From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753612AbcDAQ7E (ORCPT ); Fri, 1 Apr 2016 12:59:04 -0400 Received: from avon.wwwdotorg.org ([70.85.31.133]:44664 "EHLO avon.wwwdotorg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753241AbcDAQ7C (ORCPT ); Fri, 1 Apr 2016 12:59:02 -0400 Subject: Re: [PATCH 1/4] ARM: bcm2835: Switch BCM2835 to sdhci-iproc.c for MMC To: Eric Anholt References: <1459470643-9070-1-git-send-email-eric@anholt.net> Cc: linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Lee Jones , Florian Fainelli From: Stephen Warren Message-ID: <56FEA8CE.4090700@wwwdotorg.org> Date: Fri, 1 Apr 2016 10:58:54 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <1459470643-9070-1-git-send-email-eric@anholt.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/31/2016 06:30 PM, Eric Anholt wrote: > This approximately triples write performance for the SD card. My card > is too full of important data to collect very reliable numbers, but I > see 271.361% +/- 166.742% improvement (n=3 before, 6 after), for 'dd > if=/dev/zero of=/boot/asdf bs=1M count=3 oflag=dsync,direct'. Read > performance appears to be unaffected. Acked-by: Stephen Warren