Date: Tue, 07 Jul 2009 05:58:27 +0200 From: Aragon Gouveia <aragon@phat.za.net> To: Erich Dollansky <erich@apsara.com.sg> Cc: freebsd-current@freebsd.org, Rene Schickbauer <cavac@magicbooks.org> Subject: Re: RFC: powerd Patch & proposed future changes Message-ID: <4A52C7E3.4000304@phat.za.net> In-Reply-To: <200907070815.34876.erich@apsara.com.sg> References: <18510.213.150.228.38.1246864978.squirrel@mail.magicbooks.org> <200907070815.34876.erich@apsara.com.sg>
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Erich Dollansky wrote: > Yes, it makes sense that powerd is enabled to run external > programs triggered by events powerd has to monitor. > > I would not limit it to AC/DC changes. powerd could also run > external programs when falling below a certain speed and coming > back above a certain speed again. > > This would allow also to dim the LCD when less power is used > because notbody is using the screen. It might will not make sense > for most uses but for some. Can you think of a better example? LCD dimming can already by handled by Xorg's DPMS. And LCD dimming and CPU usage are not directly related. If I walk away from a port compiling, I don't want powerd to keep my LCD on because the CPU is at 100%. > powerd's main idea is to save energy. Allowing a second program to > parse through a file is not what will save energy. Neither will constant spawning of new processes. JMHO. Regards, Aragon
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