[ovirt-users] memory leak in 3.5.6 - not vdsm

[Nir Soffer]

On Fri, Jan 22, 2016 at 9:25 PM, Charles Kozler <charles at fixflyer.com> wrote:
> Here is a screenshot of my three nodes and their increased memory usage over
> 30 days. Note that node #2 had 1 single VM that had 4GB of RAM assigned to
> it. I had since shut it down and saw no memory reclamation occur. Further, I
> flushed page caches and inodes and ran 'sync'. I tried everything but
> nothing brought the memory usage down. vdsm was low too (couple hundred MB)

Note that there is an old leak in vdsm, will be fixed in next 3.6 build:
https://bugzilla.redhat.com/1269424

> and there was no qemu-kvm process running so I'm at a loss
>
> http://imgur.com/a/aFPcK
>
> Please advise on what I can do to debug this. Note I have restarted node 2
> (which is why you see the drop) to see if it raises in memory use over tim
> even with no VM's running

Not sure what is "memory" that you show in the graphs. Theoretically this may be
normal memory usage, Linux using free memory for the buffer cache.

Can you instead show the output of "free", during one day, maybe run once
per hour?

You may also like to install sysstat for collecting and monitoring
resources usage.

>
> [compute[root at node2 log]$ rpm -qa | grep -i ovirt
> libgovirt-0.3.2-1.el6.x86_64
> ovirt-release35-006-1.noarch
> ovirt-hosted-engine-ha-1.2.8-1.el6.noarch
> ovirt-hosted-engine-setup-1.2.6.1-1.el6.noarch
> ovirt-engine-sdk-python-3.5.6.0-1.el6.noarch
> ovirt-host-deploy-1.3.2-1.el6.noarch
>
>
> --
>
> Charles Kozler
> Vice President, IT Operations
>
> FIX Flyer, LLC
> 225 Broadway | Suite 1600 | New York, NY 10007
> 1-888-349-3593
> http://www.fixflyer.com
>
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