Date: Sun, 11 Jan 2004 07:16:29 +0100
From: Willy Tarreau <willy@w.ods.org>
To: Robert Love <rml@ximian.com>
Cc: jlnance@unity.ncsu.edu, linux-kernel@vger.kernel.org
Subject: Re: Laptops & CPU frequency
Message-ID: <20040111061629.GF545@alpha.home.local>
References: <20040111025623.GA19890@ncsu.edu> <1073791061.1663.77.camel@localhost>
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On Sat, Jan 10, 2004 at 10:17:41PM -0500, Robert Love wrote:
 
> You probably have some issue in your power management scripts - Fedora
> should scale the CPU speed back as soon as you remove AC power, not just
> at boot if not on AC.

I never understood why the speed depends on AC power (except to fake a long
autonomy). It would be smarter if it scaled the speed based on CPU usage.
It's what I did on my notebook (athlon 1.3G), and I'm happy to run it all
the day at 500 MHz and not to hear its stupid CPU fan dancing every minute,
and I too am happy to be able to compile a kernel in 3 minutes even on
battery, when it would take 10 min at 500 MHz and eat the battery much more,
since LCD and disk eat power during 7 more minutes.

Just my thought...

Cheers,
Willy

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