Re: [RFC tg_shares_up improvements - v1 00/12] [RFC tg_shares_up - v1 00/12] Reducing cost of tg->shares distribution

Balbir Singh
2010-10-17T12:17:24Z

* Peter Zijlstra <peterz@infradead.org> [2010-10-17 11:38:51]:

> On Sun, 2010-10-17 at 10:54 +0530, Balbir Singh wrote:
> >
> > The results do sound interesting, could I recommend that you try to
> > get 1000 cgroups or so, with half of them as active and half inactive.
> > I'd also suggest tracking system and user time at the cgroup level.
>
> Sure, but do keep in mind that 500 active cgroups will always utterly
> suck no matter what you do, it means we do indeed need to iterate 500
> cgroups for a lot of scheduler operations.
>

I agree in general, but in my case I've seen nasty things even when
the groups were empty.

--
Three Cheers,
Balbir