centos7.5 ab压力测试安装和swoole压力测试

Apache Benchmark(简称ab) 是Apache安装包中自带的压力测试工具 ，简单易用

1、ab安装

yum -y install httpd-tools

2、ab参数详解，传送门：http://httpd.apache.org/docs/2.2/programs/ab.html

3、ab使用

模拟10000连接数、100并发量

ab -n  -c  http://127.0.0.1:9501/client.php

内容及解释

Server Software:        swoole-http-server(服务器软件名称及版本信息)
Server Hostname:        127.0.0.1(服务器主机名)
Server Port:            9501(服务器端口)

Document Path:          /client.php(供测试的URL路径)
Document Length:         bytes(供测试的URL返回的文档大小)

Concurrency Level:      100(并发数)
Time taken for tests:   5.977 seconds(压力测试消耗的总时间)
Complete requests:      10000(并发的总次数)
Failed requests:        956(失败的请求数)
   (Connect: , Receive: , Length: , Exceptions: )
Write errors:           0(网络连接写入错误数)
Total transferred:       bytes(传输的总数据量)
HTML transferred:        bytes(HTML文档的总数据量)
Requests per second:    1673.16 [#/sec] (mean)(平均每秒的请求数)
Time per request:       59.767 [ms] (mean)(所有并发用户(这里是1000)都请求一次的平均时间)
Time per request:       0.598 [ms] (mean, across all concurrent requests)(单个用户请求一次的平均时间)
Transfer rate:          5587.91 [Kbytes/sec] received（每秒获取的数据长度 (传输速率，单位：KB/s)）

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:               2.4
Processing:           4.7
Waiting:              4.7
Total:               3.4           

Percentage of the requests served within a certain time (ms)
  %     59　　## 50%的请求在59ms内返回
  %     60　　## 56%的请求在60ms内返回
  %
  %
  %
  %
  %
  %
 %      (longest request)

参考：https://blog.csdn.net/u011415782/article/details/78501799