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SubjectRe: Minutes from Feb 21 LSE Call
> 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.


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