From mboxrd@z Thu Jan 1 00:00:00 1970 From: Glauber Costa Subject: Re: broken timer Date: Tue, 28 Jul 2009 10:35:02 -0300 Message-ID: <20090728133502.GT4776@poweredge.glommer> References: <20090727180540.GG4776@poweredge.glommer> <20090728063305.GF30449@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kvm@vger.kernel.org, avi@redhat.com To: Gleb Natapov Return-path: Received: from mx2.redhat.com ([66.187.237.31]:54352 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754134AbZG1N2D (ORCPT ); Tue, 28 Jul 2009 09:28:03 -0400 Received: from int-mx2.corp.redhat.com (int-mx2.corp.redhat.com [172.16.27.26]) by mx2.redhat.com (8.13.8/8.13.8) with ESMTP id n6SDS35P015924 for ; Tue, 28 Jul 2009 09:28:03 -0400 Content-Disposition: inline In-Reply-To: <20090728063305.GF30449@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Tue, Jul 28, 2009 at 09:33:05AM +0300, Gleb Natapov wrote: > On Mon, Jul 27, 2009 at 03:05:40PM -0300, Glauber Costa wrote: > > Hello, goodfellas > > > > I'm seeing a strange problem in our much loved qemu-kvm.git > This bug shouldn't depend on qemu-kvm.git at all unless you are running > with no-kvm-irqchip. The only things that involved in APIC timer > calibration are tsc and APIC. (If you don't use apicpmtimer kernel > parameter. Don't you?) > > What is you host HW? Which version of kernel modules are you using? > Is your host overcommitted when this happens? Try to load the host with > work (while(1)) and run the guest. Is it easier to reproduce problem > this way? NM. I did a git pull in kvm.git, and reboot my kernel. Not a single problem since then.