topic rds at 100%CPU using glance in Operating System - HP-UX

rds at 100%CPU using glance

Isralyn Manalac_1 — Fri, 05 Mar 2004 02:44:08 GMT

OS: HPUX11i
Dataprotector 5.10 (installed with the recent DP patches)

even without any backup session running, rds is reporting at 100% cpu utilization. This is being monitored using glance. please advise. thanks

Re: rds at 100%CPU using glance

Hoefnix — Fri, 05 Mar 2004 02:51:03 GMT

Hi,

If no backups are running it sound to much, you can try to restart the proces, but also in our server (N4000), it take much CPU time 76% with backups running.

You should also see the process using top.

HTH,
Peter

Re: rds at 100%CPU using glance

Sanjiv Sharma_1 — Fri, 05 Mar 2004 02:51:55 GMT

Hi,

Please check the following links:
http://www.openview.hp.com/sso/ecare/getsupportdoc?docid=H555010568

Re: rds at 100%CPU using glance

Steve Steel — Fri, 05 Mar 2004 08:29:02 GMT

Hi

Sounds daft but I read that
maxfiles_lim higher than 32767 used to cause this.

Maybe you have the same problem.

What is you kernel configuration.

Steve Steel

Re: rds at 100%CPU using glance

Isralyn Manalac_1 — Mon, 08 Mar 2004 19:39:54 GMT

maxfiles_lim is set at 1024

Re: rds at 100%CPU using glance

Andre Braganca — Wed, 01 Dec 2004 06:51:56 GMT

Hello Isralyn Manalac,

I have exacty the same problem with DP5.1, but the HP-UX is version 11.0. It's been months now that some backups freeze for no apparent reason and the only clue is rds nearly at 100% CPU (using glance !). We've upgraded, patched and changed tape library without success.

You're not alone ...

Regards,
Andre'

Re: rds at 100%CPU using glance

Leif Halvarsson_2 — Wed, 01 Dec 2004 07:20:07 GMT

Hi,

Do you get a similar value with top ? This is a known "bug", the reported value is not correct. If you don't have any I/O activity when DP is idle you don't need to worry.

Re: rds at 100%CPU using glance

Dietmar Konermann — Wed, 01 Dec 2004 08:43:55 GMT

Leif is right. The problem is fixed with:

PHKL_29198:
( SR:8606297426 CR:JAGae60929 )
top(1) shows inflated CPU usage for a process with detached threads.

Best regards...
Dietmar.

Re: rds at 100%CPU using glance

Andre Braganca — Wed, 01 Dec 2004 12:34:53 GMT

using glance ...

Re: rds at 100%CPU using glance

Dietmar Konermann — Wed, 01 Dec 2004 14:52:10 GMT

Oooops, sorry. Correct... "using glance". Hmm, I'm not aware of any known HP-UX or Glance problem causing that.

Sounds more like a Raima DB problem then... rds looping in user space. Restarting DP should help for some time. However, patching DP could be of help also. Otherwise log a call with your local response center.

Best regards...
Dietmar.