CentOS 5.8 64位 CPU占用高，频繁死机

loopool

新安装了一台服务器，CPU Xeon E31230，内存16G，网站开通后，CPU使用率一直在90%以上，负载能有30左右，运行几个小时以后服务器就死机
不知道是什么原因导致CPU占用高

环境：CentOS 5.8, Apache 2.2.22,  MySQL 5.2.58 ,PHP 5.2.17
Apache 配置

1. <IfModule prefork.c>
   
2. StartServers       8
   
3. MinSpareServers    5
   
4. MaxSpareServers   20
   
5. ServerLimit      1500
   
6. MaxClients       1000
   
7. MaxRequestsPerChild  1000
   
8. </IfModule>

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错误日志

1. [warn] child process 7708 still did not exit, sending a SIGTERM
   
2. [warn] child process 7711 still did not exit, sending a SIGTERM
   
3. [warn] child process 7714 still did not exit, sending a SIGTERM
   
4. [warn] child process 7728 still did not exit, sending a SIGTERM
   
5. [warn] child process 7729 still did not exit, sending a SIGTERM
   
6. [warn] child process 7732 still did not exit, sending a SIGTERM
   
7. [warn] child process 7801 still did not exit, sending a SIGTERM
   
8. [warn] child process 7966 still did not exit, sending a SIGTERM
   
9. [warn] child process 7708 still did not exit, sending a SIGTERM
   
10. [warn] child process 7711 still did not exit, sending a SIGTERM
    
11. [warn] child process 7714 still did not exit, sending a SIGTERM
    
12. [warn] child process 7728 still did not exit, sending a SIGTERM
    
13. [warn] child process 7729 still did not exit, sending a SIGTERM
    
14. [warn] child process 7732 still did not exit, sending a SIGTERM
    
15. [warn] child process 7801 still did not exit, sending a SIGTERM
    
16. [warn] child process 7966 still did not exit, sending a SIGTERM
    
17. [warn] child process 7708 still did not exit, sending a SIGTERM
    
18. [warn] child process 7711 still did not exit, sending a SIGTERM
    
19. [warn] child process 7714 still did not exit, sending a SIGTERM
    
20. [warn] child process 7728 still did not exit, sending a SIGTERM
    
21. [warn] child process 7729 still did not exit, sending a SIGTERM
    
22. [warn] child process 7732 still did not exit, sending a SIGTERM
    
23. [warn] child process 7801 still did not exit, sending a SIGTERM
    
24. [warn] child process 7966 still did not exit, sending a SIGTERM
    
25. [error] child process 7708 still did not exit, sending a SIGKILL
    
26. [error] child process 7711 still did not exit, sending a SIGKILL
    
27. [error] child process 7714 still did not exit, sending a SIGKILL
    
28. [error] child process 7728 still did not exit, sending a SIGKILL
    
29. [error] child process 7729 still did not exit, sending a SIGKILL
    
30. [error] child process 7732 still did not exit, sending a SIGKILL
    
31. [error] child process 7966 still did not exit, sending a SIGKILL
    
32. [notice] caught SIGTERM, shutting down
    
33. [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
    
34. [notice] Digest: generating secret for digest authentication ...
    
35. [notice] Digest: done
    
36. [notice] Apache/2.2.22 (Unix) DAV/2 PHP/5.2.17 configured -- resuming normal operations

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q1208c

在高的时候, 谁占了 CPU 呢 ?

loopool

Apache 好几个线程占用率都在70%以上回复 2# q1208c


   

vincent_lnfsddy

回复 1# loopool

1. <IfModule prefork.c>
   
2. StartServers       8
   
3. MinSpareServers    5
   
4. MaxSpareServers   20
   
5. ServerLimit      1500
   
6. MaxClients       1000
   
7. MaxRequestsPerChild  0
   
8. </IfModule>

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试试这个apache 的prefork.c参数

改系统应用用户文件描述符：
#ulimit -SHn 20480

loopool

最大文件打开数之前已经改为65565
MaxRequestsPerChild 设为0,不会存在内存泄露的问题吗？回复 4# vincent_lnfsddy


   

q1208c

回复 3# loopool


你的 apache上是不是有什么 mod ?

正常情况下, apache不应该占太多的 CPU 的.

loopool

Compiled in modules:
  core.c
  prefork.c
  http_core.c
  mod_so.c

没有多余的mod吧
回复 6# q1208c


   

q1208c

回复 7# loopool

这些是静态编译进去的, 不是动态加载的. 你要看一下你动态加载的 mod. 如果只有这些, 是不该导致占CPU很高的.