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Re: [Xen-users] 47s clock skew in domUs every so often, Debian squeeze packaged hypervisor 4.0.1-2

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Andy Smith <andy@xxxxxxxxxxxxxx>
  • Date: Wed, 21 Sep 2011 15:56:26 +0000
  • Delivery-date: Wed, 21 Sep 2011 08:58:00 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Openpgp: id=BF15490B; url=http://strugglers.net/~andy/pubkey.asc

Hi Steven,

On Wed, Sep 21, 2011 at 08:55:08AM -0500, Steven Timm wrote:
> What's your setting for /proc/sys/xen/independent_wallclock?

Not sure if that was for Steve or myself, but since most of the
domUs I have access to are using pvops kernels they don't have an
independent_wallclock setting at all.


> On Wed, 21 Sep 2011, Steve Allison wrote:
>> On 20/09/2011 22:02, Andy Smith wrote:
>>>         Current      Available
>>>         clocksource  clocksources
>>> -----------------------------------
>>> dom0   xen          xen
>>> foo2   tsc          xen tsc
>>> test0  xen          xen tsc jiffies
>>> bar0   xen          xen tsc


>> Add this to /etc/default/grub
>> GRUB_CMDLINE_XEN_DEFAULT="clocksource=pit"

Will that actually work given that dom0 does not list "pit" as an
available clocksource?

If/when I do reboot the dom0, what should I be looking for in the xm
dmesg and dom0 dmesg that will give some info about clock sources?


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