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SubjectRe: [PATCH -v4 0/5] x86,smp: make ticket spinlock proportional backoff w/ auto tuning

* Mike Galbraith <bitbucket@online.de> wrote:

> On Fri, 2013-01-25 at 14:05 -0500, Rik van Riel wrote:
>
> > The performance issue observed with AIM7 is still a mystery.
>
> Hm. AIM7 mystery _may_ be the same crud I see on a 4 node 40
> core box. Stock scheduler knobs are too preempt happy, produce
> unstable results. I twiddle them as below to stabilize
> results.
>
> I'm testing a load balancing series from Alex Shi with AIM7
> and whatnot, added your series on top of it and retested.
> What I see is improvement.

Since we want both series that's good news, agreed?

Thanks,

Ingo


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