[Gluster-users] Self Heal Sync Speed after 3.7.11 and small file performance

Kevin Lemonnier lemonnierk at ulrar.net
Fri May 6 15:49:12 UTC 2016


Yes, it works mostly fine but ofcourse it's quite slow.
We have PHP applications on it, as long as you enable APCu and OPCache,
it's pretty good.
As for the CPU usage I didn't notice anything of the sort, but maybe we
aren't talking about the same kind of usage.

On Fri, May 06, 2016 at 05:59:30PM +0300, Kayra Otaner | BilgiO wrote:
> Hello there,
> We've had serious CPU utilization issues with pre 3.7.9 GlusterFS, due to
> huge number of small files. CPU load was going up to 40-50 (on 32 core
> system) with nothing else running on it.
> We've observed multiple other Gluster users reporting similar issues, and
> waited for bug fix to be released. It seems like SHD freeze issue is
> resolved with 3.7.10 and now we're upgrading 3.7.11 however now we're
> observing very slow heal speed between nodes.
> I see people are mostly using Gluster for storage backend to OpenStack to
> house large VM images. I've used Gluster back in 2010, before RH purchase,
> but my use case had smaller number of files back then.
> Has anyone else have experience with hosting large number of small files on
> GlusterFS cluster ?
> Thank you
> -- 
> Kayra Otaner
> BilgiO A.Ş. -  SecOps Experts
> PGP KeyID : A945251E | Manager, Enterprise Linux Solutions
> www.bilgio.com |  TR +90 (532) 111-7240 x 1001 | US +1 (201) 206-2592

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Kevin Lemonnier
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