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

Itamar Heim iheim at redhat.com
Mon Nov 4 20:02:48 UTC 2013


On 11/04/2013 01:24 PM, Frank Wall wrote:
> Hi Martin,
>
> On 2013-11-04 11:12, Martin Sivak wrote:
>> 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.
>
> good advice, here we go:
> https://bugzilla.redhat.com/show_bug.cgi?id=1026294
>
> I wasn't sure if I should file a bug for vdsmd or ovirt-engine,
> so maybe someone needs to reclassify this PR.
>
>> 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.
>
> Thanks, I've already thought of doing this as a temporary workaround,
> but wanted to make sure that it's not customizable yet. So I'm going
> to hardcode my preferred value on next maintenance.

I'm more concerned by the fact ksm consumed RAM supposedly before memory 
usage was >80%.




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