Messages in this thread | | | Subject | Re: Patch workqueue: create new slab cache instead of hacking | From | Eric Dumazet <> | Date | Wed, 21 Mar 2012 09:04:19 -0700 |
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On Wed, 2012-03-21 at 10:03 -0500, Christoph Lameter wrote: > On Wed, 21 Mar 2012, Eric Dumazet wrote: > > > Creating a dedicated cache for few objects ? Thats a lot of overhead, at > > least for SLAB (no merges of caches) > > Its some overhead for SLAB (a lot is what? If you tune down the per cpu > caches it should be a couple of pages) but its none for SLUB.
SLAB overhead per cache is O(CPUS * nr_node_ids) (unless alien caches are disabled)
For few in flight objects, its just better to use standard kmalloc-xxxx caches.
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