From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261334AbVGGUlV (ORCPT ); Thu, 7 Jul 2005 16:41:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261373AbVGGUkv (ORCPT ); Thu, 7 Jul 2005 16:40:51 -0400 Received: from mx1.redhat.com ([66.187.233.31]:15592 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S261437AbVGGUk1 (ORCPT ); Thu, 7 Jul 2005 16:40:27 -0400 Date: Thu, 7 Jul 2005 16:40:17 -0400 From: Dave Jones To: st3@riseup.net Cc: linux-kernel@vger.kernel.org, cpufreq@lists.linux.org.uk Subject: Re: enhanced intel speedstep feature was Re: speedstep-centrino on dothan Message-ID: <20050707204017.GB29142@redhat.com> Mail-Followup-To: Dave Jones , st3@riseup.net, linux-kernel@vger.kernel.org, cpufreq@lists.linux.org.uk References: <20050706112202.33d63d4d@horst.morte.male> <42CC37FD.5040708@tmr.com> <20050706211159.GF27630@redhat.com> <20050706235557.0c122d33@horst.morte.male> <20050707220027.413343d4@horst.morte.male> <20050707200648.GA29142@redhat.com> <20050707222225.5b3113e0@horst.morte.male> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050707222225.5b3113e0@horst.morte.male> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 07, 2005 at 10:22:25PM +0200, st3@riseup.net wrote: > > This hasn't been seen to save any power whatsoever that I've seen. > > It drops down power rating by 1500-1800mW on my Toshiba Satellite A50 > while idling at 400MHz. > > > I've heard a few reports that it reduces heat for a few folks, but > > betting on it increasing your battery life is probably a push. > > Just a latest question: can be p4-clockmod used together with > speedstep-centrino? If not, would it make any sense to patch > speedstep-centrino to use this feature too? There was some discussion on cpufreq list long ago to make cpufreq drivers stackable, but it's never been a high enough priority for anyone to actually do the work. Dave