linux-kernel - Re: [v2 PATCH 0/4] timers: framework for migration between CPU

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Message-ID: <20090305161451.0da40645@infradead.org>
Date:	Thu, 5 Mar 2009 16:14:51 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	arun@...ux.vnet.ibm.com
Cc:	linux-kernel@...r.kernel.org, linux-pm@...ts.linux-foundation.org,
	a.p.zijlstra@...llo.nl, ego@...ibm.com, tglx@...utronix.de,
	mingo@...e.hu, andi@...stfloor.org, venkatesh.pallipadi@...el.com,
	vatsa@...ux.vnet.ibm.com, svaidy@...ux.vnet.ibm.com
Subject: Re: [v2 PATCH 0/4] timers: framework for migration between CPU

On Wed, 4 Mar 2009 17:42:49 +0530
Arun R Bharadwaj <arun@...ux.vnet.ibm.com> wrote:
> With the timers queued I measure the sleep state residency
> for a period of 10s.
> Next, I enable timer migration and measure the sleep state
> residency period.

is your table in seconds? Because realistically, at least on PC like
hardware, doing work to get sleep times over a 100 / 200 msecs or so
isn't going to save you any amount of measurable power anymore...



-- 
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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