From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S968012AbYD1XFK (ORCPT ); Mon, 28 Apr 2008 19:05:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S967006AbYD1WjM (ORCPT ); Mon, 28 Apr 2008 18:39:12 -0400 Received: from mail001.aei.ca ([206.123.6.130]:37743 "EHLO mail001.aei.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967001AbYD1WjL (ORCPT ); Mon, 28 Apr 2008 18:39:11 -0400 X-Greylist: delayed 399 seconds by postgrey-1.27 at vger.kernel.org; Mon, 28 Apr 2008 18:39:10 EDT From: Ed Tomlinson To: "Kallol Biswas" Subject: Re: FS performance with SD/MMC card Date: Mon, 28 Apr 2008 18:32:26 -0400 User-Agent: KMail/1.9.7 Cc: linux-kernel@vger.kernel.org References: <438397970804281351h3fc66cb8i71840519c8e3e883@mail.gmail.com> In-Reply-To: <438397970804281351h3fc66cb8i71840519c8e3e883@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200804281832.26803.edt@aei.ca> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Take a look at: http://intr.overt.org/blog/?p=66 The problem he mentions is due to dynamic cpu speed scaling to save power. When its disabled 12.9M/s comes back... The support for high speed is in the stock linux kernel. Nokia's kernel drops it since some of the HW they use for the SD card support has problems with the high speed... Thanks Ed On April 28, 2008, Kallol Biswas wrote: > Hi, > Someone has asked how fast can a linux FS write to a SD/MMC card? > > Answer to this will help make a product decision. > > > Kallol Biswas > NucleoDyne Systems, Inc. > -- > 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/ > >