From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261166AbVGYPzJ (ORCPT ); Mon, 25 Jul 2005 11:55:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261243AbVGYPzJ (ORCPT ); Mon, 25 Jul 2005 11:55:09 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.31.123]:54191 "EHLO atrey.karlin.mff.cuni.cz") by vger.kernel.org with ESMTP id S261166AbVGYPzH (ORCPT ); Mon, 25 Jul 2005 11:55:07 -0400 Date: Mon, 25 Jul 2005 17:53:22 +0200 From: Pavel Machek To: Marc Ballarin Cc: linux-kernel@vger.kernel.org Subject: Re: Power consumption HZ250 vs. HZ1000 Message-ID: <20050725155322.GA1046@openzaurus.ucw.cz> References: <20050725161333.446fe265.Ballarin.Marc@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050725161333.446fe265.Ballarin.Marc@gmx.de> User-Agent: Mutt/1.3.27i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > I did some measurements in order to compare power drain with HZ250 and > HZ1000. > To measure the actual drain, I used the "smart" battery's internal measurement. > (Available with acpi-sbs in /proc/acpi/sbs/SBS0/SB0/state.) > No clue how accurate this is. > > Here some battery details, in case someone knows: > charge reporting error: 25% > SB specification: v1.1 (with PEC) > manufacturer name: Panasonic > manufacture date: 2004-11-27 > device name: 02ZL > device chemistry: Lion > > Kernel: 2.6.13-rc3-mm1 + acpi-sbs > > CPU: > cpu family : 6 > model : 13 > model name : Intel(R) Pentium(R) M processor 1.60GHz > stepping : 6 > > The "ondemand" governor was running, using acpi_cpufreq. (Idle at 600MHz). > > Systems was running X11/KDE to get a more or less realistic scenario. No > cron jobs, network traffic or additional applications. WLAN and built-in > display were disabled completely, all fans and LEDs were off, internal hard > disc was running. Additional peripherals: external keyboard, mouse, display > and externally-powered hard disk (USB). USB devices prevent entering C3 and any interesting powersaving, try without USB... -- 64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms