Messages in this thread | | | Date | Fri, 2 Aug 2002 20:32:10 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: large page patch (fwd) (fwd) |
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On Fri, 2 Aug 2002, David Mosberger wrote: > > The Rice people avoided some of the fragmentation problems by > pro-actively allocating a max-order physical page, even when only a > (small) virtual page was being mapped.
This probably works ok if - the superpages are only slightly smaller than the smaller page - superpages are a nice optimization.
> And since superpages quickly become > counter-productive in tight-memory situations anyhow, this seems like > a very reasonable approach.
Ehh.. The only people who are _really_ asking for the superpages want almost nothing _but_ superpages. They are willing to use 80% of all memory for just superpages.
Yes, it's Oracle etc, and the whole point for these users is to avoid having any OS memory allocation for these areas.
Linus
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