On 01/09/2016 07:42 AM, Krutika Dhananjay wrote:
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*From: *"Ravishankar N" <[email protected]>
*To: *"Kyle Harris" <[email protected]>,
[email protected]
*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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