System Cpu Between 50-70% and need to find out why

[Paul]

Dear Gentlemen,

Thank you very much for your help so far. I was certainly looking for 
the "S" option. When you are tired these things are easy to miss.

Here is an output of the system with the md driver removed and 
everything is on the hard drive for now. The system usage is still really high.

Does anyone have any suggestions based on the output below?

Thanks

Paul


last pid: 36756;  load averages:  8.74,  9.74, 
10.40                                                     up 
0+16:08:41  20:28:14
279 processes: 15 running, 241 sleeping, 21 waiting, 2 lock
CPU states: 11.9% user,  0.4% nice, 80.6% system,  6.9% interrupt,  0.2% idle
Mem: 1732M Active, 5146M Inact, 354M Wired, 48K Cache, 214M Buf, 8432M Free
Swap: 8192M Total, 8192M Free

   PID USERNAME       THR PRI NICE   SIZE    RES STATE  C   TIME    CPU COMMAND
    44 root             1 171   52     0K    16K CPU2   3  67:25 
60.40% pagezero
    13 root             1 171   52     0K    16K RUN    0  94:38 
17.09% idle: cpu0
    10 root             1 171   52     0K    16K RUN    3  92:38 
15.19% idle: cpu3
36391 vscan            1  20    0   121M 80732K lockf  0   0:04 
12.35% perl5.8.8
36705 user1           1 131    0 15792K  3352K RUN    3   0:03 11.67% imapd
36301 vscan            1  20    0   122M 81896K lockf  1   0:09 
10.79% perl5.8.8
36180 vscan            1  20    0   125M 84988K lockf  1   0:17 
10.01% perl5.8.8
36266 vscan            1  20    0   126M 84964K 
lockf  0   0:10  8.89% perl5.8.8
    14 root             1 -44 -163     0K    16K 
WAIT   3  99:21  7.57% swi1: net
    15 root             1 -32 -151     0K    16K 
WAIT   0  93:54  7.47% swi4: clock sio
  1211 bind             1 101    0 74372K 71180K select 0 108:51  7.37% named
    12 root             1 171   52     0K    16K 
RUN    1  71:18  6.93% idle: cpu1
36731 user2          1 130    0 15648K  3228K CPU3   0   0:02  6.54% imapd
94452 nobody           1  20    0   144M 38836K lockf  1   0:17  5.76% httpd
35798 vscan            1  20    0   127M 86464K 
lockf  0   0:25  5.08% perl5.8.8
    11 root             1 171   52     0K    16K 
RUN    2  61:38  4.64% idle: cpu2
36405 root             1 100    0  7416K  2680K CPU0   0   0:02  3.61% top
94286 nobody           1  98    0   142M 36928K select 0   0:11  3.32% httpd
36337 user3          1   4    0 10768K  2968K sbwait 3   0:03  3.08% qpopper
    47 root             1  20    0     0K    16K syncer 0  50:27  2.83% syncer
94448 nobody           1  20    0   148M 43092K lockf  1   0:45  2.69% httpd
    24 root             1 -68 -187     0K    16K 
WAIT   3  31:51  2.64% irq17: em0
    25 root             1 -68 -187     0K    16K 
WAIT   0  47:22  2.59% irq18: em1 em2
  3554 vscan            2  99    0   104M 93616K ucond  3  11:59  2.39% clamd
  5028 nobody           1  98    0   144M 38840K select 0   0:11  2.34% httpd
  7187 root             1 131    0  9656K  4016K 
RUN    3   3:59  2.25% sendmail
36179 vscan            1 103    0   126M 85340K select 
0   0:12  2.20% perl5.8.8
  1582 root             1 130    0  5868K  1536K allpro 3   9:36  1.32% inetd
45382 root             1  97    0  3688K  1308K select 0   8:30  1.32% syslogd


>>>My system is being killed by a system cpu always between 50-70% on
>>>Freebsd 6.2 with SMP enabled. Does anyone know of a quick tool to be
>>>able to tell me what is making up that 50-70% for the System Cup Usage.
>>Uh you had the right idea but forgot to paste the relevant bits ;-)
>>
>>top *is* the tool for working out what processes are using your CPU.
>>Although your high load average suggests that your system is just
>>heavily loaded and it is expected that it will be using 100% CPU.
>Maybe Paul havn't found "S" in top?
>
>Enter "S" when runing top (to show system processes) and you might 
>find out more about whats going on.
>
>
>         /Chris