From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.genesippc.com (mithrandir.softwarenexus.net [66.98.186.96]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 9A23967A6D for ; Fri, 23 Jun 2006 23:59:04 +1000 (EST) From: "Matt Sealey" To: "'Jon Loeliger'" Subject: RE: cpu power "management" for non-dfs chips with no pmu (for instance, 750cxe and mpc7447 in pegasos) Date: Fri, 23 Jun 2006 08:58:56 -0500 Message-ID: <01ca01c696cd$2e453f30$99dfdfdf@bakuhatsu.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" In-Reply-To: Cc: linuxppc-dev@ozlabs.org Reply-To: matt@genesi-usa.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , I have nothing real to contribute other than I would like to see it :) Before I asked I checked Google (as is expected of anyone these days) and found some discussions on debian-powerpc from 2002 but nobody really did anything and nothing really came of it. I know 4 years later all we have is powernowd which pokes up cpufreq which only supports DFS and certain kinds of Mac PMU. ICTC is such a simple thing to support and you can slow down the CPU pretty comprehensively (from halving to 255x in theory) with an on and off flag. I am surprised nobody implemented a cpufreq governer even if it is totally useless and gives no perceivable benefits.. -- Matt Sealey Manager, Genesi, Developer Relations > -----Original Message----- > From: Jon Loeliger [mailto:jdl@jdl.com] > Sent: Friday, June 23, 2006 8:34 AM > To: matt@genesi-usa.com > Cc: linuxppc-dev@ozlabs.org > Subject: Re: cpu power "management" for non-dfs chips with no > pmu (for instance, 750cxe and mpc7447 in pegasos) > > So, like, the other day "Matt Sealey" mumbled: > > > > I am basically trying to evaluate if we can do ANYTHING to reduce > > power consumption of systems which are idle, as I have noticed that > > ... > > > > Comments? :) > > Hi Matt, > > There is an effort afoot to revitalize some of the Linux > Power Management issues, erm, currently going on over on the > linux-pm list these days. No immediate results (yet), but > there is some concerted effort. It should include some > PowerPC presence. > > Please feel free to contribute, of course. :-) > > jdl >