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Subject: Re: [patch 4/7] sched: convert rq->avg_idle to rq->avg_event
From: Mike Galbraith <mgalbraith@suse.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
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Date: Wed, 23 Nov 2011 13:09:25 +0100
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On Wed, 2011-11-23 at 12:55 +0100, Peter Zijlstra wrote:
> On Tue, 2011-11-22 at 15:22 +0100, Mike Galbraith wrote:
> > We update rq->clock only at points of interest to the scheduler.
> > Using this distance has the same effect as measuring idle time
> > for idle_balance() throttling, and allows other uses as well. 
> 
> I'm not sure I follow, suppose we're happily context switching away, how
> is the avg distance between context switches related to idle time?

Average idle time can't be larger.

	-Mike