abquese软件linux版,CentOS Web压力测试工具ApacheBench （ab）独立安装
Apache服务自带了应该用于压力测试的工具ab(ApacheBench)，对应做一些简单的压力测试，它完全能够胜任，本文主要介绍，在centos中不安装Apache的情况下，安装ab
1，ab运行的时候需要依赖包，我们先安装依赖包，直接yum安装就可以了
yum install apr-util
2， 下载apache的rpm包，分离ab
[root@Tomcat ~]# mkdir ab
[root@Tomcat ~]# cd ab
[root@Tomcat ab]# yum -y install yum-utils
[root@Tomcat ab]# yumdownloader httpd #yumdownloader 需要安装yum-utils才能使用，默认是没有的安装的
[root@Tomcat ab]# rpm2cpio httpd-2.2.3-91.el5.centos.i386.rpm |cpio -idmv
[root@Tomcat ab]# \cp -pa usr/bin/ab /usr/bin/ #复制到系统PATH就可以使用了
3，ab简单用法
参数很多，一般我们用 -c 和 -n 参数就可以了。
#ab -c 1000 -n 4000 http://www.yousite.com/index.html #具体到某页面
-n后面的4000代表总共发出4000个请求；
-c后面的1000表示采用1000个并发(模拟1000个人同时访问)，后面的网址表示测试的目标URL。
[root@Tomcat ab]# ab -c 1000 -n 4000 http://192.168.0.222/docs/manager-howto.html
This is ApacheBench, Version 2.0.40-dev 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 192.168.0.222 (be patient)
Completed 400 requests
Completed 800 requests
Completed 1200 requests
Completed 1600 requests
Completed 2000 requests
Completed 2400 requests
Completed 2800 requests
Completed 3200 requests
Completed 3600 requests
Finished 4000 requests
Server Software: nginx/1.4.3
Server Hostname: 192.168.0.222
Server Port: 80
Document Path: /docs/manager-howto.html
Document Length: 73924 bytes
Concurrency Level: 1000
Time taken for tests: 0.875928 seconds
Complete requests: 4000
Failed requests: 0
Write errors: 0
Total transferred: 296732000 bytes
HTML transferred: 295696000 bytes
Requests per second: 4566.59 [#/sec] (mean)
#最重要的指标之一，相当于LR中的每秒事务数，后面括号中的mean表示这是一个平均值，越大抗压越强
Time per request: 218.982 [ms] (mean)
#最重要的指标之二，相当于LR中的平均事务响应时间，后面括号中的mean表示这是一个平均值
Time per request: 0.219 [ms] (mean, across all concurrent requests)
Transfer rate: 330822.86 [Kbytes/sec] received
#平均每秒网络上的流量，吞吐量，越大抗压越强
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 4.5 0 29
Processing: 1 17 14.5 17 653
Waiting: 0 17 14.5 17 653
Total: 15 18 15.2 17 674
Percentage of the requests served within a certain time (ms)
50% 17
66% 18
75% 18
80% 18
90% 20
95% 22
98% 37
99% 40
100% 674 (longest request)
主要介绍里面的几个指标，我基本也就看这几个指标，简单测试足够了，如果要全面的监控nginx，需要用到专业的监控程序，如nagios