From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: Live migration locks up 3.2 guests in do_timer(ticks ~ 500000) Date: Tue, 28 Oct 2014 10:04:10 +0100 Message-ID: <544F5C0A.1040504@redhat.com> References: <20140908055416.GE23305@hydra.tuxags.com> <540D663E.2070905@redhat.com> <20140908155642.GF23305@hydra.tuxags.com> <540DD6E6.70409@redhat.com> <20140910065349.GM23305@hydra.tuxags.com> <20140915181441.GN23305@hydra.tuxags.com> <5417F801.20408@redhat.com> <20141027184216.GA29098@hydra.tuxags.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from mail-wg0-f44.google.com ([74.125.82.44]:43249 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751973AbaJ1JEO (ORCPT ); Tue, 28 Oct 2014 05:04:14 -0400 Received: by mail-wg0-f44.google.com with SMTP id y10so270774wgg.3 for ; Tue, 28 Oct 2014 02:04:13 -0700 (PDT) Received: from [192.168.10.150] (net-37-117-142-149.cust.vodafonedsl.it. [37.117.142.149]) by mx.google.com with ESMTPSA id fu5sm1050904wjb.26.2014.10.28.02.04.11 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 28 Oct 2014 02:04:12 -0700 (PDT) In-Reply-To: <20141027184216.GA29098@hydra.tuxags.com> Sender: kvm-owner@vger.kernel.org List-ID: On 10/27/2014 07:42 PM, Matt Mullins wrote: >>> > > I'm not really sure what to look at from here. I suppose leaving kvmclock >>> > > disabled is a workaround for now, but is there a major disadvantage to doing >>> > > so? >> > >> > Sorry for not following up. I think we have QEMU patches to fix this >> > issue. I'll reply as soon as they are available in a git tree. > Do you have any more information on the fix? Are there any downsides if I > disable kvmclock for my guests instead? Hi Matt, can you test using QEMU from git://git.qemu-project.org/qemu.git? Paolo