From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [195.209.228.254] (helo=shelob.oktetlabs.ru) by canuck.infradead.org with esmtps (Exim 4.52 #1 (Red Hat Linux)) id 1EI7xV-0002yw-O3 for linux-mtd@lists.infradead.org; Wed, 21 Sep 2005 13:02:20 -0400 Message-ID: <43319192.70406@yandex.ru> Date: Wed, 21 Sep 2005 21:00:02 +0400 From: "Artem B. Bityutskiy" MIME-Version: 1.0 To: Andy Hawkins References: <003401c5becc$6795bf00$153335bf@cabletime.com> In-Reply-To: <003401c5becc$6795bf00$153335bf@cabletime.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-mtd@lists.infradead.org, support@mvista.com, linuxppc-embedded@ozlabs.org Subject: Re: Slow read performance of NAND flash on PPC 405EP List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Andy Hawkins wrote: > Hi, > > We have a custom PPC-405EP based board, with a Samsumg 8Gbit flash > (K9W8G08U1M) attached via EBC bank 2. When we read from this flash, we are > only getting data rates of around 20 MBits/sec (this is using 'dd' to read > direct from the linux /dev/mtd/x device). Our estimates show that the device > should be capable of something like 100 MBits/sec. > Ops, pardon, you are not going to use JFFS2 :-) Ignore that mail then :-) -- Best Regards, Artem B. Bityuckiy, St.-Petersburg, Russia.