[Gluster-users] High I/O And Processor Utilization

[Ravishankar N]

On 01/09/2016 07:42 AM, Krutika Dhananjay wrote:
>
>
> ------------------------------------------------------------------------
>
>     *From: *"Ravishankar N" <ravishankar at redhat.com>
>     *To: *"Kyle Harris" <kyle.harris98 at gmail.com>,
>     gluster-users at gluster.org
>     *Sent: *Saturday, January 9, 2016 7:06:04 AM
>     *Subject: *Re: [Gluster-users] High I/O And Processor Utilization
>
>     On 01/09/2016 01:44 AM, Kyle Harris wrote:
>
>         It’s been a while since I last ran GlusterFS so I thought I
>         might give it another try here at home in my lab.  I am using
>         the 3.7 branch on 2 systems with a 3^rd being an arbiter
>         node.  Much like the last time I tried GlusterFS, I keep
>         running into issues with the glusterfsd process eating up so
>         many resources that the systems sometimes become all but
>         unusable.  A quick Google search tells me I am not the only
>         one to run into this issue but I have yet to find a cure.  The
>         last time I ran GlusterFS, it was to host web sites and I just
>         chalked the problem up to a large number of small files.  This
>         time, I am using it to host VM’s and there are only 7 of them
>         and while they are running, they are not doing anything else.
>
>
>     The performance improvements for self-heal are still a
>     (stalled_at_the_moment)-work-in-progress. But for VM use cases,
>     you can turn on sharding [1], which will drastically reduce data
>     self-heal time.  Why don't you give it a spin on your lab setup
>     and let us know how it goes? You might have to create the VMs
>     again though since only the files that are created after enabling
>     the feature will be sharded.
>
>     -Ravi
>
>     [1] http://blog.gluster.org/2015/12/introducing-shard-translator/
>
>
> Kyle,
> I would recommend you to use glusterfs-3.7.6 if you intend to try 
> sharding, because it contains some crucial bug fixes.
>

If you're trying arbiter, it would be good if you can compile the 3.7 
branch and use it since it has an important fix 
(http://review.gluster.org/#/c/12479/) that will only make it to 
glusterfs-3.7.7. That way you'd get this fix and the sharding ones too 
right away.

> -Krutika
>
>
>
>
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