[Info-vax] clock problems with OpenVMS x86 on VirtualBox

[terry-...@glaver.org]

On Monday, May 15, 2023 at 8:45:00 AM UTC-4, Johnny Billquist wrote:
> It used to be a *very* reliable clock source. Power grids used to 
> compensate for drift because of load, so that over 24 hours, you have a 
> very exact number of peaks on the power. All type of clocks were 
> designed with this clock source. Sadly, I think power grids no longer 
> are caring as much about the accuracy of the frequency. 

You can see the (near) real-time frequency deviation as well as the
cumulative clock drift that it causes here:
https://www.swissgrid.ch/en/home/operation/grid-data/current-data.html#frequency

5 or years ago, a Kosovo / Serbia dispute caused much larger drift -
on the order of 6 minutes. Do a web search for 'kosovo makes clocks 
run slow'