linux-kernel - Re: [patch 05/19] split LRU lists into anon & file sets

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Message-ID: <20080131054819.6be037f8@riellaptop.surriel.com>
Date:	Thu, 31 Jan 2008 05:48:19 -0500
From:	Rik van Riel <riel@...hat.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	kosaki.motohiro@...fujitsu.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [patch 05/19] split LRU lists into anon & file sets

On Thu, 31 Jan 2008 10:17:48 +0900
KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> wrote:

> on my test environment, my patch solve incorrect OOM.
> because, too small reclaim cause OOM.

That makes sense.

The version you two are looking at can return
"percentages" way larger than 100 in get_scan_ratio.

A fixed version of get_scan_ratio, where the
percentages always add up to 100%, makes the
system go OOM before it seriously starts
swapping.

I will integrate your fixes with my code when I
get back from holidays.  Then things should work :)

Thank you for your analysis of the problem.
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