From: Christoph Lameter <cl@linux-foundation.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: KOSAKI Motohiro <m-kosaki@ceres.dti.ne.jp>,
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>
Subject: Re: No, really, stop trying to delete slab until you've finished making slub perform as well
Date: Tue, 05 Aug 2008 09:59:18 -0500 [thread overview]
Message-ID: <48986AC6.5030406@linux-foundation.org> (raw)
In-Reply-To: <20080805210125.A897.KOSAKI.MOTOHIRO@jp.fujitsu.com>
KOSAKI Motohiro wrote:
>> Can you quantify the difference?
>
> machine spec:
> CPU: IA64 x 8
> MEM: 8G (4G x2node)
16k or 64k page size?
> procs -----------memory---------- ---swap-- -----io---- --system--
-----cpu------
> r b swpd free buff cache si so bi bo in cs us sy id wa st
> 2 0 0 3223168 6016 38336 0 0 0 0 3181 4314 0 15 85 0 0
> 2039 2 0 2022144 6016 38336 0 0 0 0 2364 13622 0 49 51 0 0
> 634 0 0 2629824 6080 38336 0 0 0 64 83582 2538927 5 95 0 0 0
> 596 0 0 2842624 6080 38336 0 0 0 0 6864 675841 6 94 0 0 0
> 590 0 0 2993472 6080 38336 0 0 0 0 9514 456085 6 94 0 0 0
> 503 0 0 3138560 6080 38336 0 0 0 0 8042 276024 4 96 0 0 0
>
> about 3G remain.
>
> <SLUB>
> procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
> r b swpd free buff cache si so bi bo in cs us sy id wa st
> 1066 0 0 323008 3584 18240 0 0 0 0 12037 47353 1 99 0 0 0
> 1101 0 0 324672 3584 18240 0 0 0 0 6029 25100 1 99 0 0 0
> 913 0 0 330240 3584 18240 0 0 0 0 9694 54951 2 98 0 0 0
>
> about 300M remain.
>
>
> So, about 2.5G - 3G difference in 8G mem.
Well not sure if that tells us much. Please show us the output of
/proc/meminfo after each run. The slab counters indicate how much memory is
used by the slabs.
It would also be interesting to see the output of the slabinfo command after
the slub run?
next prev parent reply other threads:[~2008-08-05 15:09 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
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 [this message]
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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