Messages in this thread | | | Date | Tue, 25 Feb 2003 21:30:01 +0100 | From | Andrea Arcangeli <> | Subject | Re: Minutes from Feb 21 LSE Call |
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On Tue, Feb 25, 2003 at 11:27:40AM -0800, Martin J. Bligh wrote: > > 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.
I don't see how it can optimize away the overhead but I didn't look at it for long.
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