvp.com      costtime_avg: 0.869868