From owner-freebsd-xen@freebsd.org Thu Dec 15 07:20:43 2016 Return-Path: Delivered-To: freebsd-xen@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C9C56C81989; Thu, 15 Dec 2016 07:20:43 +0000 (UTC) (envelope-from Christian.Hoyer-Reuther@cac-chem.de) Received: from mail.cac-chem.de (mail.cac-chem.de [213.187.69.85]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mail.cac-chem.de", Issuer "COMODO RSA Domain Validation Secure Server CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 87A1818F; Thu, 15 Dec 2016 07:20:43 +0000 (UTC) (envelope-from Christian.Hoyer-Reuther@cac-chem.de) Received: from localhost (localhost [127.0.0.1]) by mail.cac-chem.de (Postfix) with ESMTP id AFCCB415D7; Thu, 15 Dec 2016 08:20:34 +0100 (CET) Received: from mail.cac-chem.de ([127.0.0.1]) by localhost (mail.cac-chem.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id HSnMYgBydRMM; Thu, 15 Dec 2016 08:20:34 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by mh01.cac.loc (Postfix) with ESMTP id A0A59600D3; Thu, 15 Dec 2016 08:20:34 +0100 (CET) X-Virus-Scanned: This message was checked by ESET Mail Security for Linux at cac-chem.de Received: from mh01.cac.loc ([127.0.0.1]) by localhost (mh01.cac.loc [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 7LZKjxygV94J; Thu, 15 Dec 2016 08:20:34 +0100 (CET) Received: from EX1.cac.loc (ex1.cac.loc [172.30.77.30]) by mh01.cac.loc (Postfix) with ESMTP; Thu, 15 Dec 2016 08:20:34 +0100 (CET) Received: from EX1.cac.loc ([172.30.77.30]) by ex1 ([172.30.77.30]) with mapi; Thu, 15 Dec 2016 08:20:33 +0100 From: "Hoyer-Reuther, Christian" To: =?iso-8859-1?Q?=27Roger_Pau_Monn=E9=27?= CC: "freebsd-xen@freebsd.org" , "owner-freebsd-xen@freebsd.org" Date: Thu, 15 Dec 2016 08:20:32 +0100 Subject: Re: 11-RELEASE and live migration Thread-Topic: 11-RELEASE and live migration Thread-Index: AdJWEtVTDUZi4hYKT6KjXZnS4t+oOwAkDfrg Message-ID: <41E487BC91654544B2B8F31096F2D9D4D1B060ABBF@ex1> References: <001f01d250a6$05ca4160$115ec420$@ezwind.net> <003501d250af$032dd580$09898080$@ezwind.net> <41E487BC91654544B2B8F31096F2D9D4D1B060A925@ex1> <20161212103148.5prkggi3ix4zoxyv@dhcp-3-221.uk.xensource.com> <41E487BC91654544B2B8F31096F2D9D4D1B060AA3E@ex1> <002101d25484$c0a068c0$41e13a40$@ezwind.net> <20161214140224.rbg5h3v2opa3q3sj@dhcp-3-221.uk.xensource.com> In-Reply-To: <20161214140224.rbg5h3v2opa3q3sj@dhcp-3-221.uk.xensource.com> Accept-Language: de-DE Content-Language: de-DE X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: de-DE Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Dec 2016 07:20:43 -0000 > I'm able to see these glitches, as said the VM doesn't really hang, it ju= st > gets > stuck for a long time (and I think that depends on the uptime differences > between the source and destination hosts). In the meantime, could you ple= ase > test if changing the timecounter from XENTIMER to any other (like HPET or > ACPI-fast) solves the issue? >=20 > # sysctl -w kern.timecounter.hardware=3DACPI-fast Hello Roger, I changed the timecounter from XENTIMER to ACPI-fast and then I did about 1= 0 migrations between our 3 hosts. I always started the next migration a few= seconds after the previous migration finished. The VM didn't stuck now and= I didn't see the VGABios screen on the console. Regards, Christian