Re: [PATCH][RFC] slub: increasing order reduces memory usage of somekey caches

From: Christoph Lameter
Date: Fri Jul 18 2008 - 13:14:49 EST

Richard Kennedy wrote:
> On Fri, 2008-07-18 at 09:55 -0500, Christoph Lameter wrote:
>> OK that is now 4215 pages before and 4112 after the patch? Yawn.... So barely any effect?
> Well it's not huge but there's another 100+ pages out of radix_tree,
> too. & I've not inspected the rest of the cache usage.

Can you post these numbers with the slabinfo for the radix tree as well? It may be that there are a lot of sparsely populated slab pages that waste memory.

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