From: Andi Kleen <andi@firstfloor.org>
To: David Rientjes <rientjes@google.com>
Cc: Ezequiel Garcia <elezegarcia@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, Tim Bird <tim.bird@am.sony.com>,
celinux-dev@lists.celinuxforum.org
Subject: Re: [Q] Default SLAB allocator
Date: Thu, 11 Oct 2012 16:10:40 -0700 [thread overview]
Message-ID: <m2391ktxjj.fsf@firstfloor.org> (raw)
In-Reply-To: <alpine.DEB.2.00.1210111558290.6409@chino.kir.corp.google.com> (David Rientjes's message of "Thu, 11 Oct 2012 15:59:19 -0700 (PDT)")
David Rientjes <rientjes@google.com> writes:
> On Thu, 11 Oct 2012, Andi Kleen wrote:
>
>> > While I've always thought SLUB was the default and recommended allocator,
>> > I'm surprise to find that it's not always the case:
>>
>> iirc the main performance reasons for slab over slub have mostly
>> disappeared, so in theory slab could be finally deprecated now.
>>
>
> SLUB is a non-starter for us and incurs a >10% performance degradation in
> netperf TCP_RR.
When did you last test? Our regressions had disappeared a few kernels
ago.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
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next prev parent reply other threads:[~2012-10-11 23:11 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-11 14:19 Ezequiel Garcia
2012-10-11 22:42 ` Andi Kleen
2012-10-11 22:59 ` David Rientjes
2012-10-11 23:10 ` Andi Kleen [this message]
2012-10-12 12:07 ` Ezequiel Garcia
2012-10-13 9:54 ` David Rientjes
2012-10-13 12:44 ` Ezequiel Garcia
2012-10-16 0:46 ` David Rientjes
2012-10-16 12:35 ` Ezequiel Garcia
2012-10-16 12:56 ` Eric Dumazet
2012-10-16 18:07 ` Tim Bird
2012-10-16 18:27 ` Ezequiel Garcia
2012-10-16 18:44 ` Tim Bird
2012-10-16 18:49 ` Ezequiel Garcia
2012-10-16 19:16 ` Eric Dumazet
2012-10-17 18:45 ` Tim Bird
2012-10-17 19:13 ` Eric Dumazet
2012-10-17 19:20 ` Shentino
2012-10-17 20:33 ` Tim Bird
2012-10-18 0:46 ` Shentino
2012-10-17 20:58 ` Tim Bird
2012-10-17 21:05 ` Ezequiel Garcia
2012-10-16 18:36 ` Ezequiel Garcia
2012-10-16 18:54 ` Christoph Lameter
2012-10-13 9:51 ` David Rientjes
2012-10-13 15:10 ` Eric Dumazet
2012-10-16 1:28 ` JoonSoo Kim
2012-10-16 7:23 ` Eric Dumazet
2012-10-19 0:03 ` JoonSoo Kim
2012-10-19 7:01 ` Eric Dumazet
2012-10-16 0:45 ` David Rientjes
2012-10-16 18:53 ` Christoph Lameter
2012-10-16 19:02 ` Christoph Lameter
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