linux-kernel - Re: [PATCH] mm: swap prefetch improvements

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Date:	Tue, 22 May 2007 20:54:46 +1000
From:	Con Kolivas <kernel@...ivas.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Antonino Ingargiola <tritemio@...il.com>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Ray Lee <ray-lk@...rabbit.org>, ck list <ck@....kolivas.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] mm: swap prefetch improvements

On Tuesday 22 May 2007 20:46, Ingo Molnar wrote:
> It clearly should not consider 'itself' as IO activity. This suggests
> some bug in the 'detect activity' mechanism, agreed? I'm wondering
> whether you are seeing the same problem, or is all swap-prefetch IO on
> your system continuous until it's done [or some other IO comes
> inbetween]?

When nothing else is happening anywhere on the system it reads in bursts and 
goes to sleep during journal writeout.
 
-- 
-ck
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