From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: kvm somehow exempt from frequency scaling? Date: Tue, 24 Apr 2007 11:47:17 +0300 Message-ID: <462DC415.3000209@qumranet.com> References: <87veg6bck6.fsf@grogan.peloton> <4619EB19.20305@qumranet.com> <87mz1gj1pr.fsf@grogan.peloton> <461B3CBB.3040401@qumranet.com> <461B63E4.3080804@mr511.de> <87hcrnciom.fsf@grogan.peloton> <87fy76c1el.fsf@grogan.peloton> <461D1D3F.8050001@mr511.de> <87fy76ahkk.fsf@grogan.peloton> <461D2CFD.8040008@mr511.de> <87hcrm8too.fsf@grogan.peloton> <87k5wi741c.fsf@grogan.peloton> <461DA903.50902@qumranet.com> <87slb5zwj5.fsf@grogan.peloton> <461E16AA.8090704@qumranet.com> <87odltyay4.fsf@grogan.peloton> <461E3B4C.2020507@qumranet.com> <87d529wsja.fsf@grogan.peloton> <873b30u255.fsf@grogan.peloton> <87y7ki62yn.fsf@grogan.peloton> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: David Abrahams Return-path: In-reply-to: <87y7ki62yn.fsf-2bi8v6C3s58ZC2cDDG0gXw@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 David Abrahams wrote: >>>> I'll try to reproduce this locally, right now I'm completely bewildered >>>> by this. >>>> >>> FYI, if I listen to the radio in windows media player, I don't see the >>> effect. KVM will take 18% or so of the CPU even when not on a visible >>> workspace. >>> >> And since ubuntu's update to kvm 1:16-1ubuntu2, I can't see the effect >> at all, no matter what I do. >> > > I take it back. If I launch kvm and switch to another desktop > immediately, I can come back a seemingly arbitrary amount of time > later and it will not have finished booting. It also never seems to > force the CPU frequency to 100%. AFAICT I am seeing exactly what I > was seeing before. > Argh. Can you try the following experiments (independently): - run kvm with the '-no-rtc' option - disable compiz (or beryl). I think the menu item is called 'Desktop Effects'. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/