[Gluster-users] Performance issues with one node
mathieu.chateau at lotp.fr
Fri Jul 24 18:15:03 UTC 2015
gluster performance are not good with large number of small files. Recent
version do a better job with them, but not yet what I would enjoy.
As you are starting at gluster having an existing architecture, you should
first setup a lab to learn about it Else you will learn the hard way.
Don't play with turning off nodes, as you may create more issues than solve.
just my 2cents
2015-07-24 19:34 GMT+02:00 John Kennedy <skebi69 at gmail.com>:
> I am new to Gluster and have not found anything useful from my friend
> Google. I have not dealt with physical hardware in a few years (my last few
> jobs have been VM's and AWS based)
> I inherited a 4 node gluster configuration. There are 2 bricks, one is 9TB
> the other 11TB.
> The 11TB brick has a HUGE number of small files taking up only 1.3TB of
> the brick. For some reason, even a simple ls command can take hours to even
> start listing files. I removed a node by shutting down gluster on that
> node. The change in performance is dramatic. If I try and do ls on the 11TB
> brick on the downed node, I am still getting the slow response. I have
> narrowed the issue down to this one node as a result.
> When I start gluster on the bad node, glusterfsd hits over 1000%CPU use
> (The server has dual 8 core CPU's) and the load will jump to 25-30 within 5
> minutes. As such, I think this is a gluster issue and not a hardware issue.
> I am trying to not reinstall gluster yet.
> Is there something I am missing in my checks or will I need to reinstall
> gluster on that node?
> John Kennedy (_8(|)
> Sometimes it happens, sometimes it doesn't - Pedro Catacora
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> - urbandictionary.com
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> than everyone else. Basically - they're too stupid to know that they're
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