[ubuntu-za] Ubuntu 7.10 on VM : Serious clock instability

Morgan Collett morgan at ubuntu.com
Fri Feb 29 07:45:13 GMT 2008


On Fri, Feb 29, 2008 at 9:34 AM, Simon Hoffe <sjhoffe at gmail.com> wrote:
> There hasn't been much response to my earlier query (see below). But I have
> done some digging, and it appears that I'm not alone:
>
> https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/183879
> http://communities.vmware.com/thread/110729
> http://www.amoeba.org/articles/tag/vmware
> http://www.amoeba.org/articles/2008/02/03/fixing-a-clock-problem-in-vmware-ubuntu
> http://linux.derkeiler.com/Mailing-Lists/Fedora/2007-09/msg01203.html
> http://fedoraproject.org/wiki/KernelCommonProblems#head-c315e5c497d1ac178f1346fb691e44f2d9792ab5
> (search for "clock")

> > I've got a serious problem with clock stability on an Ubuntu 7.10
> > server running in VM on a VMWare ESX platform.
> >
> > At some random time, on some nights, the date will jump years backwards.

Very strange. I haven't run vmware for a long time, and I haven't
heard of this before, but it does seem like people are using Xen more
and more. Perhaps VMWare have to catch up with handling some of the
latest stuff like tickless kernels etc.

Regards
Morgan



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