架构师系列之 8：python 网站压测工具

使用 request 后的 response 中时间来计算平均相应时间， 95%响应时间：

关于 elapsed 中的时间差解释：https://www.cnblogs.com/landhu/p/5442069.html

class MessageFetcher:    def __init__(self, url, total_number, parallel_number):        self.total_number = total_number        self.parallel_number = parallel_number        self.url = url
    def get_message_data(self):        req_list = []        for i in range(self.parallel_number):            req_list.append(grequests.get(self.url))        elapsed_time_ms_list = []        try:            for batch_number in range(int(self.total_number/self.parallel_number)):                print("Send request in batch: {0}".format(batch_number))                res_list = grequests.map(req_list)                print(res_list)                for res_item in res_list:                    elapsed_time_ms_list.append(res_item.elapsed.microseconds)        except Exception as e:            print(e)        elapsed_time_ms_list.sort()        print(elapsed_time_ms_list)        print(len(elapsed_time_ms_list))        print("95% 响应时间：{0} ms".format(elapsed_time_ms_list[94]/1000))        time_total = 0        for t in elapsed_time_ms_list:            time_total += t        print("平均响应时间：{0} ms".format(time_total / (1000*100)))
if __name__ == "__main__":    MessageFetcher("http://www.baidu.com", 100, 10).get_message_data()

Send request in batch: 0

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

Send request in batch: 1

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

Send request in batch: 2

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

Send request in batch: 3

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

Send request in batch: 4

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

Send request in batch: 5

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

Send request in batch: 6

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

Send request in batch: 7

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

Send request in batch: 8

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

Send request in batch: 9

[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

[17445, 18356, 18615, 18803, 19253, 19296, 19675, 19725, 19932, 19934, 20026, 20185, 20199, 20213, 20268, 20270, 20585, 20595, 20608, 20762, 21015, 21078, 21177, 21217, 21234, 21256, 21259, 21320, 21354, 21383, 21530, 21563, 21635, 21657, 21676, 21724, 21728, 21735, 21755, 21840, 21916, 22060, 22087, 22115, 22218, 22250, 22277, 22380, 22396, 22431, 22465, 22531, 22534, 22661, 22666, 22840, 22873, 22907, 23070, 23105, 23147, 23208, 23240, 23274, 23279, 23332, 23373, 23438, 23634, 23739, 23868, 23979, 24001, 24055, 24129, 24217, 24344, 24364, 24629, 24642, 24686, 24817, 25180, 25306, 25590, 25722, 25774, 25830, 26384, 26487, 26492, 26724, 26767, 26938, 27036, 27431, 27959, 28335, 30206, 31448]

100

95% 响应时间：27.036 ms

平均响应时间：22.84667 ms