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<div class="moz-cite-prefix">On 01/09/2016 07:42 AM, Krutika
Dhananjay wrote:<br>
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Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Ravishankar
N" <a class="moz-txt-link-rfc2396E" href="mailto:ravishankar@redhat.com"><ravishankar@redhat.com></a><br>
<b>To: </b>"Kyle Harris" <a class="moz-txt-link-rfc2396E" href="mailto:kyle.harris98@gmail.com"><kyle.harris98@gmail.com></a>,
<a class="moz-txt-link-abbreviated" href="mailto:gluster-users@gluster.org">gluster-users@gluster.org</a><br>
<b>Sent: </b>Saturday, January 9, 2016 7:06:04 AM<br>
<b>Subject: </b>Re: [Gluster-users] High I/O And Processor
Utilization<br>
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<div class="moz-cite-prefix">On 01/09/2016 01:44 AM, Kyle
Harris wrote:<br>
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<p class="MsoNormal">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<sup>rd</sup> 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.</p>
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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.<br>
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-Ravi<br>
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[1] <a moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://blog.gluster.org/2015/12/introducing-shard-translator/"
target="_blank"
data-mce-href="http://blog.gluster.org/2015/12/introducing-shard-translator/">http://blog.gluster.org/2015/12/introducing-shard-translator/</a><br>
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<div>Kyle,<br>
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<div>I would recommend you to use glusterfs-3.7.6 if you intend
to try sharding, because it contains some crucial bug fixes.</div>
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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
(<a class="moz-txt-link-freetext" href="http://review.gluster.org/#/c/12479/">http://review.gluster.org/#/c/12479/</a>) that will only make it to
glusterfs-3.7.7. That way you'd get this fix and the sharding ones
too right away. <br>
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<div> -Krutika<br>
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