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: Mon, 08 Sep 2014 18:18:46 +0200 Message-ID: <540DD6E6.70409@redhat.com> References: <20140908055416.GE23305@hydra.tuxags.com> <540D663E.2070905@redhat.com> <20140908155642.GF23305@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-qa0-f49.google.com ([209.85.216.49]:44535 "EHLO mail-qa0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753881AbaIHQS5 (ORCPT ); Mon, 8 Sep 2014 12:18:57 -0400 Received: by mail-qa0-f49.google.com with SMTP id s7so10190159qap.22 for ; Mon, 08 Sep 2014 09:18:57 -0700 (PDT) Received: from yakj.usersys.redhat.com (net-2-36-227-220.cust.vodafonedsl.it. [2.36.227.220]) by mx.google.com with ESMTPSA id t67sm7610436qge.13.2014.09.08.09.18.52 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Sep 2014 09:18:54 -0700 (PDT) In-Reply-To: <20140908155642.GF23305@hydra.tuxags.com> Sender: kvm-owner@vger.kernel.org List-ID: Il 08/09/2014 17:56, Matt Mullins ha scritto: >> > What host are you running? > What information do you want that I missed in my first email? What version of QEMU? Can you try the 12.04 qemu (which IIRC is 1.0) on top of the newer kernel? Paolo > > The hosts are dual-socket Nehalem Xeons (L5520), currently running Ubuntu > > 14.04 and the associated 3.13 kernel. I had previously reproduced this with > > 12.04 running a raring-backport 3.11 kernel as well, but I (seemingly > > erroneously) assumed it may have been a qemu userspace discrepancy. > I implied, but didn't explicitly state: I don't remember this happening with > Ubuntu 12.04's 3.2 kernel running on the hosts.