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Bug#674907: shifts the clock by 50 minutes unexplicably under a Xen dom0



On 2012-10-01, Jonathan Nieder wrote:
> Mauro wrote:
>
>> The shift time happens also in dom0 not only in domUs.
>
> Thanks.
>
> Just gathering information: some references:
>
>  http://thread.gmane.org/gmane.comp.emulators.xen.user/75486
>  http://thread.gmane.org/gmane.comp.emulators.xen.user/65530

Really interesting discussions, here's what I can extract from it.

Other people have the same problem, and have applied various
workarounds:

 * clocksource=jiffies - fails for us <http://news.gmane.org/find-root.php?message_id=%3c1346056240.25805.6.camel%40wotan2%3e>
 * clocksource=tsc <http://news.gmane.org/find-root.php?message_id=%3c1346148479.25805.47.camel%40wotan2%3e>
 * clocksource=pit, cpuidle=0 <http://news.gmane.org/find-root.php?message_id=%3c503BB696.3030603%40pa.metrocast.net%3e>

We'll be trying those 2 last workarounds and report back here.

> What's the newest kernel and hypervisor you've tried (since
> this should make it easier to get help from upstream)?

We haven't tried upgrading to backports - we are running plain squeeze.

-- 
The world is a dangerous place, not because of those who do evil,
but because of those who look on and do nothing.
                        - Albert Einstein

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