samba - Apr 2010 - Very high cpu due to cups. Samba 3.5.2 ok though.

Hi,

We're seeing this at the moment. It's quite a beefy box and we can't
see any reason why cups is running so high:

4 x Intel(R) Xeon(R) CPU           E5345  @ 2.33GHz

rpm -q cups
cups-1.3.7-11.el5_4.6

rpm -q samba3
samba3-3.5.2-43.el5

Samba is from sernet and is running with an OpenLDAP backend in full
domain mode with about 100 users and about 12 printers.


top - 14:28:21 up 21:07,  5 users,  load average: 1.35, 1.07, 1.13
Tasks: 274 total,   2 running, 272 sleeping,   0 stopped,   0 zombie
Cpu(s): 22.4%us,  1.6%sy,  0.0%ni, 75.8%id,  0.0%wa,  0.0%hi,  0.2%si,  0.0%st
Mem:   3753984k total,  2629912k used,  1124072k free,   338668k buffers
Swap:  2031608k total,      184k used,  2031424k free,  1624844k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
17025 root      18   0 12052 5020 2480 R 83.4  0.1  19:59.94 cupsd


free -m
             total       used       free     shared    buffers     cached
Mem:          3666       2567       1098          0        331       1586
-/+ buffers/cache:        649       3016
Swap:         1983          0       1983

We've switch off logging in cupsd.conf which has helped bring it down
from 99% CPU.

Anyone seen this before?

Thanks.