Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760224AbXEaJS7 (ORCPT ); Thu, 31 May 2007 05:18:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755517AbXEaJSw (ORCPT ); Thu, 31 May 2007 05:18:52 -0400 Received: from py-out-1112.google.com ([64.233.166.182]:34325 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756877AbXEaJSv (ORCPT ); Thu, 31 May 2007 05:18:51 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=qZ7cLfbokf53zanOyrDQMy3HsiDnpUf8LHmdEaRJlWZq/FGLf7tDK0eskhNBFkoO1lyMDbgUQJqPLRgiG9DY7bFmXBtI3NBpAaN4DHlG+1hTpGyaACrjtqBwseLnZSFjQI1puZe3vEmjAAm2gITwnIAHX3rjMP7x49LS49Bw4As= Message-ID: <6278d2220705310218x2736f652wb8d17095a9a82e6f@mail.gmail.com> Date: Thu, 31 May 2007 10:18:48 +0100 From: "Daniel J Blueman" To: "Lee Revell" Subject: Re: Compact Flash performance... Cc: bzolnier@gmail.com, linux-ide@vger.kernel.org, "Linux Kernel" , "Jeff Garzik" , "Alan Cox" In-Reply-To: <75b66ecd0705301531q1ba78d39od07d2611573c9150@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <6278d2220705301510y2d81f69eu38fb778d32de05e1@mail.gmail.com> <75b66ecd0705301531q1ba78d39od07d2611573c9150@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1111 Lines: 29 On 30/05/07, Lee Revell wrote: > On 5/30/07, Daniel J Blueman wrote: > > I have a SanDisk Extreme IV 4GB CF card, capable of 40MB/s read, but > > am seeing 30MB/s read [1], connected directly to the IDE bus on my > > ICH8 controller. > > How do you know it's capable of 40MB/s read? Hi Lee, There are various reports of users getting 40MB/s == 38.1MiB/s with UDMA mode 6 media readers (which are few and far between): http://www.robgalbraith.com/bins/content_page.asp?cid=7-7896-8475 http://www.it-enquirer.com/media/screenshots/sandisk-extreme-bench.png If a particular reader is able to get 40MB/s through the CF interface, then this most likely will be achievable with ICH8+Linux also, but perhaps parameters need to be tuned or the right IDE configuration needs to be reached etc. > Lee -- Daniel J Blueman - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/