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Date: Tue, 25 Feb 2003 11:27:40 -0800
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Andrea Arcangeli <andrea@suse.de>,
       William Lee Irwin III <wli@holomorphy.com>,
       Andrew Morton <akpm@digeo.com>, Hanna Linder <hannal@us.ibm.com>,
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Subject: Re: Minutes from Feb 21 LSE Call
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> the only solution is to do rmap lazily, i.e. to start building the rmap
> during swapping by walking the pagetables, basically exactly like I
> refill the lru with anonymous pages only after I start to need this
> information recently in my 2.4 tree, so if you never need to pageout
> heavily several giga of ram (like most of very high end numa servers),
> you'll never waste a single cycle in locking or whatever other worthless
> accounting overhead that hurts performance of all common workloads

Did you see the partially object-based rmap stuff? I think that does
very close to what you want already.

M.

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