Re: [Xen-devel] HVM Migration of domU on Qemu-upstream DM causes stuck system clock with ACPI

[Diana Crisan <dcrisan@xxxxxxxxxxxx>]

Hello,

>On Mon, May 20, 2013 at 11:38:45PM +0100, Alex Bligh wrote:
>> Konrad,
>> 
>> --On 20 May 2013 15:28:52 -0400 Konrad Rzeszutek Wilk
>> <konrad.wilk@xxxxxxxxxx> wrote:
>> 
>> >It was actually David (CC-ing him here). Alex, when you boot the hosts,
>> >are the RTC times the same? (date?)
>> 
>> I believe they boot with ntpdate and run ntp, so the wallclock times are
>> the same. I haven't specifically checked the CMOS clock times if that's
>> what you meant - I'm not even sure how one does that - but I believe
>> ntp writes to the CMOS RTC these days.

>11 minutes after ntpd has started.


I have checked our machines and they aren't running ntpd, but they were 
synchronised with ntpdate. The date command showed the wallclock was in sync 
and clock -r showed the rtc was also in sync. Both cases have a delay of at 
most 1 second.

I ran my tests again to ensure they are still in sync, which they are.


-- 
Diana Crisan 



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