From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Kinzler Subject: Re: (XEN) Platform timer appears to have unexpectedly wrapped 10 or more times. Date: Tue, 10 Apr 2012 14:33:18 +0200 Message-ID: <4F84288E.1070407@hfp.de> References: <20120104172343.GA30630@entuzijast.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Philippe.Simonet@swisscom.com Cc: xen-devel@lists.xensource.com, joy@entuzijast.net List-Id: xen-devel@lists.xenproject.org I have the same problem. Do you use ntpd? Which version? I suspect some link between the problem and ntpd. Andreas On 05.01.2012 10:39, Philippe.Simonet@swisscom.com wrote: > Hi > > I have the same problem with 4 machines (hp dl385, AMD), the problem appears one time per machine and per month ... > No chance to re-produce it faster. On some other machine with another AMD processor, I never had this problem. Olivier Hanesse > reported the problem on some Intel CPU and not on other processor. > > I'm using debian squeeze, with > > xen-hypervisor-4.0-amd64 4.0.1-4 > linux-image-2.6.32-5-xen-amd64 2.6.32-38 (dom0) > > that last changes that I have done is to add cpuidle=0 to hypervisor command line. stable since 3-4 weeks (...) > > I have e test system that runs 20 paravirt. domus, with wheezy, with same problematic HW, with > xen-hypervisor-4.1-amd64 4.1.2-2 > linux-image-3.1.0-1-amd64 3.1.6-1 (dom0) > and this system never had the TSC jump problem. but test system are test system .... > > I would be happy if you could reproduce the problem faster a me, so testing new xen / dom0 version could be > easier ... > > thanks and regards > > Philippe > > > > >> -----Original Message----- >> From: xen-devel-bounces@lists.xensource.com [mailto:xen-devel- >> bounces@lists.xensource.com] On Behalf Of Josip Rodin >> Sent: Wednesday, January 04, 2012 6:24 PM >> To: xen-devel@lists.xensource.com >> Subject: [Xen-devel] (XEN) Platform timer appears to have unexpectedly >> wrapped 10 or more times. >> >> Hi, >> >> Sometimes, seemingly randomly, long-running Xen domains, using >> clocksource xen, have their clock shift by ~3000 or ~36000 seconds, often >> with the dom0 complaining about clocksource tsc. The number changes if the >> hypervisor is explicitly told to use clocksource=pit, but it still happens. It >> doesn't seem to be particularly hardware-specific. >> >> See also http://bugs.debian.org/599161 >> >> I see from the archives that others have reported this problem here in >> February last year, but I couldn't find a resolution. Can anyone help? >> >> (Please Cc: responses, I'm not subscribed.) >> >> -- >> 2. That which causes joy or happiness. >> >> _______________________________________________ >> Xen-devel mailing list >> Xen-devel@lists.xensource.com >> http://lists.xensource.com/xen-devel > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel