linux-kernel - Re: Understanding I/O behaviour

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Message-ID: <9a8748490707051653q6e1b6bf3g9a3d6edf213867d9@mail.gmail.com>
Date:	Fri, 6 Jul 2007 01:53:07 +0200
From:	"Jesper Juhl" <jesper.juhl@...il.com>
To:	"Robert Hancock" <hancockr@...w.ca>
Cc:	knobi@...bisoft.de, linux-kernel@...r.kernel.org
Subject: Re: Understanding I/O behaviour

On 06/07/07, Robert Hancock <hancockr@...w.ca> wrote:
[snip]
>
> Try playing with reducing /proc/sys/vm/dirty_ratio and see how that
> helps. This workload will fill up memory with dirty data very quickly,
> and it seems like system responsiveness often goes down the toilet when
> this happens and the system is going crazy trying to write it all out.
>

Perhaps trying out a different elevator would also be worthwhile.

-- 
Jesper Juhl <jesper.juhl@...il.com>
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