Re: [PATCH v4] sched: automated per session task groups

Peter Zijlstra
2010-11-29T17:38:05Z

On Mon, 2010-11-29 at 08:27 -0800, Linus Torvalds wrote:
> On Mon, Nov 29, 2010 at 3:53 AM, Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> >
> > Well we totally re-wrote the cgroup load-balancer in -tip. The thing
> > currently in -linus is a utter crap because its very strongly serialized
> > across all cores (some people spend like 25% of their time in there).
>
> Well, it seems that the rewrite is more crap than the "utter crap" in
> current -git. What does that make -tip? Super-utter-crap?
>
> Peter - getting the wrong answer quickly is not any better than strong
> serialization.

I know, from the testing so far we _thought_ it was fairly sane.
Apparently there's still some work to do.