webbench压力测试工具
webbench安装
wget http://home.tiscali.cz/~cz210552/webbench.html
tar zxvf webbench-1.5.tar.gz
cd webbench-1.5
make
make install
Apache测试实例结果：
当并发300时，root [ ~ ]# webbench -c 300 -t 60 http://192.168.80.157/phpinfo.php
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.
Benchmarking: GET http://192.168.80.157/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://192.168.80.157/phpinfo.php
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.
Benchmarking: GET http://192.168.80.157/phpinfo.php
1000 clients, running 60 sec.
Speed=24920 pages/min, 21037312 bytes/sec.
Requests: 24833 susceed, 87 failed.
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