From: Christoph Lameter <cl@linux-foundation.org>
To: Nick Piggin <npiggin@suse.de>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
linux-mm@kvack.org, Matt Mackall <mpm@selenic.com>
Subject: Re: [S+Q 12/16] SLUB: Add SLAB style per cpu queueing
Date: Mon, 28 Jun 2010 05:19:23 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1006280513050.8725@router.home> (raw)
In-Reply-To: <20100626023200.GD29809@laptop>
On Sat, 26 Jun 2010, Nick Piggin wrote:
> > The SLAB scheme of not touching the object during management is adopted.
> > SLUB can now efficiently free and allocate cache cold objects.
>
> BTW. this was never the problem with SLUB, because SLQB didn't have
> the big performance regression on tpcc. SLUB IIRC had to touch more
> cachelines per operation.
Wish you were more detailed here. SLUB was designed for minimal cacheline
footprint and always had an edge there. AFACT SLQB was able to address
tpcc in some ways was because the issue with the hotpath on free was
addressed. These were issues with atomic ops on free not cache footprint.
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next prev parent reply other threads:[~2010-06-28 10:22 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-25 21:20 [S+Q 00/16] SLUB with Queueing beats SLAB in hackbench Christoph Lameter
2010-06-25 21:20 ` [S+Q 01/16] [PATCH] ipc/sem.c: Bugfix for semop() not reporting successful operation Christoph Lameter
2010-06-28 2:17 ` KAMEZAWA Hiroyuki
2010-06-28 16:45 ` Manfred Spraul
2010-06-28 23:58 ` KAMEZAWA Hiroyuki
2010-06-28 16:48 ` Pekka Enberg
2010-06-29 15:42 ` Christoph Lameter
2010-06-29 19:08 ` Andrew Morton
2010-06-30 19:38 ` Manfred Spraul
2010-06-30 19:51 ` Andrew Morton
2010-06-25 21:20 ` [S+Q 02/16] [PATCH 1/2] percpu: make @dyn_size always mean min dyn_size in first chunk init functions Christoph Lameter
2010-06-27 5:06 ` David Rientjes
2010-06-27 8:21 ` Tejun Heo
2010-06-27 16:57 ` [S+Q 02/16] [PATCH 1/2 UPDATED] " Tejun Heo
2010-06-27 19:25 ` David Rientjes
2010-06-27 19:24 ` [S+Q 02/16] [PATCH 1/2] " David Rientjes
2010-06-29 15:36 ` Christoph Lameter
2010-06-25 21:20 ` [S+Q 03/16] [PATCH 2/2] percpu: allow limited allocation before slab is online Christoph Lameter
2010-06-25 21:20 ` [S+Q 04/16] slub: Use a constant for a unspecified node Christoph Lameter
2010-06-28 2:25 ` KAMEZAWA Hiroyuki
2010-06-29 15:38 ` Christoph Lameter
2010-06-25 21:20 ` [S+Q 05/16] SLUB: Constants need UL Christoph Lameter
2010-06-26 23:31 ` David Rientjes
2010-06-28 2:27 ` KAMEZAWA Hiroyuki
2010-06-25 21:20 ` [S+Q 06/16] slub: Use kmem_cache flags to detect if slab is in debugging mode Christoph Lameter
2010-06-26 23:31 ` David Rientjes
2010-06-25 21:20 ` [S+Q 07/16] slub: discard_slab_unlock Christoph Lameter
2010-06-26 23:34 ` David Rientjes
2010-07-06 20:44 ` Christoph Lameter
2010-06-25 21:20 ` [S+Q 08/16] slub: remove dynamic dma slab allocation Christoph Lameter
2010-06-26 23:52 ` David Rientjes
2010-06-29 15:31 ` Christoph Lameter
2010-06-28 2:33 ` KAMEZAWA Hiroyuki
2010-06-29 15:41 ` Christoph Lameter
2010-06-30 0:26 ` KAMEZAWA Hiroyuki
2010-06-25 21:20 ` [S+Q 09/16] [percpu] make allocpercpu usable during early boot Christoph Lameter
2010-06-26 8:10 ` Tejun Heo
2010-06-26 23:53 ` David Rientjes
2010-06-29 15:15 ` Christoph Lameter
2010-06-29 15:30 ` Tejun Heo
2010-07-06 20:41 ` Christoph Lameter
2010-06-26 23:38 ` David Rientjes
2010-06-29 15:26 ` Christoph Lameter
2010-06-28 17:03 ` Pekka Enberg
2010-06-29 15:45 ` Christoph Lameter
2010-07-01 6:23 ` Pekka Enberg
2010-07-06 14:32 ` Christoph Lameter
2010-07-31 9:39 ` Pekka Enberg
2010-06-25 21:20 ` [S+Q 10/16] slub: Remove static kmem_cache_cpu array for boot Christoph Lameter
2010-06-27 0:02 ` David Rientjes
2010-06-29 15:35 ` Christoph Lameter
2010-06-25 21:20 ` [S+Q 11/16] slub: Dynamically size kmalloc cache allocations Christoph Lameter
2010-06-25 21:20 ` [S+Q 12/16] SLUB: Add SLAB style per cpu queueing Christoph Lameter
2010-06-26 2:32 ` Nick Piggin
2010-06-28 10:19 ` Christoph Lameter [this message]
2010-06-25 21:20 ` [S+Q 13/16] SLUB: Resize the new cpu queues Christoph Lameter
2010-06-25 21:20 ` [S+Q 14/16] SLUB: Get rid of useless function count_free() Christoph Lameter
2010-06-25 21:20 ` [S+Q 15/16] SLUB: Remove MAX_OBJS limitation Christoph Lameter
2010-06-25 21:20 ` [S+Q 16/16] slub: Drop allocator announcement Christoph Lameter
2010-06-26 2:24 ` [S+Q 00/16] SLUB with Queueing beats SLAB in hackbench Nick Piggin
2010-06-28 6:18 ` Pekka Enberg
2010-06-28 10:12 ` Christoph Lameter
2010-06-28 15:18 ` Pekka Enberg
2010-06-28 18:54 ` David Rientjes
2010-06-29 15:23 ` Christoph Lameter
2010-06-29 15:55 ` Mike Travis
2010-06-29 15:21 ` Christoph Lameter
2010-06-28 14:46 ` Matt Mackall
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