HTTP性能测试（apache ab）

使用Apache ab 做网站的性能测试，下边是测试结果分析：
安装Apache ab 后，可以在CMD输入ab -n1000 -c10 http://101.200../来测试想要测试的站点。

D:\Program Files (x86)\apache ab>ab -n1000 -c10 http://101.200.*.*/This is ApacheBench, Version 2.3 <$Revision: 655654 $>Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/Licensed to The Apache Software Foundation, http://www.apache.org/Benchmarking 101.200.*.* (be patient)Completed 100 requestsCompleted 200 requestsCompleted 300 requestsCompleted 400 requestsCompleted 500 requestsCompleted 600 requestsCompleted 700 requestsCompleted 800 requestsCompleted 900 requestsCompleted 1000 requestsFinished 1000 requestsServer Software:        Apache-Coyote/1.1Server Hostname:        101.200.*.*  ##请求主机Server Port:            80          ##请求端口Document Path:          /       ##请求URL地址Document Length:        714 bytes ##http响应正文的长度Concurrency Level:      10       ##并发数Time taken for tests:   36.495 seconds   ##所有请求完成时间Complete requests:      1000         ##完成请求数量Failed requests:        1            ##失败的请求数量   (Connect: 1, Receive: 0, Length: 0, Exceptions: 0)Write errors:           0Total transferred:      1024070 bytes      ##整个过程中网络传输量HTML transferred:       714000 bytes       ##整个过程HTML传输量Requests per second:    27.40 [#/sec] (mean)  ##重要指标，服务器吞吐率Time per request:       364.949 [ms] (mean)   ##用户平均请求等待时间Time per request:       36.495 [ms] (mean, across all concurrent requests)   ##每个平均请求实际运行平均值Transfer rate:          27.40 [Kbytes/sec] received  ##表示请求单位时间内流量Connection Times (ms)              min  mean[+/-sd] median   maxConnect:        3   14 164.1      6    3009Processing:     7  327 2036.4     56   21064Waiting:        5  223 1784.8     33   21057Total:         14  341 2041.8     62   21070##统计用户等待时间Percentage of the requests served within a certain time (ms)  50%     62  66%     64  75%     66  80%     66  90%     71  95%     75  98%   3064  99%   3350 100%  21070 (longest request)

此为学习笔记