From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: Re: Fw: framebuffer blitting performance loss 2.6.12 -> 2.6.13-rc3 Date: Fri, 22 Jul 2005 11:58:23 +0800 Message-ID: <200507221158.23454.adaplas@gmail.com> References: <20050715033912.1cd9b6c3.akpm@osdl.org> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1Dvpbc-0000b8-Aq for linux-fbdev-devel@lists.sourceforge.net; Thu, 21 Jul 2005 21:57:52 -0700 Received: from rproxy.gmail.com ([64.233.170.195]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1Dvpbc-0000EK-Aq for linux-fbdev-devel@lists.sourceforge.net; Thu, 21 Jul 2005 21:57:52 -0700 Received: by rproxy.gmail.com with SMTP id a41so142889rng for ; Thu, 21 Jul 2005 21:57:48 -0700 (PDT) In-Reply-To: <20050715033912.1cd9b6c3.akpm@osdl.org> Content-Disposition: inline Sender: linux-fbdev-devel-admin@lists.sourceforge.net Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: linux-fbdev-devel@lists.sourceforge.net, Andrew Morton Cc: Knut Petersen On Friday 15 July 2005 18:39, Andrew Morton wrote: > Begin forwarded message: > > Date: Fri, 15 Jul 2005 12:14:37 +0200 > From: Knut Petersen > To: linux-kernel@vger.kernel.org > Subject: framebuffer blitting performance loss 2.6.12 -> 2.6.13-rc3 > > > Hi everybody! > > There is a serious performance loss between 2.6.12 and 2.6.13-rc3 > affecting _all_ framebuffer devices, especially those with fast > bitblit functions. > I haven't seen any significant performance penalty, between 2.6.12-rc5-mm1 and 2.6.13-rc3-mm1. Based on your results, I would pinpoint the culprit to be in video/console/bitblit.c. However, the changes there are minor, and should not alter the peformance. Tony ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click