From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: Regression in vga performance between 0.11.1 and 0.12.1.1 Date: Fri, 30 Apr 2010 10:32:56 +0300 Message-ID: <4BDA87A8.3020503@redhat.com> References: <4BD88D84.4050601@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Adam Greenblatt Return-path: Received: from mx1.redhat.com ([209.132.183.28]:51973 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932994Ab0D3RRk (ORCPT ); Fri, 30 Apr 2010 13:17:40 -0400 In-Reply-To: <4BD88D84.4050601@gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: On 04/28/2010 10:33 PM, Adam Greenblatt wrote: > Hi, > I noticed that certain guests (for example, Ubuntu 9.04, Ubuntu 9.10, > and the Ubuntu 10.04 release candidate) show dramatically (~100x) slower > graphical output when running under qemu-kvm-0.12.1.1 than under > qemu-kvm-0.11.1. > Other guests, notably Windows XP and Windows Vista, run fine under both > version of qemu. The regression is still present in qemu-kvm-0.12.3. Please post kvm_stat output for the fast and slow cases (preferably running the same workload, perhaps a web page displaying an animation). -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.