From: Adrian Hunter <ext-adrian.hunter@nokia.com>
To: ext Jan Engelhardt <jengelh@computergmbh.de>
Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>,
LKML <linux-kernel@vger.kernel.org>,
joern@lazybastard.org
Subject: Re: [RFC PATCH] UBIFS - new flash file system
Date: Mon, 31 Mar 2008 15:47:05 +0300 [thread overview]
Message-ID: <47F0DD49.7010302@nokia.com> (raw)
In-Reply-To: <alpine.LNX.1.10.0803311428270.2554@fbirervta.pbzchgretzou.qr>
Jan Engelhardt wrote:
>
> On Thursday 2008-03-27 15:55, Artem Bityutskiy wrote:
>>
>> here is a new flash file system developed by Nokia engineers with
>> help of the University of Szeged. The new file-system is called
>> UBIFS, which stands for UBI file system. UBI is the wear-leveling/
>> bad-block handling/volume management layer which is already in
>> mainline (see drivers/mtd/ubi).
>> [...]
>
> And how does it compare to logfs?
We don't know a lot about logfs, so you will really have to make
your own comparison. However our general impressions are as follows:
1. In our testing logfs file operations seem to be much slower,
see http://osl.sed.hu/wiki/ubifs/index.php/IOzone
2. logfs code base is much smaller i.e. UBIFS has 3-4 times as many
lines of code.
3. logfs does not seem to have bad-block handling.
4. logfs does not seem to have wear-leveling.
5. We are not certain how scalable logfs is.
We could be wrong about those things - don't flame us if we are.
Ask us about UBIFS, not logfs.
next prev parent reply other threads:[~2008-03-31 12:52 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-27 14:55 [RFC PATCH] UBIFS - new flash file system Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 01/26] VFS: introduce writeback_inodes_sb() Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 02/26] UBIFS: add I/O sub-system Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 03/26] UBIFS: add flash scanning Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 04/26] UBIFS: add journal replay Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 05/26] UBIFS: add file-system build Artem Bityutskiy
2008-03-28 10:12 ` Andrew Morton
2008-03-28 11:04 ` Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 06/26] UBIFS: add superblock and master node Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 07/26] UBIFS: add file-system recovery Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 08/26] UBIFS: add compression support Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 09/26] UBIFS: add key helpers Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 10/26] UBIFS: add the journal Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 11/26] UBIFS: add commit functionality Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 12/26] UBIFS: add TNC implementation Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 13/26] UBIFS: add TNC commit implementation Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 14/26] UBIFS: add TNC shrinker Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 15/26] UBIFS: add LEB properties Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 16/26] UBIFS: add LEB properties tree Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 17/26] " Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 18/26] UBIFS: add LEB find subsystem Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 19/26] UBIFS: add Garbage Collector Artem Bityutskiy
2008-04-01 2:11 ` Arnd Bergmann
2008-03-27 14:55 ` [RFC PATCH 20/26] UBIFS: add VFS operations Artem Bityutskiy
2008-03-27 13:36 ` Andi Kleen
2008-03-27 13:42 ` Artem Bityutskiy
2008-04-01 12:08 ` Pekka Enberg
2008-04-01 12:42 ` Artem Bityutskiy
2008-04-01 13:12 ` Pekka Enberg
2008-04-01 14:04 ` Artem Bityutskiy
2008-04-01 15:14 ` Adrian Hunter
2008-03-27 14:55 ` [RFC PATCH 21/26] UBIFS: add budgeting Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 22/26] UBIFS: add extended attribute support Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 23/26] UBIFS: add orphans handling sub-system Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 24/26] UBIFS: add header files Artem Bityutskiy
2008-03-27 14:55 ` [RFC PATCH 25/26] UBIFS: add debugging stuff Artem Bityutskiy
2008-03-31 21:00 ` Pekka Enberg
2008-04-01 6:20 ` Artem Bityutskiy
2008-04-01 7:33 ` Pekka Enberg
2008-04-01 8:32 ` Artem Bityutskiy
2008-04-01 9:00 ` Pekka Enberg
2008-04-01 9:04 ` Artem Bityutskiy
2008-04-01 8:34 ` Adrian Hunter
2008-04-01 7:43 ` Pekka Enberg
2008-03-27 14:55 ` [RFC PATCH 26/26] UBIFS: include FS to compilation Artem Bityutskiy
2008-04-01 7:39 ` Pekka Enberg
2008-04-01 8:51 ` Artem Bityutskiy
2008-04-01 9:15 ` Pekka Enberg
2008-04-01 9:25 ` Artem Bityutskiy
2008-04-01 10:04 ` Pekka Enberg
2008-04-01 10:26 ` Artem Bityutskiy
2008-04-01 11:33 ` Pekka Enberg
2008-04-01 11:56 ` Artem Bityutskiy
2008-04-26 9:37 ` Christoph Hellwig
2008-04-28 7:10 ` Adrian Hunter
2008-04-28 9:03 ` ext Christoph Hellwig
2008-04-30 7:04 ` Adrian Hunter
2008-04-26 9:35 ` Christoph Hellwig
2008-04-28 7:09 ` Adrian Hunter
2008-04-28 9:00 ` ext Christoph Hellwig
2008-04-28 11:23 ` Adrian Hunter
2008-04-28 11:39 ` ext ext Christoph Hellwig
2008-04-28 12:25 ` Adrian Hunter
2008-04-28 13:02 ` Christoph Hellwig
2008-03-27 16:20 ` [RFC PATCH] UBIFS - new flash file system Josh Boyer
2008-03-28 6:17 ` Artem Bityutskiy
2008-03-28 6:45 ` Artem Bityutskiy
2008-03-31 12:29 ` Jan Engelhardt
2008-03-31 12:47 ` Adrian Hunter [this message]
2008-03-31 13:20 ` Jörn Engel
2008-03-31 14:00 ` Artem Bityutskiy
2008-03-31 17:17 ` Jörn Engel
2008-03-31 20:49 ` Pekka Enberg
2008-03-31 21:21 ` Jörn Engel
2008-04-01 6:00 ` Artem Bityutskiy
2008-04-01 5:26 ` UBIFS vs Logfs (was [RFC PATCH] UBIFS - new flash file system) Artem Bityutskiy
2008-04-01 5:28 ` Artem Bityutskiy
2008-04-01 5:56 ` Artem Bityutskiy
2008-04-01 9:25 ` Jörn Engel
2008-04-01 9:39 ` Artem Bityutskiy
2008-04-01 10:51 ` Jörn Engel
2008-04-01 11:17 ` Artem Bityutskiy
2008-04-01 9:19 ` Jörn Engel
2008-04-01 9:46 ` Artem Bityutskiy
2008-04-01 11:16 ` Jörn Engel
2008-03-31 13:40 ` [RFC PATCH] UBIFS - new flash file system Jörn Engel
2008-04-01 21:01 ` Matthieu CASTET
2008-04-03 7:07 ` Artem Bityutskiy
2008-04-18 9:05 ` Thomas Gleixner
-- strict thread matches above, loose matches on Subject: below --
2008-03-28 6:49 Artem Bityutskiy
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