Date: Mon, 12 Jan 2004 21:32:13 +0800
From: Hugang <hugang@soulinfo.com>
To: Bart Samwel <bart@samwel.tk>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Laptop-mode v7 for linux 2.6.1
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On Mon, 12 Jan 2004 14:41:16 +0100
Bart Samwel <bart@samwel.tk> 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
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