[Users] Custom settings for Kernel Same-page Merging (KSM)?

[Martin Sivak]

Hi Frank,

we do not currently have anything in the engine that would allow you to do this. If you create an oVirt RFE bug for it it would make it easier for us to add the feature and track the progress.

However you can update the policy file you found to accomplish this. Just set (defvar ksm_sleep_ms_baseline 10) to a higher value and do not forget to properly restart VDSM when you do.

Regards

--
Martin Sivák
msivak at redhat.com
Red Hat Czech
RHEV-M SLA / Brno, CZ

----- Original Message -----
> Hi,
> 
> recently I've noticed that ksmd is using quite a lot CPU on
> my oVirt node. While I have plenty RAM, my CPU is way slow.
> Thus ksmd is eating up the most limited ressource here.
> 
> Is it supported to use custom settings for ksmd? I've noticed
> that it is handled by MoM: /etc/vdsm/mom.d/03-ksm.policy.
> May I just change some settings here, or is there a tuning
> parameter in oVirt engine? Couldn't find a matching one
> with engine-config.
> 
> I'd like to use a higher value for sleep_millisecs to reduce
> CPU usage (with the possible side effect of higher RAM usage).
> 
> 
> Thanks
> - Frank
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>