From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from risingsoftware01.propagation.net ([66.221.33.65]) by bombadil.infradead.org with esmtps (Exim 4.68 #1 (Red Hat Linux)) id 1JrQb1-0005oU-3S for linux-mtd@lists.infradead.org; Thu, 01 May 2008 04:40:39 +0000 Date: Thu, 1 May 2008 14:40:27 +1000 From: Hamish Moffatt To: Alexey Korolev Subject: Re: [PATCH][RFC] NAND subpage read feature. Take 2. Message-ID: <20080501044027.GA26541@cloud.net.au> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Cc: dwmw2@infradead.org, joern@logfs.org, linux-mtd@lists.infradead.org, tglx@linutronix.de List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, Apr 30, 2008 at 01:13:24PM +0100, Alexey Korolev wrote: > This patch enables NAND subpage read functionality. [..] > As I know some of you already use this feature. I would be much > appreciate if you give me some performance numbers. It may assist to get this > feature included. To attach my 512Mb NAND with UBI, with software NAND controller (plat_nand), on a 533MHz IXP4xx, I measure: No partial reads: 5.75 seconds Previous partial read patch: 2.72 seconds New subpage read patch: 2.42 seconds Very fine. Thanks. Hamish -- Hamish Moffatt VK3SB