From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: kvm somehow exempt from frequency scaling? Date: Thu, 12 Apr 2007 16:59:40 +0300 Message-ID: <461E3B4C.2020507@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> 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: <87odltyay4.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: > on Thu Apr 12 2007, Avi Kivity wrote: > > >> David Abrahams wrote: >> >> >> >> >>>>> Newsflash: yes, it does. The VM keeps using cycles at a normal rate >>>>> even when not on a visible workspace. This problem appears to be >>>>> KVM-specific. >>>>> >>>>> >>>>> >>>> Amazing. >>>> >>>> Can you strace a hung vm and post the log? >>>> >>>> >>> If you can tell me how, I'll be happy to try anything you like. >>> >>> >>> >> do a >> >> strace -ttT -o /tmp/log -p pid-of-qemu-process >> >> and post /tmp/log. >> > > > Here's about 5 seconds of strace: > qemu is getting cpu time, but not calling into kvm. I'll try to reproduce this locally, right now I'm completely bewildered by this. -- 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