Messages in this thread | | | Subject | Re: [PATCH 1/1] Implement shared page tables | From | Arjan van de Ven <> | Date | Wed, 31 Aug 2005 16:41:57 +0200 |
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> > Which is indeed a further disincentive against shared page tables. > > Or shared pagetables a disincentive to randomizing the mmap space ;-) > They're incompatible, but you could be left to choose one or the other > via config option. > > 3% on "a certain industry-standard database benchmark" (cough) is huge, > and we expect the benefit for PPC64 will be larger as we can share the > underlying hardware PTEs without TLB flushing as well. >
surely the benchmark people know that the database in question always mmaps the shared area at the address where the first one started it? (if not, could make it so ;)
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