ApacheBench（ab）测试工具小结

1.安装

如果已经安装Apache，则以及自带了ab测试工具；

下面进行最简安装

#yum install httpd-tools

2.web负债测试

常用命令： ab -n 400  -c 200  -k  http://caicongyang.com:8080/

-n :发起请求次数

-c :并发数

-k 保持keep-alived

3.结果详解

This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking caicongyang.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Finished 400 requests

#测试服务器类型
Server Software:        Apache-Coyote/1.1
#主机
Server Hostname:        caicongyang.com
#端口
Server Port:            8080
#路径
Document Path:          /
#文件长度
Document Length:        11398 bytes  
#并发级别
Concurrency Level:      200
#总耗时
Time taken for tests:   67.469688 seconds
#成功完成请求次数
Complete requests:      400
#失败次数
Failed requests:        0
Write errors:           0
Keep-Alive requests:    0
Total transferred:      4617600 bytes
HTML transferred:       4559200 bytes
<span style="color:#ff0000;">#每秒处理请求次数（平均值）</span>
Requests per second:    5.93 [#/sec] (mean)
<span style="color:#ff0000;">#平均每次请求服务器处理完成时间/整个请求流程</span>
Time per request:       33734.844 [ms] (mean)
<span style="color:#ff0000;">#平均每次服务器处理时间/实际处理时间</span>
Time per request:       168.674 [ms] (mean, across all concurrent requests)
<span style="color:#ff0000;">#网络吞吐量</span>
Transfer rate:          66.83 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:       31   46  70.2     38    1437
Processing:  1184 17633 14533.1  13306   67431
Waiting:       34 9351 13565.1   3887   67324
Total:       1220 17679 14534.8  13344   67468

平均等待时间 = 平均每次处理完成时间-服务器实际处理时间

ps：网络上的文章前篇一率，写的拗口难以理解！

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