From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Morton <akpm@zip.com.au>
Cc: lkml <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: 2.5.33-mm1
Date: Tue, 3 Sep 2002 17:40:28 -0700 [thread overview]
Message-ID: <20020904004028.GS888@holomorphy.com> (raw)
In-Reply-To: <3D7437AC.74EAE22B@zip.com.au>
On Mon, Sep 02, 2002 at 09:16:44PM -0700, Andrew Morton wrote:
> http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.33/2.5.33-mm1/
> Seven new patches - mostly just code cleanups.
> +slablru-speedup.patch
> A patch to improve slablru cpu efficiency. Ed is
> redoing this.
count_list() appears to be the largest consumer of cpu after this is
done, or so say the profiles after running updatedb by hand on
2.5.33-mm1 on a 900MHz P-III T21 Thinkpad with 256MB of RAM.
4608 __rdtsc_delay 164.5714
2627 __generic_copy_to_user 36.4861
2401 count_list 42.8750
1415 find_inode_fast 29.4792
1325 do_anonymous_page 3.3801
It also looks like there's either a bit of internal fragmentation or a
missing kmem_cache_reap() somewhere:
ext3_inode_cache: 20001KB 51317KB 38.97
dentry_cache: 4734KB 18551KB 25.52
radix_tree_node: 1811KB 1923KB 94.20
buffer_head: 1132KB 1378KB 82.12
It does stay quite a bit more nicely bounded than without slablru though.
Maybe it's old news. Just thought I'd try running a test on something tiny
for once. (new kbd/mouse config options were a PITA BTW)
Cheers,
Bill
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next prev parent reply other threads:[~2002-09-04 0:40 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-03 4:16 2.5.33-mm1 Andrew Morton
2002-09-04 0:40 ` William Lee Irwin III [this message]
2002-09-04 0:53 ` 2.5.33-mm1 Rik van Riel
2002-09-04 1:13 ` 2.5.33-mm1 Andrew Morton
2002-09-04 1:15 ` 2.5.33-mm1 William Lee Irwin III
2002-09-04 1:37 ` 2.5.33-mm1 Andrew Morton
2002-09-04 2:55 ` 2.5.33-mm1 Ed Tomlinson
2002-09-04 2:54 ` 2.5.33-mm1 William Lee Irwin III
2002-09-04 2:51 2.5.33-mm1 Ed Tomlinson
2002-09-04 3:33 ` 2.5.33-mm1 Andrew Morton
2002-09-04 19:25 ` 2.5.33-mm1 Stephen C. Tweedie
2002-09-04 20:18 ` 2.5.33-mm1 Andrew Morton
2002-09-04 9:06 2.5.33-mm2 Andrew Morton
2002-09-04 17:16 ` 2.5.33-mm1 Paul Larson
2002-09-04 18:02 ` 2.5.33-mm1 Andrew Morton
2002-09-04 20:07 ` 2.5.33-mm1 Paul Larson
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