http://blog.sina.com.cn/s/blog_4a082e2f0100dvi9.html
利用Apache自带的测试工具ab对Server进行测试的情况(设定请求的index页面为6bytes),cpu%为cpu占用率，mem为内存使用量(M为单位)，RequestsPerSecond为每秒处理的请求数。
1、Prefor方式
(ServerLimit,StartServer,MinSpareServers,MaxSpareServers,MaxClients,MaxRequestPerChild)
| -n/-c(ab参数) |
Cpu% |
Mem |
Requestspersecond |
| (－,5,5,10,150,0) |
| 100000/100 |
28.8 |
285 |
8434 |
| 100000/200 |
29.2 |
304 |
8032 |
| 100000/500 |
25.3 |
323 |
7348 |
| 100000/1000 |
24.4 |
330 |
5886 |
| (10000,5,5,10,500,0) |
| 100000/100 |
28.7 |
371 |
8345 |
| 100000/200 |
27.4 |
389 |
7929 |
| 100000/500 |
24.9 |
417 |
7229 |
| 100000/1000 |
23.4 |
437 |
6676 |
| (10000,5,5,10,1000,0) |
| 100000/100 |
28.8 |
408 |
8517 |
| 100000/200 |
27.0 |
422 |
8045 |
| 100000/500 |
24.2 |
455 |
7236 |
| 100000/1000 |
22.5 |
470 |
6570 |
| (10000,5,5,10,1500,0) |
| 100000/100 |
29.6 |
330 |
8407 |
| 100000/200 |
28.1 |
349 |
8014 |
| 100000/500 |
26.4 |
380 |
7290 |
| 100000/1000 |
24.0 |
400 |
6686 | |
2、Worker方式
(ServerLimt,Threadlimt,Startservers,MaxClients,MinspareThread,MaxspareThread,ThreadperChild,MaxRequestPerChild)
| -n/-c(ab参数) |
cpu% |
mem |
RequestsperSecond |
| (50,500,5,10000,50,200,200,0) |
| 100000/100 |
18.6 |
188 |
6020 |
| 100000/200 |
20.1 |
195 |
5892 |
| 100000/500 |
19.8 |
209 |
5708 |
| 100000/1000 |
22.2 |
218 |
6081 |
| (100,500,5,10000,50,200,100,0) |
| 100000/100 |
24.5 |
240 |
6919 |
| 100000/200 |
23.6 |
247 |
6798 |
| 100000/500 |
24.6 |
254 |
6827 |
| 100000/1000 |
22.3 |
271 |
6114 |
| (200,500,5,10000,50,200,50,0) |
| 100000/100 |
27.3 |
301 |
7781 |
| 100000/200 |
27.4 |
307 |
7789 |
| 100000/500 |
26.0 |
320 |
7141 |
| 100000/1000 |
21.8 |
344 |
6110 |
相对来说，prefork方式速度要稍高于worker，然而它需要的cpu和memory资源也稍多于woker。
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