linux-kernel - Re: Bug Report for Linux Kernel 3.x

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Message-ID: <CAFWT=80YV-+-COSfGnuDTSxqy17kgXCQpCVJD1b2yif_nM=1Yg@mail.gmail.com>
Date:	Wed, 24 Aug 2011 12:44:02 -0400
From:	Steevven1 <steevven1@...il.com>
To:	Anca Emanuel <anca.emanuel@...il.com>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: Bug Report for Linux Kernel 3.x

On Wed, Aug 24, 2011 at 11:52 AM, Anca Emanuel <anca.emanuel@...il.com> wrote:
> Hi all,
>
>
> Make sure you read this:
>
> Tweaks To Extend The Battery Life Of Intel Linux Notebooks
> http://www.phoronix.com/scan.php?page=article&item=intel_i915_power&num=1
>
> Linux 3.1 Kernel Draws More Power With Another Regression
> http://www.phoronix.com/scan.php?page=article&item=linux_31_power_regress&num=1
>

VERY interesting! The second link seems to imply that Phoronix has
independently found this same bug that we've been talking about in my
originally-linked ubuntuforums discussion. Specifically, the
interesting quote is:

"Besides the new Linux 3.1 kernel power regression, there's also a
power regression introduced in the Linux 3.0 kernel that has
previously not been talked about on Phoronix. The Linux 3.0 power draw
is up by 24% over the Linux 2.6.39 kernel."
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