topic Re: hang watch tool n Linux in Operating System - Linux

hang watch tool n Linux

skt_skt — Wed, 13 Feb 2008 19:27:11 GMT

is any one using the tool called "hang watch" which works parallel to netdump and trigger a forced crash dump.. I heard that tool is independant of atchitecure.

I am using RHEL AS versions..

Re: hang watch tool n Linux

Matti_Kurkela — Sat, 16 Feb 2008 16:35:48 GMT

"Hang watch" is not a familiar term to me and Google does not seem to find anything useful about it either.

Do you mean the hangcheck timer?
It's a kernel feature. It can be either compiled-in to the kernel, or as a kernel module (named "hangcheck-timer").

If the hangcheck timer is enabled, you should see a message similar to this among the boot messages:

Hangcheck: starting hangcheck timer (tick is 60 seconds, margin is 180 seconds).

The hangcheck-timer was developed for Linux by Oracle. Here's some documentation on its use:
http://www.rampant-books.com/art_hunter_rac_oracle%20linux_hangcheck_kernel_module.htm

MK

Re: hang watch tool n Linux

skt_skt — Mon, 18 Feb 2008 00:47:10 GMT

This is the one i was talking about

http://people.redhat.com/astokes/hangwatch/