From: Oleg Drokin <green@namesys.com>
To: Szakacsits Szabolcs <szaka@sienet.hu>
Cc: Dieter N?tzel <Dieter.Nuetzel@hamburg.de>,
Chris Mason <mason@suse.com>,
Marc-Christian Petersen <m.c.p@gmx.net>,
reiserfs-list@namesys.com,
Philippe Gramoull? <philippe.gramoulle@mmania.com>
Subject: Re: Horrible ftruncate performance
Date: Sun, 13 Jul 2003 16:58:04 +0400 [thread overview]
Message-ID: <20030713125804.GB6061@namesys.com> (raw)
In-Reply-To: <Pine.LNX.4.30.0307120213080.30730-100000@divine.city.tvnet.hu>
Hello!
On Sat, Jul 12, 2003 at 03:37:48AM +0200, Szakacsits Szabolcs wrote:
> Footnotes:
> (*) So disk shouldn't matter because the other filesystems use only 4kB to
> store this 200GB sparse file. ReiserFS wastes 201MB! One could
Yes. The thing is reiserfs prepopulates the tree with empty pointers
up to needed file length. Others just increase filesize.
We found out that just increasing filesize leads to races later on
when two parallel writers try to actually write somewhere
past the real file end. Then we endup in a situation where
same stuff in the tree is about to be inserted twice which
is bad idea of course.
Bye,
Oleg
next prev parent reply other threads:[~2003-07-13 12:58 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-10 3:23 Horrible ftruncate performance Szakacsits Szabolcs
2003-07-10 5:29 ` Oleg Drokin
2003-07-10 7:30 ` Szakacsits Szabolcs
2003-07-10 9:21 ` Oleg Drokin
2003-07-10 8:17 ` Szakacsits Szabolcs
2003-07-10 10:01 ` Oleg Drokin
2003-07-10 14:01 ` Szakacsits Szabolcs
2003-07-10 15:44 ` Oleg Drokin
2003-07-11 14:35 ` Dieter Nützel
2003-07-11 14:49 ` Oleg Drokin
2003-07-11 15:16 ` Dieter Nützel
2003-07-11 15:24 ` Oleg Drokin
2003-07-11 15:27 ` Dieter Nützel
2003-07-11 15:32 ` Oleg Drokin
2003-07-11 15:35 ` Dieter Nützel
2003-07-11 15:32 ` Dieter Nützel
2003-07-11 15:36 ` Marc-Christian Petersen
2003-07-11 15:36 ` Dieter Nützel
2003-07-11 15:38 ` Oleg Drokin
2003-07-11 15:34 ` Marc-Christian Petersen
2003-07-11 15:44 ` Oleg Drokin
2003-07-11 17:09 ` Chris Mason
2003-07-11 17:27 ` Dieter Nützel
2003-07-11 18:32 ` Chris Mason
2003-07-11 19:51 ` Dieter Nützel
2003-07-12 1:37 ` Szakacsits Szabolcs
2003-07-12 5:16 ` Carl-Daniel Hailfinger
2003-07-12 3:49 ` Szakacsits Szabolcs
2003-07-12 13:51 ` Dieter Nützel
2003-07-15 12:19 ` Szakacsits Szabolcs
2003-07-15 16:48 ` Dieter Nützel
2003-07-15 17:05 ` Oleg Drokin
2003-07-15 19:55 ` Dieter Nützel
2003-07-16 10:35 ` Oleg Drokin
2003-07-16 10:47 ` Dieter Nützel
2003-07-16 10:57 ` Oleg Drokin
2003-07-17 18:12 ` Dieter Nützel
2003-07-22 16:43 ` Hans Reiser
2003-07-22 16:50 ` Chris Mason
2003-07-22 18:09 ` Hans Reiser
2003-07-22 18:24 ` Chris Mason
2003-07-23 0:16 ` Oleg Drokin
2003-07-23 6:25 ` Hans Reiser
2003-07-23 5:49 ` Voicu Liviu
2003-07-23 7:32 ` Hans Reiser
2003-07-23 7:19 ` Voicu Liviu
2003-07-23 6:14 ` Hans Reiser
2003-07-23 14:38 ` Chris Mason
2003-07-23 14:55 ` Hans Reiser
2003-07-23 16:20 ` Chris Mason
2003-07-23 12:25 ` Dieter Nützel
2003-07-23 13:39 ` Hans Reiser
2003-07-23 13:46 ` Dieter Nützel
2003-07-23 13:52 ` Hans Reiser
2003-07-23 14:24 ` Dieter Nützel
2003-07-23 15:24 ` Philippe Gramoullé
2003-07-12 14:05 ` Dieter Nützel
2003-07-13 13:00 ` Oleg Drokin
2003-07-13 12:58 ` Oleg Drokin [this message]
2003-07-14 8:45 ` Hans Reiser
2003-07-13 13:03 ` Oleg Drokin
2003-07-15 11:51 ` Szakacsits Szabolcs
2003-07-15 13:51 ` Hans Reiser
2003-07-11 19:23 ` Philippe Gramoullé
2003-08-03 14:05 ` Hans Reiser
2003-08-04 13:41 ` Chris Mason
2003-07-11 14:27 ` Chris Mason
2003-07-11 14:32 ` Dieter Nützel
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