近日flying殿建议用cherokee来替换掉已经在VPS上运行了一年多的nginx，cherokee内建一个基于Web的管理界面，设置相当方便，不过性能如何还是个未知数，因此用ApacheBench进行了压力测试进行对比。

使用的命令参数如下：

ab -n 1000 -c 50 [URL]

也就是使用50个并发连接，总共创建1000个连接。

cherokee和nginx都运行在我的VMware内的Ubuntu Server中，进程数量均为4，均使用php fastcgi调用php。

下面分别是测试成绩：

首先是cherokee

Server Software:        Cherokee/0.99.39
Server Hostname:        192.168.2.129
Server Port:            80

Document Path:          /blog/
Document Length:        5938 bytes

Concurrency Level:      50
Time taken for tests:   351.703 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      6175000 bytes
HTML transferred:       5938000 bytes
Requests per second:    2.84 [#/sec] (mean)
Time per request:       17585.156 [ms] (mean)
Time per request:       351.703 [ms] (mean, across all concurrent requests)
Transfer rate:          17.15 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   2.4      0      16
Processing:  1922 17197 2084.4  17531   18656
Waiting:     1922 17189 2083.5  17531   18656
Total:       1922 17197 2084.5  17531   18656

Percentage of the requests served within a certain time (ms)
  50%  17531
  66%  17750
  75%  17859
  80%  17969
  90%  18141
  95%  18281
  98%  18422
  99%  18484
 100%  18656 (longest request)

然后是nginx

Server Software:        nginx/0.7.62
Server Hostname:        192.168.2.129
Server Port:            81

Document Path:          /blog/
Document Length:        6004 bytes

Concurrency Level:      50
Time taken for tests:   333.578 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      6231000 bytes
HTML transferred:       6004000 bytes
Requests per second:    3.00 [#/sec] (mean)
Time per request:       16678.906 [ms] (mean)
Time per request:       333.578 [ms] (mean, across all concurrent requests)
Transfer rate:          18.24 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   1.8      0      16
Processing:  1656 16307 1965.4  16656   17438
Waiting:     1656 16302 1965.4  16656   17422
Total:       1656 16307 1965.5  16656   17438

Percentage of the requests served within a certain time (ms)
  50%  16656
  66%  16781
  75%  16844
  80%  16875
  90%  17000
  95%  17078
  98%  17250
  99%  17313
 100%  17438 (longest request)

可以看到性能方面仍然还是nginx有略微领先（并且不是最新版本——虽然无法判断最新版本的性能是提升还是下降），不过考虑到cherokee的管理界面相当友好，内存占用方面和nginx也不相上下，VPS上的网站的流量也都不大（应该吧？ orz），看来近期可以准备动手从nginx迁移过去了～