linux-kernel - Re: [GIT PULL] SLAB changes for v3.1-rc0

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Date:	Sun, 31 Jul 2011 19:12:59 +0300 (EEST)
From:	Pekka Enberg <penberg@...nel.org>
To:	Christoph Lameter <cl@...ux.com>
cc:	David Rientjes <rientjes@...gle.com>,
	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.

On Fri, 29 Jul 2011, Christoph Lameter wrote:
> 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.

They don't apply so please resend them.

 			Pekka
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