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.
Andrea
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This archive was generated by hypermail 2b29 : Fri Feb 28 2003 - 22:00:30 EST