Date: Thu, 14 Jan 2010 01:53:29 -0800
From: Arjan van de Ven <arjan@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, tglx@tglx.de, mingo@elte.hu,
       Cyrill Gorcunov <gorcunov@gmail.com>,
       Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH] timers: Introduce the concept of timer slack for legacy
 timers
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On Wed, 13 Jan 2010 22:07:55 -0800
Andrew Morton <akpm@linux-foundation.org> wrote:
> hm.
> 
> Have you any feeling for how much power this sort of thing saves?  I
> guess "change in interrupts per minute" would be easy to measure.

depends on what kind of system obviously. For a laptop, it's not all
that much, but for a cellphone it can be easily 30% to 40% extra
standby power.... a few wakeups per second already is a huge power
delta for those.


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
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