Re: Clarifications about PPS SHM content

[Paul Theodoropoulos]

On 3/26/2020 12:10 PM, Gary E. Miller wrote:
> Yo Paul!
>
> On Wed, 25 Mar 2020 20:14:00 -0700
> Paul Theodoropoulos via <address@hidden> wrote:
>
> > In my experience, at least on RPI 2 at least, ntpheat introduced too
> > much secondary 'noise' for lack of a better term - since rpi2 can
> > only bounce between 600Mhz and 1.4Ghz,
> Makes sense.  ntpheat was designed on a RasPi 3.  So not a problem.

Apologies - my units are RPI 3B+. The 3B+ only supports those two 
frequencies - no scaling between them- and that's the source of the added 
'noise'. Again, I can't be precise in defining the noise, since it's been 
a couple of years since I last used ntpheat - I don't have any of those 
old logs around.

Either way, in ascending order of stability - all other things being equal 
-  I would say:

freewheeling temps - lowest
ntpheat - better
insulated environment - best

--
Paul Theodoropoulos
www.anastrophe.com