From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1LPIU8-00079I-To
	for qemu-devel@nongnu.org; Tue, 20 Jan 2009 10:25:49 -0500
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1LPIU3-00076C-Gv
	for qemu-devel@nongnu.org; Tue, 20 Jan 2009 10:25:44 -0500
Received: from [199.232.76.173] (port=34558 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1LPIU3-000765-DI
	for qemu-devel@nongnu.org; Tue, 20 Jan 2009 10:25:43 -0500
Received: from smtp.eu.citrix.com ([62.200.22.115]:62550)
	by monty-python.gnu.org with esmtp (Exim 4.60)
	(envelope-from <Stefano.Stabellini@eu.citrix.com>)
	id 1LPIU3-0006lQ-0z
	for qemu-devel@nongnu.org; Tue, 20 Jan 2009 10:25:43 -0500
Message-ID: <4975EC17.3090404@eu.citrix.com>
Date: Tue, 20 Jan 2009 15:21:59 +0000
From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
MIME-Version: 1.0
References: <20090119162633.GO29175@csclub.uwaterloo.ca>
	<20090119194221.GS29175@csclub.uwaterloo.ca>
	<20090120005351.GV29175@csclub.uwaterloo.ca>
	<200901200133.25029.paul@codesourcery.com>
	<4975B3F6.6050706@eu.citrix.com>
	<20090120144518.GW29175@csclub.uwaterloo.ca>
In-Reply-To: <20090120144518.GW29175@csclub.uwaterloo.ca>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Subject: [Qemu-devel] Re: Extremely slow graphic updates
Reply-To: qemu-devel@nongnu.org
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Paul Brook <paul@codesourcery.com>, qemu-devel@nongnu.org

Lennart Sorensen wrote:

> On Tue, Jan 20, 2009 at 11:22:30AM +0000, Stefano Stabellini wrote:
>> We are not doing anything that dumb (anything that I am aware of :)
> 
> Could it be that it is trying to use shared video ram even in cases
> where that is a very bad idea?


There are no such cases I am aware of.

 
>> What is the quickest way for me to reproduce this problem?
>> Have you seen this on ppc emulation only?
> 
> Boot qemu-system-ppc with default options.  I use debian lenny (2.6.26
> kernel).  I think it runs 800x600 resolution by default.  


Are you using Xorg in the guest? What is the guest color depth?

 
>> What is the resolution of your host? What X11 extensions are you using?
>> Do you set SDL_VIDEODRIVER anywhere?
> 
> Nope.  My xorg.conf doesn't list any extensions, so whatever the
> defaults are.  I can check.
> 

I assume your host is an i386 machine.
What is the color depth of your Xorg server running on the host?