From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: QEMU PIC indirection patch for in-kernel APIC work Date: Wed, 04 Apr 2007 19:54:12 +0300 Message-ID: <4613D834.6030600@qumranet.com> References: <4613CCD1.2070702@qumranet.com> <8FFF7E42E93CC646B632AB40643802A8025B962E@scsmsx412.amr.corp.intel.com> <64F9B87B6B770947A9F8391472E032160B318EDB@ehost011-8.exch011.intermedia.net> <4613D596.7080201@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Anthony Liguori Return-path: In-Reply-To: <4613D596.7080201-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Anthony Liguori wrote: >> >>> BTW, I see CPU utilization of qemu is almost always 99% in the top >>> command when I run kernel build in an x86-64 Linux guest. >>> >> > > qemu would be 99% even if all the time is being spent in the guest > context. > > If the user time is high, an oprofile run would be pretty useful. > I've found that the VGA drawing routines can be pretty expensive. > Ah, Jun's used to seeing Xen's qemu-dm idling when the guest is not issuing I/O. With kvm, guest cpu time is accounted as system time to the qemu process. Thanks for clearing that up, I didn't understand the question till now. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV