From: "KOSAKI Motohiro" <m-kosaki@ceres.dti.ne.jp>
To: "Christoph Lameter" <cl@linux-foundation.org>
Cc: "Matthew Wilcox" <matthew@wil.cx>,
"Pekka Enberg" <penberg@cs.helsinki.fi>,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org, "Mel Gorman" <mel@skynet.ie>,
andi@firstfloor.org, "Rik van Riel" <riel@redhat.com>,
kosaki.motohiro@jp.fujitsu.com
Subject: Re: No, really, stop trying to delete slab until you've finished making slub perform as well
Date: Tue, 5 Aug 2008 01:47:42 +0900 [thread overview]
Message-ID: <2f11576a0808040947r69076eecv9ff92ecf583f7af2@mail.gmail.com> (raw)
In-Reply-To: <48970779.80902@linux-foundation.org>
Hi
> Could you address the performance issues in different ways? F.e. try to free
> when the object is hot or free from multiple processors? SLAB has to take the
> list_lock rather frequently under high concurrent loads (depends on queue
> size). That will not occur with SLUB. So you actually can free (and allocate)
> concurrently with high performance.
just information. (offtopic?)
When hackbench running, SLUB consume memory very largely than SLAB.
then, SLAB often outperform SLUB in memory stavation state.
I don't know why memory comsumption different.
Anyone know it?
next prev parent reply other threads:[~2008-08-04 16:47 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-10 2:21 [patch 00/19] Slab Fragmentation Reduction V13 Christoph Lameter
2008-05-10 2:21 ` [patch 01/19] slub: Add defrag_ratio field and sysfs support Christoph Lameter
2008-05-10 2:21 ` [patch 02/19] slub: Replace ctor field with ops field in /sys/slab/* Christoph Lameter
2008-05-10 2:21 ` [patch 03/19] slub: Add get() and kick() methods Christoph Lameter
2008-05-10 2:21 ` [patch 04/19] slub: Sort slab cache list and establish maximum objects for defrag slabs Christoph Lameter
2008-05-10 2:21 ` [patch 05/19] slub: Slab defrag core Christoph Lameter
2008-05-10 2:21 ` [patch 06/19] slub: Add KICKABLE to avoid repeated kick() attempts Christoph Lameter
2008-05-10 2:21 ` [patch 07/19] slub: Extend slabinfo to support -D and -F options Christoph Lameter
2008-05-10 2:21 ` [patch 08/19] slub/slabinfo: add defrag statistics Christoph Lameter
2008-05-10 2:21 ` [patch 09/19] slub: Trigger defragmentation from memory reclaim Christoph Lameter
2008-05-10 2:21 ` [patch 10/19] buffer heads: Support slab defrag Christoph Lameter
2008-05-10 2:21 ` [patch 11/19] inodes: Support generic defragmentation Christoph Lameter
2008-05-10 2:21 ` [patch 12/19] Filesystem: Ext2 filesystem defrag Christoph Lameter
2008-05-10 2:21 ` [patch 13/19] Filesystem: Ext3 " Christoph Lameter
2008-05-10 2:21 ` [patch 14/19] Filesystem: Ext4 " Christoph Lameter
2008-08-03 1:54 ` Theodore Tso
2008-08-13 7:26 ` Pekka Enberg
2008-05-10 2:21 ` [patch 15/19] Filesystem: XFS slab defragmentation Christoph Lameter
2008-08-03 1:42 ` Dave Chinner
2008-08-04 13:36 ` Christoph Lameter
2008-05-10 2:21 ` [patch 16/19] Filesystem: /proc filesystem support for slab defrag Christoph Lameter
2008-05-10 2:21 ` [patch 17/19] Filesystem: Slab defrag: Reiserfs support Christoph Lameter
2008-05-10 2:21 ` [patch 18/19] dentries: Add constructor Christoph Lameter
2008-05-10 2:21 ` [patch 19/19] dentries: dentry defragmentation Christoph Lameter
2008-08-03 1:58 ` No, really, stop trying to delete slab until you've finished making slub perform as well Matthew Wilcox
2008-08-03 21:25 ` Pekka Enberg
2008-08-04 2:37 ` Rene Herman
2008-08-04 21:22 ` Pekka Enberg
2008-08-04 21:41 ` Christoph Lameter
2008-08-04 23:09 ` Rene Herman
2008-08-04 13:43 ` Christoph Lameter
2008-08-04 14:48 ` Jamie Lokier
2008-08-04 15:21 ` Jamie Lokier
2008-08-04 16:35 ` Christoph Lameter
2008-08-04 15:11 ` Rik van Riel
2008-08-04 16:02 ` Christoph Lameter
2008-08-04 16:47 ` KOSAKI Motohiro [this message]
2008-08-04 17:13 ` Christoph Lameter
2008-08-04 17:20 ` Pekka Enberg
2008-08-05 12:06 ` KOSAKI Motohiro
2008-08-05 14:59 ` Christoph Lameter
2008-08-06 12:36 ` KOSAKI Motohiro
2008-08-06 14:24 ` Christoph Lameter
2008-08-13 10:46 ` KOSAKI Motohiro
2008-08-13 13:10 ` Christoph Lameter
2008-08-13 14:14 ` KOSAKI Motohiro
2008-08-13 14:16 ` Pekka Enberg
2008-08-13 14:31 ` Christoph Lameter
2008-08-13 15:05 ` KOSAKI Motohiro
2008-08-14 19:44 ` Christoph Lameter
2008-08-15 16:44 ` KOSAKI Motohiro
2008-08-15 18:24 ` Christoph Lameter
2008-08-15 19:42 ` Christoph Lameter
2008-08-18 10:08 ` KOSAKI Motohiro
2008-08-18 10:34 ` KOSAKI Motohiro
2008-08-18 14:08 ` Christoph Lameter
2008-08-19 10:34 ` KOSAKI Motohiro
2008-08-19 13:51 ` Christoph Lameter
2008-08-20 11:46 ` KOSAKI Motohiro
2008-08-14 7:15 ` Pekka Enberg
2008-08-14 14:45 ` Christoph Lameter
2008-08-14 15:06 ` Christoph Lameter
2008-08-04 17:19 ` Christoph Lameter
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