From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: KVM usability Date: Sun, 07 Mar 2010 13:25:01 +0200 Message-ID: <4B938D0D.5020804@redhat.com> References: <1267068445.1726.25.camel@localhost> <1267089644.12790.74.camel@laptop> <1267152599.1726.76.camel@localhost> <20100226090147.GH15885@elte.hu> <4B879A2F.50203@redhat.com> <20100226103545.GA7463@elte.hu> <4B87A6BF.3090301@redhat.com> <20100226111734.GE7463@elte.hu> <4B8813F2.8090208@redhat.com> <20100227105643.GA17425@elte.hu> <4B8BD9BA.6020601@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Ingo Molnar , "Zhang, Yanmin" , Peter Zijlstra , ming.m.lin@intel.com, sheng.yang@intel.com, Jes Sorensen , KVM General , Zachary Amsden , Gleb Natapov , Arnaldo Carvalho de Melo , Fr??d??ric Weisbecker , Thomas Gleixner , "H. Peter Anvin" , Peter Zijlstra , Arjan van de Ven , Cole Robinson To: Anthony Liguori Return-path: Received: from mx1.redhat.com ([209.132.183.28]:48277 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751047Ab0CGLZl (ORCPT ); Sun, 7 Mar 2010 06:25:41 -0500 In-Reply-To: <4B8BD9BA.6020601@codemonkey.ws> Sender: kvm-owner@vger.kernel.org List-ID: On 03/01/2010 05:14 PM, Anthony Liguori wrote: >> - Graphics performance is awful even with the 640x480 miniature >> version. >> During bootup I can see it drawing single characters. This is a >> Core2 >> 2.8GHz. > > > That's a bug. Please report it. Graphics performance isn't great, > but it should not be that bad. (This is in grub, right?) That's not fixable in kvm. In 4-bit vga mode you cannot allow the guest to access emulated VRAM directly (since each access has side effects). A Core 2 will only do about 250K emulations per second, so screen redraws take about 3 seconds. -- error compiling committee.c: too many arguments to function