From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263544AbUBKGje (ORCPT ); Wed, 11 Feb 2004 01:39:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263564AbUBKGje (ORCPT ); Wed, 11 Feb 2004 01:39:34 -0500 Received: from [212.239.226.205] ([212.239.226.205]:50304 "EHLO precious.kicks-ass.org") by vger.kernel.org with ESMTP id S263544AbUBKGjb (ORCPT ); Wed, 11 Feb 2004 01:39:31 -0500 From: Jan De Luyck To: Jens Axboe Subject: Re: [PATCH] Laptop-mode v7 for linux 2.6.1 Date: Wed, 11 Feb 2004 07:24:18 +0100 User-Agent: KMail/1.5.4 Cc: Kiko Piris , Bart Samwel , linux-kernel@vger.kernel.org, Dax Kelson , Bartek Kania , Simon Mackinlay References: <3FFFD61C.7070706@samwel.tk> <200401131200.16025.lkml@kcore.org> <20040113110110.GA6711@suse.de> In-Reply-To: <20040113110110.GA6711@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200402110724.18676.lkml@kcore.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 13 January 2004 12:01, Jens Axboe wrote: > On Tue, Jan 13 2004, Jan De Luyck wrote: > > On Monday 12 January 2004 15:02, Jens Axboe wrote: > > > bo is accounted when io is actually put on the pending queue for the > > > disk, so they really do go hand in hand. So you should use block_dump > > > to find out why. > > > > It's nearly always reiserfs that causes the disk to spin up. Also, I'm > > seeting the harddisk led light up every 5-7 seconds :-( weird. > > Does 2.6 laptop mode patch even include the necessary reiser changes to > make this work properly? To followup on this: I've recently moved my entire installation to ext3 (I had to RMA the disk, tarred everything up, formatted another disk, put everything back but on ext3 this time), on which the laptopmode actually makes a difference. I can hear the disk spindown, and it stays that way for a reasonably long time (e.g. +- 10 minutes has happened). So there does seem to be a serious difference between the reiserfs commit option and the ext3 option. Just letting you folks know. Jan -- Baruch's Observation: If all you have is a hammer, everything looks like a nail.