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Date: Fri, 29 Jul 2011 10:24:45 -0500 (CDT) From: Christoph Lameter <cl@...ux.com> To: David Rientjes <rientjes@...gle.com> cc: Pekka Enberg <penberg@...nel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org, linux-mm@...ck.org Subject: Re: [GIT PULL] SLAB changes for v3.1-rc0 On Thu, 28 Jul 2011, David Rientjes wrote: > On Thu, 28 Jul 2011, Pekka Enberg wrote: > > > Christoph, your debugging fix has been in linux-next for few days now > > and no problem have been reported. I'm considering sending the series > > to Linus. What do you think? > > > > I ran slub/lockless through some stress testing and it seems to be quite > stable on my testing cluster. There is about a 2.3% performance > improvement with the lockless slowpath on the netperf benchmark with > various thread counts on my 16-core 64GB Opterons, so I'd recommend it to > be merged into 3.1. Great. Could you also test the next stage of patches (not yet even in Pekka's tree) where we add a per cpu cache of partial allocated slab pages? This decreases the per node lock contention further. I can repost the set if the old one does not work for you. Shows significant improvement here as well. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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