WebBench安装和使用

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1、WebBench安装：
官网http://home.tiscali.cz/~cz210552/webbench.html
wget http://home.tiscali.cz/~cz210552/distfiles/webbench-1.5.tar.gz
tar zxvf webbench-1.5.tar.gz
cd webbench-1.5
make
make install

2、WebBench使用：
webbench -c 1000 -t 60 http://xxx.xxx.xxx.xxx/phpinfo.php
webbench -c 并发数 -t 运行测试时间 URL

Apache测试实例结果：
当并发300时，
root [ ~ ]# webbench -c 300 -t 60 http://xxx.xxx.xxx.xxx/phpinfo.php
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.

Benchmarking: GET http://xxx.xxx.xxx.xxx/phpinfo.php
300 clients, running 60 sec.

Speed=24525 pages/min, 20794612 bytes/sec.
Requests: 24525 susceed, 0 failed.

每秒钟响应请求数：24525 pages/min，每秒钟传输数据量20794612 bytes/sec.

当并发1000时，已经显示有87个连接failed了，说明超负荷了。

root [ ~ ]# webbench -c 1000 -t 60 http://xxx.xxx.xxx.xxx/phpinfo.php
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.

Benchmarking: GET http://xxx.xxx.xxx.xxx/phpinfo.php
1000 clients, running 60 sec.

Speed=24920 pages/min, 21037312 bytes/sec.
Requests: 24833 susceed, 87 failed.