From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Zielinski Subject: Re: Framebuffer fbtest issues Date: Thu, 27 Nov 2003 21:46:06 -0500 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <3FC6B6EE.9000307@undead.cc> References: Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Cipher TLSv1:DES-CBC3-SHA:168) (Exim 3.31-VA-mm2 #1 (Debian)) id 1APYeD-0007Jn-00 for ; Thu, 27 Nov 2003 18:46:21 -0800 Received: from gw-undead3.tht.net ([216.126.84.18] helo=mail.undead.cc) by sc8-sf-mx2.sourceforge.net with smtp (Exim 4.24) id 1APYeB-0004GV-UA for linux-fbdev-devel@lists.sourceforge.net; Thu, 27 Nov 2003 18:46:20 -0800 In-Reply-To: Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Linux Frame Buffer Device Development Geert Uytterhoeven wrote: > How much memory does the Radeon 9200 have? Probably at least 64 MiB. > Usually > reading from video memory across PCI/AGP is slow, that's why usually it's > faster for fbcon to scroll by redrawing all characters instead of > copying video > data. > > > It has 128 MiB. I didn't realize that reading video memory was that slow... So it's a better idea to not save the frame buffer if it's in KD_TEXT mode and just have the fbcon redraw it. I'll post my patches to fbtest later so you can see what I'm talking about. John ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/