From: "Pekka Enberg" <penberg@cs.helsinki.fi>
To: "Nick Piggin" <nickpiggin@yahoo.com.au>
Cc: "Matthew Wilcox" <matthew@wil.cx>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Wilcox, Matthew R" <matthew.r.wilcox@intel.com>,
chinang.ma@intel.com, linux-kernel@vger.kernel.org,
sharad.c.tripathi@intel.com, arjan@linux.intel.com,
andi.kleen@intel.com, suresh.b.siddha@intel.com,
harita.chilukuri@intel.com, douglas.w.styner@intel.com,
peter.xihong.wang@intel.com, hubert.nueckel@intel.com,
chris.mason@oracle.com, srostedt@redhat.com,
linux-scsi@vger.kernel.org,
"Andrew Vasquez" <andrew.vasquez@qlogic.com>,
"Anirban Chakraborty" <anirban.chakraborty@qlogic.com>,
"Christoph Lameter" <cl@linux-foundation.org>
Subject: Re: Mainline kernel OLTP performance update
Date: Mon, 19 Jan 2009 11:48:52 +0200 [thread overview]
Message-ID: <84144f020901190148r7ea135b6uead33842e93e59c2@mail.gmail.com> (raw)
In-Reply-To: <200901191933.29322.nickpiggin@yahoo.com.au>
Hi Nick,
On Mon, Jan 19, 2009 at 10:33 AM, Nick Piggin <nickpiggin@yahoo.com.au> wrote:
>> All I am saying is that I don't like how we're fixing a performance bug
>> with a shiny new allocator without a credible explanation why the
>> current approach is not fixable.
>
> To be honest, my biggest concern with SLUB is the higher order pages
> thing. But Christoph always poo poos me when I raise that concern, and
> it's hard to get concrete numbers showing real fragmentation problems
> when it can take days or months to start biting.
To be fair to SLUB, we do have the pending slab defragmentation
patches in my tree. Not that we have any numbers on if defragmentation
helps and how much. IIRC, Christoph said one of the reasons for
avoiding queues in SLUB is to be able to do defragmentation. But I
suppose with SLQB we can do the same thing as long as we flush the
queues before attempting to defrag.
Pekka
next prev parent reply other threads:[~2009-01-19 9:49 UTC|newest]
Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-13 21:10 Ma, Chinang
2009-01-13 22:44 ` Wilcox, Matthew R
2009-01-15 0:35 ` Andrew Morton
2009-01-15 1:21 ` Matthew Wilcox
2009-01-15 2:04 ` Andrew Morton
2009-01-15 2:27 ` Steven Rostedt
2009-01-15 7:11 ` Ma, Chinang
2009-01-19 18:04 ` Chris Mason
2009-01-19 18:37 ` Steven Rostedt
2009-01-19 18:55 ` Chris Mason
2009-01-19 19:07 ` Steven Rostedt
2009-01-19 23:40 ` Ingo Molnar
2009-01-15 2:39 ` Andi Kleen
2009-01-15 2:47 ` Matthew Wilcox
2009-01-15 3:36 ` Andi Kleen
2009-01-20 13:27 ` Jens Axboe
[not found] ` <588992150B702C48B3312184F1B810AD03A497632C@azsmsx501.amr.corp.intel.com>
2009-01-22 11:29 ` Jens Axboe
[not found] ` <588992150B702C48B3312184F1B810AD03A4F59632@azsmsx501.amr.corp.intel.com>
2009-01-27 8:28 ` Jens Axboe
2009-01-15 7:24 ` Nick Piggin
2009-01-15 9:46 ` Pekka Enberg
2009-01-15 13:52 ` Matthew Wilcox
2009-01-15 14:42 ` Pekka Enberg
2009-01-16 10:16 ` Pekka Enberg
2009-01-16 10:21 ` Nick Piggin
2009-01-16 10:31 ` Pekka Enberg
2009-01-16 10:42 ` Nick Piggin
2009-01-16 10:55 ` Pekka Enberg
2009-01-19 7:13 ` Nick Piggin
2009-01-19 8:05 ` Pekka Enberg
2009-01-19 8:33 ` Nick Piggin
2009-01-19 8:42 ` Nick Piggin
2009-01-19 8:47 ` Pekka Enberg
2009-01-19 8:57 ` Nick Piggin
