ObjectThreadPool

[thomas_l]

I have been having an issue with  an HP-UX 11.23 system.   There is a process named ObjectThreadPool that is been averaging about 120% CPU utilization all the time.  I have rebooted numerous times and it keeps going back up to 100%+ CPU usage.

echo " %CPU PID RUSER COMMAND" ;UNIX95= ps -ef -o 'pcpu pid ruser args'|sort -nr|head -10
 %CPU PID RUSER COMMAND
161.32    10 root     ObjectThreadPool
 0.56    55 root     vxfsd
 0.31  2719 root     /opt/OV/lbin/perf/coda
 0.15    39 root     schedcpu
 0.14  3157 root     vxsvc -r /opt/VRTSob/config/Registry -e
 0.14  2238 root     /opt/wbem/sbin/cimserver
 0.12  2716 root     /opt/OV/bin/ovcd

11:44  up 23:51,  load average:    0.76, 0.73, 0.73
156 processes: 129 sleeping, 27    running, 0 stopped, 0 zombie, 0    idle, 0    other
CPU states:   0     0.19% user,  0.00% nice, 14.68% sys, 85.14% idle,  0.00% intr
              1     0.14% user,  0.00% nice, 26.58% sys, 73.28% idle,  0.00% intr
              2     0.19% user,  0.00% nice, 23.88% sys, 75.93% idle,  0.00% intr
              3     0.10% user,  0.00% nice, 50.13% sys, 49.77% idle,  0.00% intr
Mem:  12566784K    total,    489000K    used, 9727800K free
Swap: 8388608K total, 7842212K used,  546396K free

Pid   User     Pri NI  vsz       res       Share     Stat %cpu   %mem   time  Command                                                                                    
   10 root     152  20         0       768       0 r      146.12   0.01    1638: ObjectThreadPo
   55 root     152  20         0      2944       0 r        0.57   0.02     1:46 vxfsd
 2719 root     152  20      118436     13572     68712 r        0.42   0.11     4:07 coda
 3157 root     152  20      111140     16896    105748 r        0.14   0.13     0:10 vxsvc
 2238 root     152  20      171720     68452    114516 r        0.14   0.54     0:13 cimserver

Trying to attach to the process to see what is going on results in permission denied:

<>$truss -p 10
truss: ttrace(TT_PROC_ATTACH, 10, 0, 0, dad0001, 0): Permission denied
truss: no process to attach to

I don't see anything in the logs to direct me to what the root cause is.

Anyone have any suggestions?

Thanks

Tom

[Dennis Handly]

>There is a process named ObjectThreadPool that is been averaging about 120% CPU utilization all the time.

See this topic:

http://h30499.www3.hp.com/t5/System-Administration/What-is-ObjectThreadPool-process/m-p/3963033

>Anyone have any suggestions?

Talk to Support?