[ntp:questions] Peer Review of ntpq -c rv

David J Taylor david-taylor at blueyonder.co.uk.invalid
Thu Mar 8 13:40:05 UTC 2012

> My system with Sure GPS and PPS :
> ident            mean    rms    max
>    0.000  0.004  0.030
> The 30 usec offsets are during the morning at time the
> system logs are created and rotated.
> I'll try to insulate the xtal when I next have to move
> the pc but I don't know that the blips in offset are
> caused by increase in temperature.
> David

My offset excursions are almost certainly temperature-related:


happening at the time when the central heating comes on!  The are no 
regular tasks run on that PC.  On my Windows PCs, I use SpeedFan to 
monitor various temperatures (disk, CPU).  I also have some very cheap 
external temperature probes which work over USB for external temperature 
and humidity:




More information about the questions mailing list