Messages in this thread | | | Date | Mon, 2 Jan 2006 10:37:31 +0200 | From | Pekka Enberg <> | Subject | Re: [POLL] SLAB : Are the 32 and 192 bytes caches really usefull on x86_64 machines ? |
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On 12/28/05, Andreas Kleen <ak@suse.de> wrote: > I remember the original slab paper from Bonwick actually mentioned that > power of two slabs are the worst choice for a malloc - but for some reason Linux > chose them anyways.
Power of two sizes are bad because memory accesses tend to concentrate on the same cache lines but slab coloring should take care of that. So I don't think there's a problem with using power of twos for kmalloc() caches.
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