From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932318AbWFSU5U (ORCPT ); Mon, 19 Jun 2006 16:57:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932328AbWFSU5U (ORCPT ); Mon, 19 Jun 2006 16:57:20 -0400 Received: from isilmar.linta.de ([213.239.214.66]:61893 "EHLO linta.de") by vger.kernel.org with ESMTP id S932318AbWFSU5T (ORCPT ); Mon, 19 Jun 2006 16:57:19 -0400 Date: Mon, 19 Jun 2006 22:57:18 +0200 From: Dominik Brodowski To: Thomas Gleixner , len.brown@intel.com Cc: Con Kolivas , Ingo Molnar , LKML , Andrew Morton , john stultz Subject: ACPI C-States algorithm updates for dyn-tick Message-ID: <20060619205718.GA26332@isilmar.linta.de> Mail-Followup-To: Dominik Brodowski , Thomas Gleixner , len.brown@intel.com, Con Kolivas , Ingo Molnar , LKML , Andrew Morton , john stultz References: <1150643426.27073.17.camel@localhost.localdomain> <200606191521.05508.kernel@kolivas.org> <20060619122606.GA19451@elte.hu> <200606200003.26008.kernel@kolivas.org> <1150747611.29299.77.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1150747611.29299.77.camel@localhost.localdomain> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Mon, Jun 19, 2006 at 10:06:51PM +0200, Thomas Gleixner wrote: > On Tue, 2006-06-20 at 00:03 +1000, Con Kolivas wrote: > > Dominik donated a lot of code to use the dynticks infrastructure to actually > > implement the power savings. Just skipping ticks seemed to make very little > > power difference unless we also used the knowledge from next timer interrupt > > to know how long we are going to be idle and choose C state transitions > > accordingly. Each patch is documented at length in the split out > > > > C-States-1_bm_activity_improvements.patch > > C-States-2_bm_activity_handling_improvement.patch > > C-States-3_accounting_of_sleep_times.patch > > C-States-4_dyn-ticks_tweaks.patch > > > > http://ck.kolivas.org/patches/dyn-ticks/split-out/ > > Thanks for pointing that out. We'll look into those tomorrow. 1 to 3 were already submitted to Len, as they're useful already right now. (Len: do you want me to re-submit, as I can't find them in a git tree right now?) The fourth one is the only dyn-tick-specific one, and probably needs some more tweaking, testing and benchmarking. Dominik