2009-01-19 9:48 ` Pekka Enberg [this message]
2009-01-19 10:03 ` Nick Piggin
2009-01-16 20:59 ` Christoph Lameter
2009-01-16 0:27 ` Andrew Morton
2009-01-16 4:03 ` Nick Piggin
2009-01-16 4:12 ` Andrew Morton
2009-01-16 6:46 ` Nick Piggin
2009-01-16 6:55 ` Matthew Wilcox
2009-01-16 7:06 ` Nick Piggin
2009-01-16 7:53 ` Zhang, Yanmin
2009-01-16 10:20 ` Andi Kleen
2009-01-20 5:16 ` Zhang, Yanmin
2009-01-21 23:58 ` Christoph Lameter
2009-01-22 8:36 ` Zhang, Yanmin
2009-01-22 9:15 ` Pekka Enberg
2009-01-22 9:28 ` Zhang, Yanmin
2009-01-22 9:47 ` Pekka Enberg
2009-01-23 3:02 ` Zhang, Yanmin
2009-01-23 6:52 ` Pekka Enberg
2009-01-23 8:06 ` Pekka Enberg
2009-01-23 8:30 ` Zhang, Yanmin
2009-01-23 8:40 ` Pekka Enberg
2009-01-23 9:46 ` Pekka Enberg
2009-01-23 15:22 ` Christoph Lameter
2009-01-23 15:31 ` Pekka Enberg
2009-01-23 15:55 ` Christoph Lameter
2009-01-23 16:01 ` Pekka Enberg
2009-01-24 2:55 ` Zhang, Yanmin
2009-01-24 7:36 ` Pekka Enberg
2009-02-12 5:22 ` Zhang, Yanmin
2009-02-12 5:47 ` Zhang, Yanmin
2009-02-12 15:25 ` Christoph Lameter
2009-02-12 16:07 ` Pekka Enberg
2009-02-12 16:03 ` Pekka Enberg
2009-01-26 17:36 ` Christoph Lameter
2009-02-01 2:52 ` Zhang, Yanmin
2009-01-23 8:33 ` Nick Piggin
2009-01-23 9:02 ` Zhang, Yanmin
2009-01-23 18:40 ` care and feeding of netperf (Re: Mainline kernel OLTP performance update) Rick Jones
2009-01-23 18:51 ` Grant Grundler
2009-01-24 3:03 ` Zhang, Yanmin
2009-01-26 18:26 ` Rick Jones
2009-01-16 7:00 ` Mainline kernel OLTP performance update Andrew Morton
2009-01-16 7:25 ` Nick Piggin
2009-01-16 8:59 ` Nick Piggin
2009-01-16 18:11 ` Rick Jones
2009-01-19 7:43 ` Nick Piggin
2009-01-19 22:19 ` Rick Jones
2009-01-15 14:12 ` James Bottomley
2009-01-15 17:44 ` Andrew Morton
2009-01-15 18:00 ` Matthew Wilcox
2009-01-15 18:14 ` Steven Rostedt
2009-01-15 18:44 ` Gregory Haskins
2009-01-15 18:46 ` Wilcox, Matthew R
2009-01-15 19:44 ` Ma, Chinang
2009-01-16 18:14 ` Gregory Haskins
2009-01-16 19:09 ` Steven Rostedt
2009-01-20 12:45 ` Gregory Haskins
2009-01-15 19:28 ` Ma, Chinang
2009-01-15 16:48 ` Ma, Chinang
-- strict thread matches above, loose matches on Subject: below --
2010-01-25 18:26 Ma, Chinang
2009-05-04 15:54 Styner, Douglas W
2009-05-06 6:29 ` Anirban Chakraborty
2009-05-06 15:53 ` Wilcox, Matthew R
2009-05-06 18:05 ` Styner, Douglas W
2009-05-06 18:12 ` Wilcox, Matthew R
2009-05-06 18:24 ` Anirban Chakraborty
2009-05-06 19:25 ` Wilcox, Matthew R
2009-05-06 18:19 ` Styner, Douglas W
2009-04-28 17:22 Styner, Douglas W
2009-04-28 17:08 Styner, Douglas W
2009-04-29 7:29 ` Andrew Morton
2009-04-29 8:28 ` Andi Kleen
2009-04-29 16:00 ` Styner, Douglas W
2009-04-29 16:06 ` Wilcox, Matthew R
2009-04-29 16:19 ` Andi Kleen
2009-04-29 15:48 ` Styner, Douglas W
2009-04-29 16:07 ` Andrew Morton
2009-04-29 16:25 ` Peter Zijlstra
2009-04-29 17:46 ` Chris Mason
2009-04-29 18:06 ` Pallipadi, Venkatesh
2009-04-29 18:25 ` Styner, Douglas W
2009-04-29 17:52 ` Styner, Douglas W
2009-04-23 16:49 Styner, Douglas W
2009-04-27 7:02 ` Andi Kleen
2009-04-28 16:57 ` Chuck Ebbert
2009-04-28 17:15 ` James Bottomley
2009-04-28 17:17 ` Styner, Douglas W
2009-01-12 18:30 Ma, Chinang
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