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Date: Wed, 24 Nov 2010 11:11:53 +0000
From: Bruce Cran <bruce@cran.org.uk>
To: Adam Vande More <amvandemore@gmail.com>
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Cc: David DEMELIER <demelier.david@gmail.com>, Ian Smith <smithi@nimnet.asn.au>,
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Subject: Re: How long laptop battery should live ?
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On Tue, 23 Nov 2010 23:17:37 -0600
Adam Vande More <amvandemore@gmail.com> wrote:

> IIRC, there where some improvement to HEAD while ago that increased
> FreeBSD power usage efficiecy a non-negligible amount.  Perhaps those
> improvements where MFC'd already, Google around either way as there
> are settings to tune which will decrease power consumption.

In order to get those savings you need to set hw.acpi.cpu.cx_lowest to
C2 or C3.

-- 
Bruce Cran