linux-kernel - Re: [RFC][PATCH 0/2] Quicklist is slighly problematic.

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Message-Id: <20080820.200852.193706487.davem@davemloft.net>
Date:	Wed, 20 Aug 2008 20:08:52 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	holt@....com
Cc:	cl@...ux-foundation.org, kosaki.motohiro@...fujitsu.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	akpm@...ux-foundation.org, tokunaga.keiich@...fujitsu.com
Subject: Re: [RFC][PATCH 0/2] Quicklist is slighly problematic.

From: Robin Holt <holt@....com>
Date: Wed, 20 Aug 2008 21:13:32 -0500

> One problem I see is somebody got rid of the node awareness.  We used
> to not put pages onto a quicklist when they were being released from a
> different node than the cpu is on.  Not sure where that went.  It was
> done because of the trap page problem described here.

NUMA awareness is one of the reasons I keep thinking about dropping
quicklist usage on sparc64.

Using SLAB/SLUB for the page table bits with appropriate constructor
and destructor bits ought to be able to approximate the gains
from avoiding the initialization for cached objects.
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