✘minpoll=maxpoll from 1 to 8 - 'final' data

[Gary E. Miller]

Yo All!

New data for poll=8 (256 Sec).  Like before, all data is 90% bounds,
run over 24 hours or more.  Looks like 8 is clearly too high for
either of these PPS hosts.  So this is the end of this test series.

Xeon:

      Local Clock      Local Clock  Local Clock    PPS         PPS
Poll  Freq Offset 90%  Jitter 90%   Stability 90%  Offset 90%  Jitter 90%
1           495ppb         16.9µs      27.7ppt       39.0µs      26.7µs
2           332ppb         20.9µs      15.6ppt       40.6µs      29.7µs
3           165ppb         20.5µs       7.5ppt       34.6µs      27.9µs
4           465ppb         15.5µs       3.1ppt       22.5µs      20.1µs
5           435ppb         13.3µs       3.4ppt       17.7µs      16.9µs
6           570ppb         10.2µs       1.2ppt       34.2µs      16.3µs
7           330ppb         11.0µs       1.4ppt      102  µs      21.2µs
8           251ppb         43.6µs       2.1ppt      364  µs     103  µs

I will go with poll=5 (32 sec) for this host.  One could also argue for
poll=6 (64 sec).

RasPi3:

      Local Clock      Local Clock  Local Clock    PPS         PPS
Poll  Freq Offset 90%  Jitter 90%   Stability 90%  Offset 90%  Jitter 90%
1          1.1 ppm        0.43µs       2.3 ppt         1.6µs     0.34µs
2          1.1 ppm        0.08µs       2.9 ppt         2.2µs     0.20µs
3          0.5 ppm        0.18µs       1.9 ppt         3.0µs     0.56µs
4          1.12ppm        1.27µs       2.26ppt        10.3µs     4.11µs
5          1.36ppm        1.34µs       2.64ppt        11.4µs     4.43µs
6          1.4 ppm        3.3 µs       2.2 ppt        68. µs     9.7 µs
7          1.15ppm        1.14µs       1.77ppt         9.4µs     3.45µs
8          0.89ppm       39.9 µs       6.86ppt       977. µs    95.2 µs

Here poll=1 (2 sec) looks best to me.  A good reason to get poll=0 fixed
so I can test that.

The bottom line to what is the best poll value?  The answer: it depends...

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588




RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588
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