1 概述

　　ab(ApacheBench)是Apache自带的超文本传输协议(HTTP)性能测试工具。 其设计意图是描绘当前所安装的Apache的执行性能， 主要是显示你安装的Apache每秒可以处理多少个请求。

　　2 使用

　　2.1 安装

　　Apache服务器套件自带ab，只要安装Apache即可，无需另行安装ab。ab位于%ApacheHome%/bin目录下(“%ApacheHome%”为Aapche安装路径)，你也可以把ab.exe文件copy出来，独立使用。

　　2.2 参数列表

　　 C:>ab
　　ab: wrong number of arguments
　　Usage: ab [options] [http://]hostname[:port]/path
　　Options are:
　　-n requests Number of requests to perform
　　-c concurrency Number of multiple requests to make
　　-t timelimit Seconds to max. wait for responses
　　-p postfile File containing data to POST
　　-T content-type Content-type header for POSTing
　　-v verbosity How much troubleshooting info to print
　　-w Print out results in HTML tables
　　-i Use HEAD instead of GET
　　-x attributes String to insert as table attributes
　　-y attributes String to insert as tr attributes
　　-z attributes String to insert as td or th attributes
　　-C attribute Add cookie, eg. ‘Apache=1234. (repeatable)
　　-H attribute Add Arbitrary header line, eg. ‘Accept-Encoding: gzip’
　　Inserted after all normal header lines. (repeatable)
　　-A attribute Add Basic WWW Authentication, the attributes
　　are a colon separated username and password.
　　-P attribute Add Basic Proxy Authentication, the attributes
　　are a colon separated username and password.
　　-X proxy:port Proxyserver and port number to use
　　-V Print version number and exit
　　-k Use HTTP KeepAlive feature
　　-d Do not show percentiles served table.
　　-S Do not show confidence estimators and warnings.
　　-g filename Output collected data to gnuplot format file.
　　-e filename Output CSV file with percentages served
　　-h Display usage information (this message)
　　* 中文的列表可以查看Apache手册中文版。
　　以上参数最常用的是-n 在测试会话中所执行的请求个数;和-c 一次同时产生的并发请求个数。