Date: Tue, 4 Mar 2008 00:09:38 +0100
From: Andi Kleen <andi@firstfloor.org>
To: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
Cc: Pierre Ossman <drzeus-list@drzeus.cx>, Pavel Machek <pavel@ucw.cz>,
       Adam Belay <abelay@novell.com>, linux-pm@lists.linux-foundation.org,
       LKML <linux-kernel@vger.kernel.org>, Andi Kleen <andi@firstfloor.org>,
       Lee Revell <rlrevell@joe-job.com>
Subject: Re: [PATCH] cpuidle: avoid singing capacitors
Message-ID: <20080303230938.GA15255@one.firstfloor.org>
References: <20080303221752.5169f91d@mjolnir.drzeus.cx> <924EFEDD5F540B4284297C4DC59F3DEEA2E8B2@orsmsx423.amr.corp.intel.com>
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> But, with this patch:
> - we are penalizing good hardware and making them less power efficient
> to match the bad ones.

The question is how much it would be penalized. Most likely the penalty 
is very little. I would agree with Pierre's reasoning for enabling 
it by default: distributions will enable it anyways and it's better
to have the same defaults in the mainline kernel as with distros.

It might be worth researching a good default value though. Perhaps
it can be a lot shorter than the current one, lessing the penalty
even more?

-Andi
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