topic Process hogging the CPU in Operating System - HP-UX

Process hogging the CPU

Prabu_3 — Tue, 21 Dec 2004 10:46:15 GMT

We are running Java enterprise applications on HP-UX 11.11 (PA-RISC) architecture server. We have installed GOLDBASE11i, GOLDAPP11i packages which are released on September 2004. We have installed JavaOOB product also.

We are seeing a peculiar problem, that some of these enterprise applications goes out of control(i.e if I use 'top' command, I could see that its CPU usage is about 95%). When I trace the process using tusc command, I could see the following sequence of calls :

gettimeofday(....)
nanosleep(..)

I would like to know if anyone has faced similar problems. If so, I would like to know the remedy I need to apply.

Note; I have installed PHSS_30966 patch.

Re: Process hogging the CPU

Steven E. Protter — Tue, 21 Dec 2004 11:00:37 GMT

Seems that you are patched pretty well.

This would appear to be an application problem.

But java patches are not included in what you have installed thus far.

I'd check http://www.hp.com/go/java for requierd or recommended patches based on the current java product set you have installed.

I'd be prepared after installing that to re-install java. If the problem persists at that point I'd be talkinig to the application vendor about the issue.

Its perfectly okay to proceed with multiple tracks at the same time.

SEP

Re: Process hogging the CPU

RAC_1 — Tue, 21 Dec 2004 11:18:51 GMT

If it is about java application, you can have a look at Jconfig product (HP product and free if remember correctly.) This would do analyzation for java applications.

Anil

Re: Process hogging the CPU

Prabu_3 — Tue, 21 Dec 2004 15:46:32 GMT

I have downloaded HPjconfig tar ball and executing it.

Re: Process hogging the CPU

Ted Buis — Wed, 22 Dec 2004 17:55:55 GMT

java -XX:-UseHighResolutionTimer

This java run time option might help to solve your problem. It avoids the atomic system call, and unless your application really needs the accuracy, may not make any difference.