From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755939AbYIPPaa (ORCPT ); Tue, 16 Sep 2008 11:30:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753687AbYIPPaU (ORCPT ); Tue, 16 Sep 2008 11:30:20 -0400 Received: from mail-gx0-f16.google.com ([209.85.217.16]:36997 "EHLO mail-gx0-f16.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752283AbYIPPaR (ORCPT ); Tue, 16 Sep 2008 11:30:17 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=ZL6v9nDDK4wYT/F9Izq2qgHA3py9toi0b4Svjv7PwI9VGEoeehzt3OayWs6DwUNy3g 30MpkC7Iweiw45EwtqHD1BwaSpBQP/+HWHiv4YBtGcubUe57quX6x3XPmvp15almRb65 eNVgpLhY0lumWQ2AWBmtLtOhyG7+tjoMLbYgI= Message-ID: <6934efce0809160830v461a115ch305aeaadaf5d9883@mail.gmail.com> Date: Tue, 16 Sep 2008 08:30:16 -0700 From: "Jared Hulbert" To: "Ricard Wanderlof" Subject: Re: [PATCH 00/10] AXFS: Advanced XIP filesystem Cc: "Jamie Lokier" , "cotte@de.ibm.com" , "Greg Ungerer" , "linux-embedded@vger.kernel.org" , "nickpiggin@yahoo.com.au" , "=?UTF-8?Q?J=C3=B6rn_Engel?=" , "Linux-kernel@vger.kernel.org" , linux-mtd , "tim.bird@am.sony.com" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080915163421.GA13631@shareable.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > NAND is significantly faster when writing than NOR, read speed is of the > same magnitude, possibly slower in many cases. Right. Specifically, read bandwidth is on the same order of magnitude. However the read latency of NAND is a couple orders of magnitude higher (100ns vs 20,000ns) so it depends on what you are doing.