[Gluster-users] (no subject)

[Mark Morlino]

I use the same Centos and Gluster versions and also see high load averages.
I'm not sure I can help but I can relate since I have similar problems.

How many virtual machine images do you have on one brick?

I started out putting several VM images on a single gluster volume and have
since started creating a dedicated volume for each VM. My thinking was that
each brick gets a single process on each peer and that having separate
processes would prevent VMs from having to compete for slices of a single
brick process. I have not experienced a noticeable difference between the
setups so it is quite possible that my hypothesis was incorrect.


What is the underlying hardware setup?

I noticed significant VM performance improvements when I reconfigured the
LVM LVs that backend my VM images from raid 1 to raid 10. High load average
did not go away but VMs behave normally now instead of really slowly.

How many CPU cores do you have? On my system, which is is a pair of ~5 year
old supermicro servers with 8 cores and 8 GB of memory I consistently see
load averages in the mid-20s. It's higher than I would like but the VMs
that use the storage are still running well.

-Mark


On Mon, Dec 2, 2013 at 5:30 AM, gandalf istari <erestor.elensar at gmail.com>wrote:

> I'm running version glusterfs 3.4.1 on a Centos 6.4
>
> now Load average: 3.37 3.41 3.29
>
>
>  the program that uses the most cpu:
> /usr/sbin/glusterfsd but several instances.
>
> The logs are not showing any errors.
>
>
> I have never used atop, but this looks like a problem
>
> LVM | s02-LogVol00 | busy     80% | read       0 | write   1166
>
> gr
>
>
> hi
> which version of gluster
> on which OS system version
> Did you run "top" (or even better "atop") to see which programm uses up
> how much resources (IO,RAM,CPU)?
> anything unusual in the logfiles?
>
>
> Am 02.12.2013 14:57:32, schrieb gandalf istari:
>
> Hi, I have two glusterfs server in replicated mode.
> brick one has my virtual machines and brick two server receives only the
> replicated parts.
>
> Now for the last 3 day's I get following message from my monitoring system.
>
> WARNING - load average: 6.04, 6.55, 6.07
>
> And the load sometime goes on for about 16 hours.
>
> For me this seems not to be normal, anyone some advice on this ?
>
> The load on brick one is not more the 1.8
>
>
> Thanks
>
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