linux-kernel - Re: excessive wakeups in 2.6.35

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Message-Id: <1280980091.7508.5.camel@marge.simson.net>
Date:	Thu, 05 Aug 2010 05:48:11 +0200
From:	Mike Galbraith <efault@....de>
To:	Dave Jones <davej@...hat.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>, x86@...nel.org
Subject: Re: excessive wakeups in 2.6.35

On Wed, 2010-08-04 at 16:38 -0400, Dave Jones wrote:
> My laptop felt like it was about to burst into flames after I ran
> 2.6.35 on it for a while.  It actually got too hot to place on my legs.

Nomex + bigger battery :)

> Powertop showed it running over a 1000 wakeups a second while completely idle.
> 
> Chuck Ebbert pointed me at this diff..
> http://git.kernel.org/?p=linux/kernel/git/x86/linux-2.6-tip.git;a=commitdiff;h=396e894d289d69bacf5acd983c97cd6e21a14c08
> 
> which brings it back down to a much more respectable 80 wakeups a second.
> 
> Is this lined up for 2.6.35.1 ?

Yeah, it's tagged.  More trouble than it's worth, optimization dies.

	-Mike

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