Messages in this thread |  | | | Date | Tue, 13 Dec 2005 14:23:46 -0800 | | From | Paul Jackson <> | | Subject | Re: [PATCH] Cpuset: rcu optimization of page alloc hook |
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Eric wrote: > struct kmem_cache itself will be about 512*8 + some bytes > then for each cpu a 'struct array_cache' will be allocated (count 128 bytes
Hmmm ... 'struct array_cache' looks to be about 6 integer words, so if that is the main per-CPU cost, the minimal cost of a slab cache (once created, before use) is about 24 bytes per cpu.
But whether its 24 or 128 bytes per cpu, that's a heavier weight hammer than is needed here.
Time for me to learn more about rcu.
Thanks for raising this issue.
-- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <pj@sgi.com> 1.925.600.0401 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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