From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from e3.ny.us.ibm.com ([32.97.182.143]) by canuck.infradead.org with esmtps (Exim 4.42 #1 (Red Hat Linux)) id 1CgQUr-0000pR-34 for linux-mtd@lists.infradead.org; Mon, 20 Dec 2004 11:34:58 -0500 Received: from d01relay02.pok.ibm.com (d01relay02.pok.ibm.com [9.56.227.234]) by e3.ny.us.ibm.com (8.12.10/8.12.10) with ESMTP id iBKGYsV8020870 for ; Mon, 20 Dec 2004 11:34:54 -0500 Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay02.pok.ibm.com (8.12.10/NCO/VER6.6) with ESMTP id iBKGYs5X278596 for ; Mon, 20 Dec 2004 11:34:54 -0500 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.12.11/8.12.11) with ESMTP id iBKGYsDr002163 for ; Mon, 20 Dec 2004 11:34:54 -0500 From: Josh Boyer To: =?ISO-8859-1?Q?J=F6rn?= Engel In-Reply-To: <20041218160255.GA1083@wohnheim.fh-wedel.de> References: <1103232128.15927.70.camel@squizzey.bult.co.uk> <41C1FDFF.3020308@us.ibm.com> <1103233669.15929.81.camel@squizzey.bult.co.uk> <1103288058.3018.4.camel@weaponx.rchland.ibm.com> <1103297611.15917.184.camel@squizzey.bult.co.uk> <41C3030D.8040607@us.ibm.com> <1103302002.15927.198.camel@squizzey.bult.co.uk> <41C31307.70909@us.ibm.com> <1103304360.15914.210.camel@squizzey.bult.co.uk> <41C318C8.4030702@us.ibm.com> <20041218160255.GA1083@wohnheim.fh-wedel.de> Content-Type: text/plain; charset= Message-Id: <1103560493.25853.31.camel@weaponx.rchland.ibm.com> Mime-Version: 1.0 Date: Mon, 20 Dec 2004 10:34:54 -0600 Content-Transfer-Encoding: 8bit Cc: Linux MTD , "Gareth Bult \(Encryptec\)" Subject: Re: JFFS2 mount time List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Sat, 2004-12-18 at 10:02, Jörn Engel wrote: > On Fri, 17 December 2004 11:35:04 -0600, Josh Boyer wrote: > > > > Again, most controllers do all the wear leveling, erasing for you. So > > you are left with compression, right? > > If you have enough trust in your El Cheapo hardware supplier. There > is no standard that requires wear leveling and there are reports that > basically tell you to do your own wear leveling on some devices. With > no good way to distinguish "some" devices from "others", you can read > that as "all". ;) Ok, that's why I said "most". And if your El Cheapo hardware has built in wear leveling, then doing wear leveling on top of that is always questionable. It might not make things worse, but it's probably not very efficient. Now if you have El Super Cheapo hardware that explicitly states you need to do wear leveling, that's a different story ;). > > USB keys and all the various other consumer-type flash devices are > good enough to beat 3 1/2" floppies, that's about it. But that's > quite good enough for most people. Floppies sold like crazy after > all. That's because it was the only removable media for PCs for a long time. At least to the non-geeks. I can remember buying spare hard drives and carrying those from machine to machine if I needed to do big transfers ;). josh