Messages in this thread | | | Date | Mon, 20 Jun 2011 15:01:21 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [slub p2 0/4] SLUB: [RFC] Per cpu partial lists V2 |
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On Mon, 20 Jun 2011, Andi Kleen wrote:
> On Mon, Jun 20, 2011 at 10:32:44AM -0500, Christoph Lameter wrote: > > The following patchset applied on top of the lockless patchset V7. It > > introduces per cpu partial lists which allow a performance increase of > > around ~15 during contention for the nodelock (can be tested using > > hackbench). > > What size system did you test it on?
Sandybridge 4 core (8 cpus) 8G Ram.
> > These lists help to avoid per nodelocking overhead. Allocator latency > > could be further reduced by making these operations work without > > disabling interrupts (like the fastpath and the free slowpath) as well as > > implementing better ways of handling ther cpu array with partial pages. > > I think we really need better batching for the transfers.
Could you elaborate on that cryptic remark?
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