From: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Kay Sievers <kay.sievers@vrfy.org>,
Greg Kroah-Hartman <gregkh@suse.de>,
LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>
Subject: Re: hackbench regression since 2.6.25-rc
Date: Fri, 14 Mar 2008 11:04:02 +0800 [thread overview]
Message-ID: <1205463842.3215.188.camel@ymzhang> (raw)
In-Reply-To: <Pine.LNX.4.64.0803131714130.22519@schroedinger.engr.sgi.com>
On Thu, 2008-03-13 at 17:16 -0700, Christoph Lameter wrote:
> Could you recompile the kernel with slub performance statistics and post
> the output of
>
> slabinfo -AD
Before testing with kernel 2.6.25-rc5:
Name Objects Alloc Free %Fast
vm_area_struct 2795 135185 132587 93 29
:0004096 25 119045 119043 99 98
:0000064 12257 119671 107742 98 50
:0000192 3312 78563 75370 92 21
:0000128 4648 48143 43738 97 53
dentry 15217 46675 31527 95 72
:0000080 12784 33674 21206 99 97
:0000016 4367 25871 23705 99 78
:0000096 3001 22591 20084 99 92
buffer_head 5536 18147 12884 97 42
anon_vma 1729 14948 14130 99 73
After testing:
Name Objects Alloc Free %Fast
:0000192 3428 80093958 80090708 92 8
:0000512 374 80016030 80015715 68 7
vm_area_struct 2875 224524 221868 94 20
:0000064 12408 134273 122227 98 47
:0004096 24 127397 127395 99 98
:0000128 4596 57837 53432 97 48
dentry 15659 51402 35824 95 64
:0000016 4584 29327 27161 99 76
:0000080 12784 33674 21206 99 97
:0000096 2998 26264 23757 99 93
So block 192 and 512's and very active and their fast free percentage is low.
-yanmin
next prev parent reply other threads:[~2008-03-14 3:07 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-13 7:46 hackbench regression since 2.6.25-rc Zhang, Yanmin
2008-03-13 8:48 ` Andrew Morton
2008-03-13 9:28 ` Zhang, Yanmin
2008-03-13 9:52 ` Andrew Morton
2008-03-14 0:16 ` Christoph Lameter
2008-03-14 3:04 ` Zhang, Yanmin [this message]
2008-03-14 3:30 ` Zhang, Yanmin
2008-03-14 5:28 ` Zhang, Yanmin
2008-03-14 6:39 ` Christoph Lameter
2008-03-14 7:29 ` Zhang, Yanmin
2008-03-14 21:05 ` Christoph Lameter
2008-03-14 6:34 ` Christoph Lameter
2008-03-14 7:23 ` Zhang, Yanmin
2008-03-14 21:06 ` Christoph Lameter
2008-03-17 7:50 ` Zhang, Yanmin
2008-03-17 17:32 ` Christoph Lameter
2008-03-18 3:28 ` Zhang, Yanmin
2008-03-18 4:07 ` Christoph Lameter
2008-03-14 6:32 ` Christoph Lameter
2008-03-14 7:14 ` Zhang, Yanmin
2008-03-14 21:08 ` Christoph Lameter
2008-03-15 0:15 ` Christoph Lameter
2008-03-17 3:35 ` Zhang, Yanmin
2008-03-17 17:27 ` Christoph Lameter
2008-03-17 3:05 ` Zhang, Yanmin
2008-03-13 15:14 ` Greg KH
2008-03-13 16:19 ` Randy Dunlap
2008-03-13 17:12 ` Greg KH
2008-03-14 0:50 ` Zhang, Yanmin
2008-03-14 5:01 ` Greg KH
2008-03-14 5:32 ` Zhang, Yanmin
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