PHP 使用Apache 中的ab 测试网站的压力性能
打开Apache服务器的安装路径(我用的是 WampServer)，在bin目录中有一个ab.exe的可执行程序，它就是要介绍的压力测试工具。
在Windows系统的命令行下，进入ab.exe程序所在目录，执行ab.exe程序。注意直接双击无法正确运行。喎?http://www.Bkjia.com/kf/ware/vc/" target="_blank" class="keylink">vcD4KPHA+ICAgICAgICBkOii72LO1L734yOtExcwpPGJyPgo8L3A+CjxwPiA8aW1nIHNyYz0="http://www.2cto.com/uploadfile/Collfiles/20140614/20140614091704240.jpg" alt="\">
cd wamp\bin\apache\Apache2.4.4\bin(回车/进入 bin目录)
ab(回车/)
如果看到下列一些帮助信息就说明成功启动ab
开始启动ab 压力测试
ab -n 5000 -c 200 http://localhost/test.php
上例表示总共访问http://localhost/test.php这个脚本5000次，200并发(模拟200个用户同时访问)。
ab常用参数的介绍：
-n ：总共的请求执行数，缺省是1;
-c： 并发数，缺省是1;
-t：测试所进行的总时间，秒为单位，缺省50000s
-p：POST时的数据文件
-w: 以HTML表的格式输出结果
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