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Message-ID: <1322049330.14799.43.camel@twins>
Subject: Re: [patch 4/7] sched: convert rq->avg_idle to rq->avg_event
From: Peter Zijlstra <peterz@infradead.org>
To: Mike Galbraith <mgalbraith@suse.de>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Ingo Molnar <mingo@elte.hu>, Paul Turner <pjt@google.com>
Date: Wed, 23 Nov 2011 12:55:30 +0100
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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?