On Wed, 6 Feb 2008, KOSAKI Motohiro wrote:
> > Andrea Arcangeli has patches pending which change this to the RSS.
> > Specifically:
> >
> > http://marc.info/?l=linux-mm&m=119977937126925
>
> I agreed with you that RSS is better :)
>
>
>
> but..
> on many node numa, per zone rss is more better..
>
It depends on how your applications are taking advantage of NUMA
optimizations. If they're constrained by mempolicies to a subset of nodes
then the badness scoring isn't even used: the task that triggered the OOM
condition is the one that is automatically killed.
At this point, I think you're going to need to present an actual case
study where Andrea's patch isn't sufficient for selecting the appropriate
task on large NUMA machines.
David
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