Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756750AbYCaNVO (ORCPT ); Mon, 31 Mar 2008 09:21:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754387AbYCaNVA (ORCPT ); Mon, 31 Mar 2008 09:21:00 -0400 Received: from lazybastard.de ([212.112.238.170]:51038 "EHLO longford.logfs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753470AbYCaNU7 (ORCPT ); Mon, 31 Mar 2008 09:20:59 -0400 Date: Mon, 31 Mar 2008 15:20:47 +0200 From: =?utf-8?B?SsO2cm4=?= Engel To: Adrian Hunter Cc: ext Jan Engelhardt , Artem Bityutskiy , LKML , joern@lazybastard.org Subject: Re: [RFC PATCH] UBIFS - new flash file system Message-ID: <20080331132047.GA31660@logfs.org> References: <1206629746-4298-1-git-send-email-Artem.Bityutskiy@nokia.com> <47F0DD49.7010302@nokia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <47F0DD49.7010302@nokia.com> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1073 Lines: 33 On Mon, 31 March 2008 15:47:05 +0300, Adrian Hunter wrote: > > > >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 Shiny numbers! Performance has improved significantly in the last six month. Still worth a closer look. > 3. logfs does not seem to have bad-block handling. Bad blocks at mkfs time are handled, blocks turning bad later on aren't yet. > 4. logfs does not seem to have wear-leveling. It does. Jörn -- Fools ignore complexity. Pragmatists suffer it. Some can avoid it. Geniuses remove it. -- Perlis's Programming Proverb #58, SIGPLAN Notices, Sept. 1982 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/