Re: CPU scheduler weirdness?

[Marton Balint]

On Fri, 4 Sep 2009, Ingo Molnar wrote:

> * Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
>
> > On Thu, 2009-09-03 at 23:57 +0200, Marton Balint wrote:
> > > > sched: fine-tune SD_MC_INIT:
> > > > 14800984706bf6936bbec5187f736e928be5c218
> > > >
> > > > If I add again the removed SD_BALANCE_NEWIDLE to flags, then everything works
> > > > as expected. So what would be the correct fix for this bug? Revert the patch?
> > > > Or just add SD_BALANCE_NEWIDLE to flags?
> > >
> > >
> > > Ingo, Peter, could any of you guys have a look at the commit
> > > that caused this bug? Is it OK to revert it? Or a fix somewhere
> > > else is necessary? I'm pushing this because I hope that this bug
> > > will get fixed in the upcoming stable kernel...
> >
> > I'm fine with re-adding SD_BALANCE_IDLE and SD_WAKE_IDLE on
> > SMT/MC/CPU levels.
> >
> > Ingo?
>
> Ok, agreed. I have re-benchmarked a couple of key workload and it
> seems like a good change, on top of your load-balancer fixes.
>
> Marton, could you please double check the latest -tip tree:
>
>  http://people.redhat.com/mingo/tip.git/README
>
> Does it resolve the problem?

Yes it does, thanks.

Regards,
  Marton
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/