From: "Dieter Nützel" <Dieter.Nuetzel@hamburg.de>
To: Andrew Morton <andrewm@uow.edu.au>
Cc: Linux Kernel List <linux-kernel@vger.kernel.org>
Subject: Re: [patch] truncate_inode_pages
Date: Mon, 11 Jun 2001 04:22:45 +0200 [thread overview]
Message-ID: <20010611021437Z261385-17720+2631@vger.kernel.org> (raw)
> Daniel Phillips wrote:
> >
> > This is easy, just set the list head to the page about to be truncated.
>
> Works for me.
>
> --- linux-2.4.5/mm/filemap.c Mon May 28 13:31:49 2001
> +++ linux-akpm/mm/filemap.c Sun Jun 10 11:29:19 2001
> @@ -235,12 +235,13 @@
[snip]
Works for me 12 times faster on my Athlon 550 and ReiserFS.
System:
Athlon 550 (old one, 0.25 µm)
MSI MS-6167 Rev 1.0B (Irongate C4)
320 MB SDRAM PC100-2-2-2
AHA-2940UW
IBM DDYS-T18350N 18 GB (UW/U160)
Kernel 2.4.5-ac12
Glibc-2.2 (SuSE 7.1)
SunWave1>cat /proc/version
Linux version 2.4.5-ac12 (root@SunWave1) (gcc version 2.95.2 19991024
(release)) #1 Sat Jun 9 17:41:07 CEST 2001
SunWave1>time ./ftruncate
0.430u 54.790s 1:00.09 91.8% 0+0k 0+0io 32887pf+0w
With the mm/filemap.c fix:
SunWave1>cat /proc/version
Linux version 2.4.5-ac12 (root@SunWave1) (gcc version 2.95.2 19991024
(release)) #1 Sun Jun 10 22:49:07 CEST 2001
SunWave1>time ./ftruncate
0.220u 1.670s 0:05.13 36.8% 0+0k 0+0io 32852pf+0w
Thanks,
Dieter
next reply other threads:[~2001-06-11 2:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-11 2:22 Dieter Nützel [this message]
[not found] ` <200106112252.AAA19615@mail.bonn-fries.net>
[not found] ` <01061214324600.00879@starship>
2001-06-12 16:32 ` [patch] truncate_inode_pages Dieter Nützel
-- strict thread matches above, loose matches on Subject: below --
2001-06-09 15:51 Andrew Morton
2001-06-09 17:40 ` Alexander Viro
2001-06-09 22:53 ` Daniel Phillips
2001-06-10 1:31 ` Andrew Morton
2001-06-10 16:40 ` Daniel Phillips
2001-06-11 12:45 ` Andrew Morton
2001-06-11 13:13 ` Daniel Phillips
2001-06-11 13:28 ` Andrew Morton
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