From mboxrd@z Thu Jan 1 00:00:00 1970 From: "David H. Vree" Subject: 2D Graphics Performance Date: Wed, 27 May 2009 10:34:53 -0400 Message-ID: <4A1D4F8D.3040401@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from yx-out-2324.google.com ([74.125.44.30]:37822 "EHLO yx-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751322AbZE0Oey (ORCPT ); Wed, 27 May 2009 10:34:54 -0400 Received: by yx-out-2324.google.com with SMTP id 3so2637042yxj.1 for ; Wed, 27 May 2009 07:34:55 -0700 (PDT) Sender: kvm-owner@vger.kernel.org List-ID: Hello -- I am trying to optimize 2D video graphics performance for a 32 bit Winxp guest running on Ubuntu 9.04. I have done some preliminary benchmarking and have found that vga "std" outperforms "cirrus" on most tests by about 20%-40%. However the std option is still (depending on the test) about 3 to 20 times slower than native 2D performance I get using low-end on-board Intel graphics. I haven't run the benchmark in VMWare workstation yet, but I can tell by looking that KVM is much slower -- which has surprised me because it has performed very well in my cpu and disk i/o tests. I have attempted to try the "vmware" option by installing the vmware SVGA II driver in the Winxp guest, but all I ever get with this option is a blank screen. In reading an earlier thread in this mailing list, somebody said that the "-vga vmware" option was only for Linux/Unix based guests. Can anyone confirm this? My machine has 2 quad-core 2.7Ghz AMD opterons, 16 GB RAM, and an nVidia 285 GLX card. Here is the command line I am using: kvm -hda kvm2dperf.qcow2 -m 2G -smp 2 -k en-us -name "KVM 2D Perf" -vga std -net nic -net user -soundhw all -cpu qemu64 Is there any other command line options or approaches for amping up graphics performance? I am open to any/all ideas! Thanks, Dave