[ovirt-users] vdsm memory consumption (ovirt 4.0)

[Nir Soffer]

On Wed, Aug 31, 2016 at 9:06 PM, Nir Soffer <nsoffer at redhat.com> wrote:

> On Wed, Aug 31, 2016 at 8:06 PM, Federico Alberto Sayd <fsayd at uncu.edu.ar>
> wrote:
>
>> Hello Nir:
>>
>>
>> I followed your instructions , added the config file, restarted vdsm, and
>> today I have the vdsm logs from a host:
>>
>> https://drive.google.com/file/d/0ByrwZ1AkYuyeR1hmRm90a1R6MEk
>> /view?usp=sharing
>>
>> Please tell me if you see anything related to the memory issue.
>>
>
> This logs start when vdsm is using 567640 kB (554 MiB) - very unusual.
>
> The memory usage grow by 18 MiB during one day. No garbage collection
> issues. This smells like we keep some data forever for no reason.
>
> $ grep rss= vdsm-leak.log | head -n 1
> Thread-33::DEBUG::2016-08-30 12:01:43,845::health::122::health::(_check_resources)
> user=1.73%, sys=1.65%, rss=567640 kB (+44), threads=57
>
>  $ grep rss= vdsm-leak.log | tail -n 1
> Thread-33::DEBUG::2016-08-31 13:00:36,913::health::122::health::(_check_resources)
> user=4.18%, sys=1.87%, rss=586584 kB (+0), threads=52
>
> I would like to see the logs since vdsm was started  - do you have them?
>
> Also, can you describe the workload on this hypervisor?
>
> - how many vms are running at the same time
> - how many vms are started and stopped per hour
> - using default vdsm.conf? if not, please attach your conf
>

I could reproduce similar leak in master - it seems that we leak about 1MiB
for each vm started and stopped.

I opened this bug:
https://bugzilla.redhat.com/1372205

Please check if this bug match your issue. If it does, please add
your logs and other info to this bug.

Thanks,
Nir
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