Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756255AbZCEBCg (ORCPT ); Wed, 4 Mar 2009 20:02:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750972AbZCEBC2 (ORCPT ); Wed, 4 Mar 2009 20:02:28 -0500 Received: from proofpoint1.lanl.gov ([204.121.3.25]:56069 "EHLO proofpoint1.lanl.gov" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750752AbZCEBC2 (ORCPT ); Wed, 4 Mar 2009 20:02:28 -0500 X-Greylist: delayed 2400 seconds by postgrey-1.27 at vger.kernel.org; Wed, 04 Mar 2009 20:02:28 EST X-NIE-2-Virus-Scanner: amavisd-new at mailrelay1.lanl.gov Message-ID: <49AF1B16.5000907@lanl.gov> Date: Wed, 04 Mar 2009 17:21:42 -0700 From: "Marcus G. Daniels" User-Agent: Thunderbird 2.0.0.19 (Windows/20081209) MIME-Version: 1.0 To: Geert Uytterhoeven CC: Benjamin Herrenschmidt , Jens Axboe , Jim Paris , Arnd Bergmann , Linux Kernel Development , Linux/PPC Development , linux-mtd@lists.infradead.org, Vivien Chappelier , Cell Broadband Engine OSS Development Subject: Re: [Cbe-oss-dev] [PATCH/RFC] ps3/block: Add ps3vram-ng driver for accessing video RAM as block device References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.7400:2.4.4,1.2.40,4.0.166 definitions=2009-03-04_11:2009-02-26,2009-03-04,2009-03-04 signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1047 Lines: 22 Geert Uytterhoeven wrote: > Ideally, we think it would be best if the existing MTD-based ps3vram driver > would be replaced by the new block-based ps3vram driver before 2.6.29 is > released. This would relieve the burden of supporting two different swap space > schemes on PS3 (swap on /dev/mtdblock0 vs. /dev/ps3vram) from the distro > maintainer's shoulders, as in that case there would never have been a stable > kernel version containing the MTD-based ps3vram driver. > [..] > - ps3vram-ng is faster than ps3vram: > o 1 MiB blocks: +50% (read), +5% (write) > o 4 KiB blocks: +50% (read), +5% (write) > o 512 B blocks: +10% (read), +10% (write) > Fwiw, it's a useful swap device, since space is so limited -- the performance improvements are certainly appealing too. Marcus -- 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/