From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763383AbXGFQh3 (ORCPT ); Fri, 6 Jul 2007 12:37:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754124AbXGFQhQ (ORCPT ); Fri, 6 Jul 2007 12:37:16 -0400 Received: from mga07.intel.com ([143.182.124.22]:49773 "EHLO azsmga101.ch.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758818AbXGFQhP (ORCPT ); Fri, 6 Jul 2007 12:37:15 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.16,509,1175497200"; d="scan'208";a="247303138" Message-ID: <468E6F4C.8000601@linux.intel.com> Date: Fri, 06 Jul 2007 09:35:24 -0700 From: Arjan van de Ven User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: Chuck Ebbert CC: linux-kernel@vger.kernel.org Subject: Re: Liunx power consumption on laptops -- Enormous progress in the last few months References: <468D4D82.8030009@linux.intel.com> <468E6F0C.1090601@redhat.com> In-Reply-To: <468E6F0C.1090601@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Chuck Ebbert wrote: > On 07/05/2007 03:58 PM, Arjan van de Ven wrote: >> While it's hard to show "one size fits all" number/percentage, we took a >> bog standard Lenovo T61 laptop (no vendor preference, they just were the >> first one to deliver a model with the latest Intel chipset to our cubes) >> and measured the effect. The baseline we used was a 32 bit Fedora 7 >> installation; note that this already has the tickless kernel, but is >> lacking several of the key bugfixes that came afterwards. >> >> We've put our measurements in a graph at >> >> http://ww.linuxpowertop.org/results.php >> >> With kernel fixes and features, the power consumption of this laptop >> went from 21.06 Watts to 18.25 Watts; with 2 additional userspace fixes >> the power consumption ended up at 15.5 Watts. >> > > Where is the ondemand-fix.patch? I can't find any link to it. just click on it in the graph ;_ it's also http://www.linuxpowertop.org/patches/ondemand-fix.patch (which is submitted already to the maintainers)