kjournald pegging cpu

Andreas Dilger adilger at clusterfs.com
Thu Jun 9 07:59:25 UTC 2005

On Jun 09, 2005  15:46 +0800, Christopher Chan wrote:
> kernel version 2.6.10-1.771_FC2smp
> We have had quite a few instances of kjournald pegging cpu and thereby 
> effectively knocking out the system's i/o.
> What can we do to provide more information so that the cause can be 
> identified and fixed?

When the problem hits use sysrq-t and/or sysrq-p on the console to dump
the stack of kjournald, as a starting point to see what it is doing.

Cheers, Andreas
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

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