Webbench进行网站压力测试

今天突然发现一个新大陆，Webbench，是linux下，用这很方便，开源，不限制并发访问次数和时间....大爱啊！ 

下载Webbench

使用wget  或者windows下载好导入linux也行，地址：http://home.tiscali.cz/cz210552/distfiles/webbench-1.5.tar.gz

编译安装 

root@jack-desktop:~/software# tar xvzf webbench-1.5.tar.gz
root@jack-desktop:~/software/webbench-1.5# make
cc -Wall -ggdb -W -O   -c -o webbench.o webbench.c
webbench.c: In function ‘alarm_handler’:
webbench.c:77: warning: unused parameter ‘signal’
cc -Wall -ggdb -W -O  -o webbench webbench.o
ctags *.c
root@jack-desktop:~/software/webbench-1.5# make install
install -s webbench /usr/local/bin
install -m 644 webbench.1 /usr/local/man/man1
install -d /usr/local/share/doc/webbench
install -m 644 debian/copyright /usr/local/share/doc/webbench
install -m 644 debian/changelog /usr/local/share/doc/webbench
root@jack-desktop:~/software/webbench-1.5#
root@jack-desktop:~/software/webbench-1.5# web
webbench  webs

ok,安装成功

看看他的帮助文档

root@jack-desktop:~/software/webbench-1.5# webbench --help
webbench [option]... URL
  -f|--force               Don't wait for reply from server.
  -r|--reload              Send reload request - Pragma: no-cache.
  -t|--time <sec>          Run benchmark for <sec> seconds. Default 30.
  -p|--proxy <server:port> Use proxy server for request.
  -c|--clients <n>         Run <n> HTTP clients at once. Default one.
  -9|--http09              Use HTTP/0.9 style requests.
  -1|--http10              Use HTTP/1.0 protocol.
  -2|--http11              Use HTTP/1.1 protocol.
  --get                    Use GET request method.
  --head                   Use HEAD request method.
  --options                Use OPTIONS request method.
  --trace                  Use TRACE request method.
  -?|-h|--help             This information.
  -V|--version             Display program version.
root@jack-desktop:~/software/webbench-1.5#

使用

用法很简单，下面简单的测试使用

root@jack-desktop:~/software/webbench-1.5# webbench -c 100 http://localhost:12345/test
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.

Benchmarking: GET http://localhost:12345/test
100 clients, running 30 sec.

Speed=495888 pages/min, 586798 bytes/sec.
Requests: 247944 susceed, 0 failed.

并发100个，运行30s，访问请求全部成功，速度495888 pages/min, 586798 bytes/sec

 

root@jack-desktop:~/software/webbench-1.5# webbench -c 1000 http://localhost:12345/test
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.

Benchmarking: GET http://localhost:12345/test
1000 clients, running 30 sec.

Speed=414996 pages/min, 490915 bytes/sec.
Requests: 207430 susceed, 68 failed.

并发1000个，运行30s，访问68个失败，速度也慢下来了，414996 pages/min, 490915 bytes/sec

但是完全达到我的需求了！哈哈

另外我还发现个问题，就是在并发很大时我的服务器占用资源很厉害，主要是CPU占用过多，有时达到80%以上！

总结：

1、压力测试工作应该放到产品上线之前，而不是上线以后 

2、测试时尽量跨公网进行，而不是内网

3、测试时并发应当由小逐渐加大，比如并发100时观察一下网站负载是多少、打开是否流程，并发200时又是多少、网站打开缓慢时并发是多少、网站打不开时并发又是多少 

4、 应尽量进行单元测试，如B2C网站可以着重测试购物车、推广页面等，因为这些页面占整个网站访问量比重较大