linux-kernel - Re: [PATCH 3/4] sched: drop group_capacity to 1 only if local group has extra capacity

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Date:	Fri, 15 Oct 2010 10:13:05 -0700
From:	Suresh Siddha <suresh.b.siddha@...el.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Nikhil Rao <ncrao@...gle.com>, Ingo Molnar <mingo@...e.hu>,
	Mike Galbraith <efault@....de>,
	Venkatesh Pallipadi <venki@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] sched: drop group_capacity to 1 only if local
 group has extra capacity

On Fri, 2010-10-15 at 10:05 -0700, Peter Zijlstra wrote:
> For regular balancing local_group will be the first, since we only
> ascend the domain tree on the local groups. But its not true for no_hz
> balancing afaikt.

Even for NOHZ, we always ascend each cpu's sched domain and the local
group is the first one always. But yes, we are depending on the local
group being the first group.

thanks,
suresh

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