[ntp:questions] R: Re: debugging strange ntp in virtual environment

Riccardo Castellani ric.castellani at alice.it
Thu Sep 19 07:47:19 UTC 2013

David Woolley  wrote:

>The basic problems with running ntpd on VMs are that 
simulated real time
>can run at variable rates, compared with true real time, 
and there can
>be large scheduling delays, which compromise the accuracy of 
offset measurement.

What means simulated real time can run at "variable rates" 

>Both can result in very large jitters and make it difficult for ntpd to

>work out the underlying clock frequency error.

Ok, so you suggest to run ntpd 
service (to give time to clients) on physical machine ?

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