[Lustre-discuss] High CPU load, only on 1 OSS

[Larry]

Reduce the oss_num_threads in modprobe.conf may be useful.

On Tue, Nov 16, 2010 at 10:38 PM, Ronald K Long <rklong at usgs.gov> wrote:
>
> We recently setup a lustre config.  1 MDS 4 OSS's.  Everything is running
> fine except on the first OSS we are experiencing very high cpu load.  The
> first OSS is running a CPU load in the high 50's.  The other 3 OSS's are
> steady at around 8.  Everything is the same between all of the OSS's.
>
> The stripe is setup
>
> stripe_count:   1 stripe_offset:  -1
>
> Red Hat 5 64bit
>
> kernel-2.6.18-194.3.1.el5_lustre.1.8.4
> kernel-devel-2.6.18-194.3.1.el5_lustre.1.8.4
> lustre-ldiskfs-3.1.3-2.6.18_194.3.1.el5_lustre.1.8.4
> lustre-1.8.4-2.6.18_194.3.1.el5_lustre.1.8.4
> lustre-modules-1.8.4-2.6.18_194.3.1.el5_lustre.1.8.4
>
>
> Any thing I can check on the problem OSS to rectify this issue.
>
> Thank you in advance
>
> Rocky
>
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