| Re: [chrony-users] Validating PHC operation on Microsoft VM |
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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] Validating PHC operation on Microsoft VM
- From: Mingye Wang <arthur200126@xxxxxxxxx>
- Date: Wed, 5 Mar 2025 12:32:57 +0800
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The hypervisor is fine -- in the sense that it's allowing guest
programs to run, and the frequency isn't too variable for chrony to
keep its own time from NTP. It's just the host time is a bit off, but
as you can see chrony is correctly not using it by marking it as '?'
(unusable, check sources -v), so you end up getting the right time
from Google.
PS: Your image is well received.
--
Mingye Wang (Artoria2e5)
On Wed, Feb 26, 2025 at 12:40 AM Steven Sommars
<stevesommarsntp@xxxxxxxxx> wrote:
>
>
>> If you keep the refclock enabled with the nearby NTP sources, will it
>> be marked as a falseticker?
>
>
> PHC (noselect) plus 4 of the Google anycast
> chronyc -n sources;chronyc -n sourcestats
> MS Name/IP address Stratum Poll Reach LastRx Last sample
> ===============================================================================
> #? PHC0 0 3 377 5 +29ms[ +29ms] +/- 17us
> ^+ 216.239.35.0 1 6 377 52 -512us[ -512us] +/- 5576us
> ^* 216.239.35.12 1 6 377 53 -80us[ -75us] +/- 5068us
> ^- 216.239.35.4 1 6 377 50 +566us[ +566us] +/- 18ms
> ^- 216.239.35.8 1 6 377 59 +672us[ +677us] +/- 18ms
> Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev
> ==============================================================================
> PHC0 6 3 40 -8.207 10.836 +29ms 39us
> 216.239.35.0 19 12 1162 -0.074 1.127 -60us 415us
> 216.239.35.12 64 38 67m +0.000 0.101 -46us 281us
> 216.239.35.4 64 35 67m +0.020 0.199 +46us 552us
> 216.239.35.8 64 30 68m +0.053 0.172 -8862ns 510us
>
> Looks like a hypervisor problem.
>
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