From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Abrahams Subject: Re: [kvm-devel] kvm somehow exempt from frequency scaling? Date: Sun, 06 Jul 2008 09:55:56 -0400 Message-ID: <87prpr5d77.fsf@mcbain.luannocracy.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> <4870B6F5.9000004@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kvm@vger.kernel.org To: Avi Kivity Return-path: Received: from boost-consulting.com ([206.71.190.141]:51553 "EHLO boost-consulting.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754865AbYGFOGZ (ORCPT ); Sun, 6 Jul 2008 10:06:25 -0400 In-Reply-To: <4870B6F5.9000004@qumranet.com> (Avi Kivity's message of "Sun, 06 Jul 2008 15:13:41 +0300") Sender: kvm-owner@vger.kernel.org List-ID: on Sun Jul 06 2008, Avi Kivity wrote: > [Resurrecting old thread] > > David Abrahams wrote: >> on Tue Apr 10 2007, Michael Riepe wrote: >> >> >>> Hi! >>> >>> Avi Kivity wrote: >>> >>> >>>> Sounds like ondemand is broken. >>>> >>> Maybe it only switches when the load rises in user space. With KVM, it >>> appears in system space. Got to cross-check that on my Core Duo. >>> >> >> More data: it definitely seems to make a difference whether the VM's >> desktop is showing. If I switch Gnome workspaces so it's not visible, >> it doesn't seem to drive the frequency up. >> >> > > This just happened to me. I noticed that if I switch the workspace > using alt-ctrl-left while the qemu window is active, qemu hangs. On > the other hand, if I switch using the mouse, or while some other > window is active, everything is fine. The qemu code even explains > this as an sdl bug. > > Jingle any bells? I'm afraid not, sorry. I stopped noticing the effect since I upgraded to Ubuntu Hardy, although I admit I've stopped looking for it. -- Dave Abrahams BoostPro Computing http://www.boostpro.com