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Date: Wed, 19 Mar 2008 05:20:03 -0600 (MDT)
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To: rwatson@freebsd.org
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: arch@freebsd.org, phk@phk.freebsd.dk
Subject: Re: Power-Mgt
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In message: <20080318182358.F34016@fledge.watson.org>
            Robert Watson <rwatson@freebsd.org> writes:
: For example, on notebooks, can we sample an ACPI value before/after
: a benchmark, or do we really need to hook something up to the power
: supply in order to get a useful number?

The latter.  Many notebooks do not provide reasonable power usage.
They provide decent power drain at the moment statistics, but are too
noisy to be used in traditional benchmarks.

Warner