Re: [PATCH] Laptop-mode v7 for linux 2.6.1
From: Bart Samwel
Date: Mon Jan 12 2004 - 08:43:06 EST
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?
-- Bart
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