Subject: Re: [announce] Intel announces the PowerTOP utility for Linux
From: Arjan van de Ven <arjan@linux.intel.com>
To: Jan Engelhardt <jengelh@linux01.gwdg.de>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       linux-acpi@vger.kernel.org
In-Reply-To: <Pine.LNX.4.61.0705121256430.9570@yvahk01.tjqt.qr>
References: <4644F726.1050806@linux.intel.com>
	 <Pine.LNX.4.61.0705121256430.9570@yvahk01.tjqt.qr>
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Date: Sat, 12 May 2007 10:44:11 -0700
Message-Id: <1178991851.3591.0.camel@laptopd505.fenrus.org>
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On Sat, 2007-05-12 at 13:00 +0200, Jan Engelhardt wrote:
> On May 11 2007 16:07, Arjan van de Ven wrote:
> >
> > A typical Linux distribution has many components that wake the processor up
> > frequently for no good reason. In our testing with PowerTOP, we have seen many
> > cases where with some simple fixes, the battery life of typical laptops was
> > increased by one hour or more!
> >
> > We are providing fixes for several of the issues we identified, and we
> > encourage the Linux community to help us in this quest to get the maximum
> > battery life out of your (hopefully Intel based) laptops. Try the PowerTOP
> > tool, join the mailing list or the IRC channel and provide feedback, problem
> > reports or fixes!
> 
> Yeah, hal happily wakes up every two seconds. So much for
> the effectivity of NO_HZ.


The AN patches that Kristen posted a few days ago will fix this part of
hal for real... assuming you have hardware with AN support that is.

they are in -mm now... should go mainline in like 2.6.23

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