Re: cpu scheduler merge plans

From: Siddha, Suresh B
Date: Wed Mar 22 2006 - 20:35:38 EST


On Thu, Mar 23, 2006 at 09:57:06AM +1100, kernel@xxxxxxxxxxx wrote:
> Quoting Andrew Morton <akpm@xxxxxxxx>:
> > #
> > # "strange load balancing problems": pwil3058@xxxxxxxxxxxxxx
> > sched-new-sched-domain-for-representing-multi-core.patch
> > sched-fix-group-power-for-allnodes_domains.patch
> > x86-dont-use-cpuid2-to-determine-cache-info-if-cpuid4-is-supported.patch

I'd like to see the three above patches in 2.6.17. Peters "strange load
balancing problems" seems to be a false alarm(this patch will have
minimal impact on a single core cpu because of domain degeneration..) and
doesn't happen on recent -mm kernels..

> >
> >
> > I'm not sure what the "Suresh had problems" comment refers to - perhaps a
> > now-removed patch.
>
> On previous versions of smp nice Suresh found some throughput issues. Peter has
> addressed these as far as I'm aware, but we really need Suresh to check all
> those again.

I am just back from vacation. I will soon review and provide feedback.

> >
> > afaik, the load balancing problem which Peter observed remains unresolved.
>
> That was a multicore enabled balancing problem which he reported went away on a
> later -mm.

thanks,
suresh
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