linux-kernel - Re: Disk schedulers

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Message-ID: <20080216161526.GH4269@ics.muni.cz>
Date:	Sat, 16 Feb 2008 17:15:26 +0100
From:	Lukas Hejtmanek <xhejtman@....muni.cz>
To:	Paulo Marques <pmarques@...popie.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Disk schedulers

On Fri, Feb 15, 2008 at 05:24:52PM +0000, Paulo Marques wrote:
> If you want to take advantage of all that memory to buffer disk writes,  
> so that the reads can proceed better, you might want to tweak your  
> /proc/sys/vm/dirty_ratio amd /proc/sys/vm/dirty_background_ratio to more  
> appropriate values. (maybe also dirty_writeback_centisecs and  
> dirty_expire_centisecs)

I don't feel like to have my whole memory eaten by a single file which is not
to be read again and thus it is pretty useless. Instead, I would like to see
slowdown of scp so that other processes can also access disk. Why is this
possible with kernel process scheduler and not with IO scheduler?

-- 
Lukáš Hejtmánek
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