Date: Wed, 06 Apr 2005 08:49:15 +0200 From: "Frank Behrens" <frank@pinky.sax.de> To: Bruno Ducrot <ducrot@poupinou.org> Cc: freebsd-hackers@freebsd.org Subject: Re: My experience with cpufreq in -STABLE Message-ID: <200504060649.j366nGQg021228@pinky.frank-behrens.de> In-Reply-To: <20050404171735.GR2298@poupinou.org> References: <200504041645.j34Gj2ow002999@pinky.frank-behrens.de>
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Bruno Ducrot <ducrot@poupinou.org> wrote on 4 Apr 2005 19:17: > You may start looking at src/usr.sbin/powerd in -current, and improve it > a bit? The actual algorithm used in powerd may need some rework IMHO. Which problems do you see? My comments: 1. If the frequency is raised it should not go down immediately on short idle phases. To raise the frequency the current idle value should used but to lower the frequency we should calculate a weighted idle average value. 2. The default polling time of 500 ms seems to be very short. It can increased to several seconds. Regards, Frank -- Frank Behrens, Osterwieck, Germany PGP-key 0x5B7C47ED on public servers available.
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