Date: Thu, 12 Jan 2006 08:52:15 +0100 From: Victor Balada Diaz <victor@bsdes.net> To: stable@freebsd.org Subject: Re: powerd effectiveness Message-ID: <20060112075214.GA769@pato.euesrg02.net> In-Reply-To: <43C5A261.1020407@rogers.com> References: <43C5A261.1020407@rogers.com>
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On Wed, Jan 11, 2006 at 07:27:13PM -0500, Mike Jakubik wrote: > It seems that powerd does very little in terms of reducing heat, and > sacrifices performance while doing so. Am i wrong to assume that > lowering the cpu's frequency should reduce consumed power, and therefore > reduce the amount of heat produced? I have tested with mbmon and i see > no difference between an idle system running with powerd at 75mhz, and > at full rate without. Also, while testing the speed of a php script, i > found myself refreshing it quickly in the browser to see the results of > the timers. I was getting sporadic results, on an otherwise idle system. > I noticed that if anything cpu intensive ran in the background, my > script would execute quicker. I disabled powerd and restored the > frequency, at this point i got more consistent results, and the script > would execute over 100msec faster. It seems like its not adjusting the > clock fast enough. Are these problems with powerd or just my hardware? > It is an old athlon system, running on the via133 chipset . I know that this is not what you're asking for, but anyway: You should try sysutils/fvcool, it will reduce de heat a lot and the performance will not suffer. -- La prueba mas fehaciente de que existe vida inteligente en otros planetas, es que no han intentado contactar con nosotros.
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