Re: [RFC][PATCH 1/5] sched, fair: Let minimally loaded cpu balancethe group

From: Suresh Siddha
Date: Thu May 03 2012 - 20:03:10 EST


On Wed, 2012-05-02 at 16:04 +0530, Srivatsa Vaddagiri wrote:
> * Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> [2012-05-02 12:31:30]:
>
> > > IOW :
> > >
> > > balance_load = 0 iff idle_cpu(i) ??
> >
> > I think so, even for !0 load_idx, load will only reach zero when we're
> > idle, just takes longer.
>
> Right ...so should we force it to select a idle_cpu by having
> balance_load = 0 for a idle cpu (ignoring what target_load(i, load_idx)
> told us as its load?

I think Peter is trying to find the leastly loaded among idle cpu's (in
other words the longest idle cpu ;)

should be ok, isn't it?

thanks,
suresh



--
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/