From: Christoph Lameter <cl@linux.com>
To: David Rientjes <rientjes@google.com>
Cc: Pekka Enberg <penberg@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [GIT PULL] SLAB changes for v3.1-rc0
Date: Fri, 29 Jul 2011 10:24:45 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1107291023000.16178@router.home> (raw)
In-Reply-To: <alpine.DEB.2.00.1107281514080.29344@chino.kir.corp.google.com>
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.
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next prev parent reply other threads:[~2011-07-29 15:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-22 8:08 Pekka Enberg
2011-07-25 6:55 ` Eric Dumazet
2011-07-28 10:40 ` Pekka Enberg
2011-07-28 10:04 ` Pekka Enberg
2011-07-28 13:47 ` Christoph Lameter
2011-07-28 22:22 ` David Rientjes
2011-07-29 15:24 ` Christoph Lameter [this message]
2011-07-31 16:12 ` Pekka Enberg
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