[ntp:questions] PSYCHO PC clock is advancing at 2 HR per second

unruh unruh at invalid.ca
Tue Mar 20 04:09:29 UTC 2012

On 2012-03-20, Ron Frazier (NTP) <timekeepingntplist at c3energy.com> wrote:
> Hi all,
> I just came home from supper to the most NOT charming experience.  I had 
> left with my PC clock syncing nicely to my Globalsat BU-353 GPS.  When I 
> came home, I found the clock said Aug 2014 and visually could see that 
> the clock was advancing at a rate of about 2 HR per actual second.  The 
> Meinberg screen said it was locked into the local clock and the Meinberg 

And you have local clock anywhere in the configuration why? It is dumb
as you have discovered. 

> screen appeared to be updating about twice per second rather than once 
> ever 10 seconds.  It said that the preferred clock was LOCL 
>  I don't know what the heck happened, but these anomalies 
> are getting really old.  Hopefully the Sure board will do better.  Oh, 
> by the way, I shut down NTPD and the clock kept advancing the same way.  

It sounds like the system has reset the timer interrupt advance.

> 2 reboots appear to have fixed it.  I've removed LOCL from the config 
> file.  Here are some links to some log and conf files if anyone is 
> interested.  Note the dates at the end.  I've got 1200 log files in 
> between these start and end dates.
> http://dl.dropbox.com/u/9879631/ntp.conf%20psycho%20clock
> http://dl.dropbox.com/u/9879631/loopstats.20120319-2-above-priority-gpgga96-poll-3-6%20psycho%20clock
> http://dl.dropbox.com/u/9879631/loopstats.20120320%20psycho%20clock
> http://dl.dropbox.com/u/9879631/loopstats.20120321%20psycho%20clock
> http://dl.dropbox.com/u/9879631/loopstats.20120322%20psycho%20clock
> http://dl.dropbox.com/u/9879631/loopstats.20120323%20psycho%20clock
> http://dl.dropbox.com/u/9879631/loopstats.20140112%20psycho%20clock   
> note the date far into the future
> http://dl.dropbox.com/u/9879631/loopstats.20140113%20psycho%20clock
> http://dl.dropbox.com/u/9879631/peerstats.20120319-2-above-priority-gpgga96-poll-3-6%20psycho%20clock
> http://dl.dropbox.com/u/9879631/peerstats.20120320%20psycho%20clock
> http://dl.dropbox.com/u/9879631/peerstats.20120321%20psycho%20clock
> http://dl.dropbox.com/u/9879631/peerstats.20120322%20psycho%20clock
> http://dl.dropbox.com/u/9879631/peerstats.20120323%20psycho%20clock
> http://dl.dropbox.com/u/9879631/peerstats.20140824%20psycho%20clock   
> note the date far into the future
> http://dl.dropbox.com/u/9879631/peerstats.20140825%20psycho%20clock
> Sincerely Frustrated,
> Ron

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