From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266184AbUALNvu (ORCPT ); Mon, 12 Jan 2004 08:51:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266185AbUALNvu (ORCPT ); Mon, 12 Jan 2004 08:51:50 -0500 Received: from [211.167.76.68] ([211.167.76.68]:34758 "HELO soulinfo.com") by vger.kernel.org with SMTP id S266184AbUALNvt (ORCPT ); Mon, 12 Jan 2004 08:51:49 -0500 Date: Mon, 12 Jan 2004 21:32:13 +0800 From: Hugang To: Bart Samwel , linux-kernel@vger.kernel.org Subject: Re: [PATCH] Laptop-mode v7 for linux 2.6.1 Message-Id: <20040112213213.6f507d13@localhost> In-Reply-To: <4002A3FC.3000000@samwel.tk> References: <3FFFD61C.7070706@samwel.tk> <200401121212.44902.lkml@kcore.org> <4002836A.8050908@samwel.tk> <200401121343.34688.lkml@kcore.org> <4002A3FC.3000000@samwel.tk> Organization: Beijing Soul X-Mailer: Sylpheed version 0.9.8claws (GTK+ 1.2.10; powerpc-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 12 Jan 2004 14:41:16 +0100 Bart Samwel wrote: > 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? Yes, I'm use reiserfs in 2.6.1 with laptop_mode patch. It works fine for me, I use cpudyn daemon to let spin download harddisk. In cpudyn.conf I changed TIMEOUT from 120 to 10. When i reading email/web, the harddisk can spin down for very long time (>3min). So you can try cpudynd. # TIMEOUT=120 TIMEOUT=10 # # Specified disks to spindown (comma separated devices) # # DISKS=/dev/hda,/dev/hdb DISKS=/dev/hda -- Hu Gang / Steve RLU# : 204016 [1999] (Registered Linux user) GPG Public Key: http://soulinfo.com/~hugang/HuGang.asc