From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266159AbUALRId (ORCPT ); Mon, 12 Jan 2004 12:08:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266193AbUALRId (ORCPT ); Mon, 12 Jan 2004 12:08:33 -0500 Received: from mailgate5.cinetic.de ([217.72.192.165]:5605 "EHLO mailgate5.cinetic.de") by vger.kernel.org with ESMTP id S266159AbUALRIT (ORCPT ); Mon, 12 Jan 2004 12:08:19 -0500 Date: Mon, 12 Jan 2004 18:07:44 +0100 Message-Id: <200401121707.i0CH7iQ11796@mailgate5.cinetic.de> MIME-Version: 1.0 Organization: http://freemail.web.de/ From: "Kai Krueger" To: "BartSamwel" Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH] Laptop-mode v7 for linux 2.6.1 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Bart Samwel schrieb am 12.01.04 14:47:20: > > Jan De Luyck wrote: > >>2. Stop klogd, do "echo 1 > /proc/sys/vm/block_dump" and see which > >>process keeps your disk spun up using dmesg. > > > > Welll.... i see no READs, and the writes i see is spamd, kmail, pdflush, > > reiserfs/0. > > How are the WRITEs grouped, are they grouped together or do they seem to > occur more evenly spaced? When you use "sync", how long until the next > WRITE? What are the values of /proc/sys/vm/dirty_expire_centisecs and > /proc/sys/vm/dirty_writeback_centisecs? Are you sure you are running a > kernel that supports the commit= option with reiserfs? (This option was > added in 2.6.1.) > > I've never tested laptop mode with reiserfs BTW, does anybody else here > have experience with laptop mode and reiserfs? I'm currently trying kernel 2.6.1-mm1 with laptop-mode on a reiserfs partition. If I kill all daemons running on the system and do nothing with it, I can achieve the 10 minutes spin down time I had expected from laptop-mode. However as soon as I start up X with KDE I get regular spin ups every 30 seconds. Looking at the output of "echo 1 > /proc/sys/vm/block_dump", I see an entry every 30 seconds of "kdeinit(15145): WRITE block 65680 on hda1" followed by a whole load of "reiserfs/0(12): dirtied page" and "reisers/0(12): WRITE block XXXXX on hda1". Due to the regular 30 second interval writes of kdeinit: kded to block 65680, laptop-mode is not particularly usable on this system. Is this a problem with reiserfs or with kde and is there any fix available? > > -- Bart Kai ______________________________________________________________________________ Erdbeben im Iran: Zehntausende Kinder brauchen Hilfe. UNICEF hilft den Kindern - helfen Sie mit! https://www.unicef.de/spe/spe_03.php