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
Date: Thu, 14 Jan 2010 01:53:29 -0800 [thread overview]
Message-ID: <20100114015329.402f7b01@infradead.org> (raw)
In-Reply-To: <20100113220755.7ad6286f.akpm@linux-foundation.org>
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
prev parent reply other threads:[~2010-01-14 9:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-09 21:37 [PATCH] timers: Introduce the concept of timer slack for legacy timers Arjan van de Ven
2010-01-13 21:52 ` Andrew Morton
2010-01-14 5:45 ` Arjan van de Ven
2010-01-14 6:07 ` Andrew Morton
2010-01-14 9:53 ` Arjan van de Ven [this message]
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