Re: CFS Bandwidth Control - Test results of cgroups tasks pinned vsunpinnede

[Srivatsa Vaddagiri]

* Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> [2011-09-13 20:19:55]:

> On Tue, 2011-09-13 at 23:24 +0530, Srivatsa Vaddagiri wrote:
> > We saw considerably high migration count on latest tip compared to
> > previous kernels. Kamalesh, can you please post the migration count
> > data? 
> 
> Hrmm, yes this looks horrid.. even without cgroup crap, something's funny.

Yes ..we could visualize that very much in top o/p .. A task's cpu would keep 
changing *every* screen refresh (refreshed every 0.5 sec that too!).

We didn't see that with older kernels ..Kamalesh is planning to do a
git bisect and see which commit lead to this "mad" hopping ..

- vatsa
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