From owner-freebsd-acpi@FreeBSD.ORG Sat Dec 11 02:56:10 2004 Return-Path: Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B8E8316A4CE for ; Sat, 11 Dec 2004 02:56:10 +0000 (GMT) Received: from otter3.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1516A43D55 for ; Sat, 11 Dec 2004 02:56:10 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from [192.168.42.22] (andersonbox2.centtech.com [192.168.42.22]) by otter3.centtech.com (8.12.3/8.12.3) with ESMTP id iBB2u6OJ089244; Fri, 10 Dec 2004 20:56:07 -0600 (CST) (envelope-from anderson@centtech.com) Message-ID: <41BA61C6.9080903@centtech.com> Date: Fri, 10 Dec 2004 20:56:06 -0600 From: Eric Anderson User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.3) Gecko/20041110 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Yann Berthier References: <20041211014613.GK695@hsc.fr> In-Reply-To: <20041211014613.GK695@hsc.fr> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: freebsd-acpi@freebsd.org Subject: Re: suspend status X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 11 Dec 2004 02:56:11 -0000 Yann Berthier wrote: > Hi gang, > > My IBM T41 suspend / resume well (-CURRENT from the 12/3): screen > goes black, every activity seems stopped, resume like a champ (i'm > not sure that champs resume either) > > but battery goes down as if it where not suspended: > > Remaining battery life: 99% > Remaining battery time: 3:18:00 > [yb@taz 19:00]% sudo zzz > > After resuming: > > Remaining battery life: 80% > Remaining battery time: 2:00:00 > [yb@taz 20:29]% > > I know the remaining battery time is not an accurate measure, but all > in one I stay suspended 1h30, and my battery 'lost' 1h20 of power - > so it says > Refigure your math - if 100% cpu means 3hrs 18 minutes of runtime left, then that about 200 minutes of runtime. So 1% equals 2 minutes of runtime roughly. So, you suspend - and wait up 90 minutes later. If it would have been running like normal, it would eat up 1% per 2 minutes, so about 45% of your battery - but it didn't, it only ate up 20%. So ath that rate, it was using less than half the power as when in non-suspend mode. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology When in doubt, mumble; when in trouble, delegate; when in charge, ponder ------------------------------------------------------------------------