26 Jun
2012
26 Jun
'12
10:33 a.m.
Jeff,
OSSV can do compression on its transfers. At high transfer speeds this could hog up the CPU. You can disable/enable this globally or for each OSSV relation separate.
Also In-line compression on the volume can cause a high load on the CPU at high transfer speeds. For the volume compression you could change it to post-processing.
--
Greetings,
Robin Mesotten
On Tue, Jun 26, 2012 at 1:48 AM, Jeff Cleverley
jeff.cleverley@avagotech.com wrote:
> Greetings,
>
> I'm running OSSV3.0 on some RH5.4 clients to a 6040 NearStore running
> 8.1 with 10G networking. The process works OK, but when I have an
> OSSV transfer running, the system load on the filer goes to 100%, it
> starts behaving very sluggishly, and the regular filer to NearStore
> backups start running very long, in some cases 2-3 days when they
> should complete in no more than 6 hours.
>
> I've gone through the installation and best practices guide and don't
> see anything about tuning the secondary. I've looked at sysstat
> during the load times and disk and network throughput are hardly above
> 60 MB/s. I know I can try throttling the backup, but it doesn't
> appear to be a throughput or bottleneck issue. Has anyone else seen
> this or is there anything I can do to help this?
>
> Thanks,
>
> Jeff
>
> --
> Jeff Cleverley
> Unix Systems Administrator
> 4380 Ziegler Road
> Fort Collins, Colorado 80525
> 970-288-4611
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