high cpu load , apache crashing every 20 minutes

hi
everything is normal and cpu load is under 1 but i dont know why every 10-20-30 minutes cpu load going over 50-60-70 ! apache restarting automatcily ! high cpu load , apache crashing every 20 minutes



this server is useing just one ! perl script , but with huge daily visitors , now perl_mod is enabled and also this script is useing squid cache ,

Server :
Cpu : 2*Dual Xeon 2.4 HTT Enabled
Ram : 1024


Apache :
Code: 
Timeout 50
KeepAlive On
MaxKeepAliveRequests 15
KeepAliveTimeout 10
MinSpareServers 5
MaxSpareServers 25
StartServers 10
MaxClients 300
MaxRequestsPerChild 1000



Code: 
 11:04:55  up 3 days, 12:36,  4 users,  load average: 11.37, 19.79, 13.85
394 processes: 392 sleeping, 2 running, 0 zombie, 0 stopped
CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
           total    1.5%    0.0%    0.9%   0.1%     0.2%   97.0%    0.0%
           cpu00    1.3%    0.0%    0.5%   0.0%     0.5%   97.4%    0.0%
           cpu01    1.7%    0.0%    1.1%   0.0%     0.1%   96.8%    0.0%
           cpu02    0.9%    0.0%    0.3%   0.1%     0.0%   98.4%    0.0%
           cpu03    1.9%    0.0%    1.5%   0.5%     0.3%   95.4%    0.0%
Mem:  1024320k av, 1005584k used,   18736k free,       0k shrd,    7556k buff
                    753892k actv,  142228k in_d,   10992k in_c
Swap: 1052248k av,  438972k used,  613276k free                   20852k cached

  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
17254 root      16   0   896  836   348 S     0.1  0.0   1:28   3 top
 5565 nobody    15   0  7348 5440  3016 S     0.1  0.5   0:00   2 httpd
 5661 nobody    15   0  7316 5760  3004 S     0.1  0.5   0:00   3 httpd
 5699 nobody    15   0  7396 6896  3024 S     0.1  0.6   0:00   0 httpd
 5804 nobody    15   0  5772 5048  1624 S     0.1  0.4   0:00   1 httpd
 5911 root      15   0  1308 1308   796 R     0.1  0.1   0:00   3 top
    1 root      15   0   104   68    44 S     0.0  0.0   0:05   0 init
    2 root      RT   0     0    0     0 SW    0.0  0.0   0:00   0 migration/0
    3 root      RT   0     0    0     0 SW    0.0  0.0   0:00   1 migration/1
    4 root      RT   0     0    0     0 SW    0.0  0.0   0:00   2 migration/2
    5 root      RT   0     0    0     0 SW    0.0  0.0   0:00   3 migration/3
    6 root      15   0     0    0     0 SW    0.0  0.0   0:00   2 keventd
    7 root      34  19     0    0     0 SWN   0.0  0.0   0:00   0 ksoftirqd/0
    8 root      34  19     0    0     0 SWN   0.0  0.0   0:00   1 ksoftirqd/1
    9 root      34  19     0    0     0 SWN   0.0  0.0   0:00   2 ksoftirqd/2
   10 root      34  19     0    0     0 SWN   0.0  0.0   0:00   3 ksoftirqd/3
   13 root      25   0     0    0     0 SW    0.0  0.0   0:00   3 bdflush
   11 root      15   0     0    0     0 SW    0.0  0.0   2:25   3 kswapd
   12 root      15   0     0    0     0 SW    0.0  0.0   5:07   2 kscand
   14 root      15   0     0    0     0 SW    0.0  0.0   0:01   2 kupdated
   15 root      25   0     0    0     0 SW    0.0  0.0   0:00   2 mdrecoveryd
   22 root      25   0     0    0     0 SW    0.0  0.0   0:00   3 scsi_eh_0
   23 root      25   0     0    0     0 SW    0.0  0.0   0:00   3 scsi_eh_1
   26 root      15   0     0    0     0 SW    0.0  0.0   0:29   3 kjournald
  329 root      15   0     0    0     0 SW    0.0  0.0   0:00   3 kjournald
  691 root      15   0   156  136    76 S     0.0  0.0   0:03   3 syslogd
  695 root      15   0   104   92    44 S     0.0  0.0   0:01   0 klogd
  705 root      15   0   248  240   184 S     0.0  0.0   0:00   3 irqbalance
  716 root      RT   0   144   40     8 S     0.0  0.0   0:18   2 auditd
  738 nobody    15   0   660  216   108 S     0.0  0.0   0:00   0 proftpd
 1502 named     25   0  1692  800   496 S     0.0  0.0   0:00   2 named

 

 

 

 

Top