From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lazybastard.de ([212.112.238.170] helo=longford.lazybastard.org) by canuck.infradead.org with esmtps (Exim 4.63 #1 (Red Hat Linux)) id 1HWB2r-0006br-5f for linux-mtd@lists.infradead.org; Tue, 27 Mar 2007 08:45:02 -0400 Date: Tue, 27 Mar 2007 14:41:32 +0200 From: =?utf-8?B?SsO2cm4=?= Engel To: Joakim Tjernlund Subject: Re: [PATCH] Speed up mount for cfi_cmdset_0001 users Message-ID: <20070327124131.GD27290@lazybastard.org> References: <1174995841.26465.431.camel@gentoo-jocke.transmode.se> <1174996173.26465.433.camel@gentoo-jocke.transmode.se> <20070327115422.GB27290@lazybastard.org> <1174998472.26465.438.camel@gentoo-jocke.transmode.se> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1174998472.26465.438.camel@gentoo-jocke.transmode.se> Cc: linux-mtd@lists.infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 27 March 2007 14:27:52 +0200, Joakim Tjernlund wrote: > On Tue, 2007-03-27 at 13:54 +0200, Jörn Engel wrote: > > > > JFFS2 mount time on OLPC: ~3300ms > > What was the mount time before you applied the patch? That was in January with the standard OLPC image. Filesystem contained the complete rootfs. I did not optimize anything. > > LogFS mount time on OLPC: ~60ms > > > > While your works seems useful, pardon me if I don't care too much about > > JFFS2 anymore. ;) > > :) Keep working, hopefully you can do a better GC as well. > Since I only do production system ATM, it will be some time > before I will use LogFS. Does logFS do NAND as well? In principle. Mkfs will create a bad block map. But any blocks going bad later on remain unhandled. Write or erase errors simply cause BUG(). Not there yet, but getting closer. Jörn -- The strong give up and move away, while the weak give up and stay. -- unknown