Invisible process killing the CPU

[Laszlo Nagy]

75% user, 24.2% system, 0.0% idle. Despite those stats, I do not see what is eating up 100% cpu time. I already restarted the computer but it is the same. This problem started some hours ago. The CPU is hot, I can feel it on the air stream pouring out the computer case. There are more people that should work with this computer, but they can't. It is terribly slow. Please help me.

The system is FreeBSD 6.1.

Thanks,

   Laszlo


# top -S -ocpu
last pid: 62029;  load averages:  1.23,  1.49,  
1.23                                                 up 11+05:54:11  
15:19:38
110 processes: 3 running, 88 sleeping, 1 zombie, 18 waiting
CPU states: 75.0% user,  0.0% nice, 24.2% system,  0.8% interrupt,  0.0% 
idle
Mem: 104M Active, 90M Inact, 99M Wired, 25M Cache, 60M Buf, 174M Free
Swap: 5120M Total, 172K Used, 5120M Free

  PID USERNAME         THR PRI NICE   SIZE    RES STATE    TIME   WCPU 
COMMAND
   11 root               1 171   52     0K     8K RUN    226.8H  0.00% idle
   13 root               1 -32 -151     0K     8K WAIT   154:02  0.00% 
swi4: clock sio
  245 root               1  96    0  3500K  1948K select  57:11  0.00% ppp
   20 root               1 -68 -187     0K     8K WAIT    31:23  0.00% 
irq19: rl0
 1021 root               2  20    0  6308K  4208K kserel  30:54  0.00% 
python
   21 root               1 -64 -183     0K     8K WAIT    28:18  0.00% 
irq20: atapci0
   31 root               1 -68 -187     0K     8K WAIT    26:59  0.00% 
irq23: vr0
    4 root               1  -8    0     0K     8K -       20:13  0.00% 
g_down
   12 root               1 -44 -163     0K     8K WAIT    15:57  0.00% 
swi1: net
    3 root               1  -8    0     0K     8K -       11:06  0.00% g_up
   39 root               1  20    0     0K     8K syncer   5:36  0.00% 
syncer
   36 root               1  -8 -127     0K     8K pgzero   4:36  0.00% 
pagezero
   15 root               1 -16    0     0K     8K -        4:17  0.00% 
yarrow
  718 bind               1  96    0  4752K  3564K select   3:26  0.00% named
    7 root               1  -8    0     0K     8K m:w1     2:43  0.00% 
g_mirror gm0
  366 root               1  96    0  1300K   836K select   2:36  0.00% 
syslogd
   40 root               1 -16    0     0K     8K sdflus   1:02  0.00% 
softdepflush
   45 root               1 -16    0     0K     8K -        0:59  0.00% 
schedcpu
17794 root               1  96    0  8272K  4408K select   0:50  0.00% smbd
   37 root               1 -16    0     0K     8K psleep   0:44  0.00% 
bufdaemon
    2 root               1  -8    0     0K     8K -        0:28  0.00% 
g_event
  827 root               1  96    0  5020K  2008K select   0:26  0.00% nmbd
   38 root               1  -4    0     0K     8K vlruwt   0:21  0.00% vnlru
 1101 dovecot            1   4    0  2540K  1700K kqread   0:18  0.00% 
imap-login
  953 root               1   4    0  1396K   972K kqread   0:16  0.00% 
dovecot
 1100 root               1   4    0  1612K  1036K kqread   0:14  0.00% 
dovecot-auth