Re: [POLL] SLAB : Are the 32 and 192 bytes caches really usefull on x86_64 machines ?

[Pekka Enberg]

On 12/28/05, Andreas Kleen <ak@xxxxxxx> 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.

                                   Pekka
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/