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On 3/12/19 11:08, NTPfiend wrote:<br>
<blockquote type="cite"
cite="mid:8444ddfe-d122-cc66-2990-c0a290003f3a@goldhill.co.uk">
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No obvious difference [...but]<br>
</blockquote>
Yup - all those tiny tweaks do make tiny differences. But tweaking
the system is half the fun. :)<br>
<blockquote type="cite"
cite="mid:8444ddfe-d122-cc66-2990-c0a290003f3a@goldhill.co.uk"> <br>
Third: ntpstats were slowly moved (hourly cronjob) to another
machine (an Odroid HC-2) running ntpsec (which compiled easily and
quickly). This has been running over 24 hours now <a
class="moz-txt-link-freetext"
href="http://www.goldhill.uk/ntpvizplots/index.html"
moz-do-not-send="true">http://www.goldhill.uk/ntpvizplots/index.html</a>
and has completely solved the problem. No nasty perfomance hits
and the R Pi has settled down nicely.<br>
</blockquote>
<br>
Nice looking results. Ambient temperature fluctuations are now your
biggest challenge. You'll also find that generating hourly or other
sub-daily increments is pretty "lightweight" (in relative terms). I
generate 1, 3, 6, 12, 24 and 72 hour stats once per hour - which it
takes ntpviz about 45 minutes to iterate through - then the seven
day stats daily at 4am. The one hour stats only take four minutes to
generate however.<br>
<blockquote type="cite"
cite="mid:8444ddfe-d122-cc66-2990-c0a290003f3a@goldhill.co.uk">
[...but] previously any small offset changes or jitter were
rendered invisible by the spikes, now much more visible with the
much reduced range of the y-axes. I'm wondering what else I will
now notice !<br>
</blockquote>
You can also change the clip option to deal with the occasional,
inevitable spikes that will still happen (noise in your power, gps
loss of signal, etc). <br>
<br>
<pre class="moz-signature" cols="72">--
Paul Theodoropoulos
<a class="moz-txt-link-abbreviated" href="http://www.anastrophe.com">www.anastrophe.com</a></pre>
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