Folks,
Thanks for all the help. I've put up a simple Web page showing the program
and its results here:
https://www.satsignal.eu/ntp/Raspberry-Pi-ntpheat.html
A good gain on that Raspberry Pi in a centrally heated room and nearer the
radiator than it should be.
Cheers,
David
--
From: folkert
You can also keep the GPU busy. That'll work as well with the bonus that
the main cpu stays mostly idle (iirc) for other tasks.
https://vanheusden.com/ntpheat.cpp
requires https://github.com/mn416/QPULib
===
That's neat! Thanks!
[sorry for breaking the threading, I'm replying from the list archive since
gmane.io does not have this list anymore]
Hi David,
[ntpheat]
> I didn't know about that program and I'd like to try it here. A neat idea.
> Is it available stand-alone - ready to run? I could compile it here given
>
> Thanks, Adam and Hal. I will have a play. I need to decide which of my
> flock to use, as some already sit in a fairly stable environment, and others
> are doing real work which may be affected by running the CPU at 100%.
>
> OK, there's a non-critical one rather nearer to a CH radiator than
The source code is here:
https://github.com/ntpsec/ntpsec/blob/master/contrib/ntpheat
It imports ntp.util. But from my rudimentary knowledge of Python I see that
it only uses it to get version number. So I think removing lines 24-29 and
51-53 should make it work without ntpsec.
Cheers,
Adam
On Mon, Mar 2, 2020 at 7:58 PM David J Taylor via time-nuts <
time-nuts@lists.febo.com> wrote:
> It's ~65°C on purpose. I'm using ntpheat (
> https://blog.ntpsec.org/2017/02/01/heat-it-up.html) to keep stable
> temperature no matter what it does. It turns my raspberry into kind of OCXO
> :)
>
> I didn't know about that program and I'd like to try it here. A neat idea.
> Is it available stand-alone - ready to run? I could compile it here given
> the source, but not if it has dozens of dependencies on NTPsec, which I
> don't use.
It's stand alone python code. There is nothing
It's ~65°C on purpose. I'm using ntpheat (
https://blog.ntpsec.org/2017/02/01/heat-it-up.html) to keep stable
temperature no matter what it does. It turns my raspberry into kind of OCXO
:)
Anyway, ntpheat runs there for months, so I guess it's not the culprit.
Cheers,
Adam
On Mon, Mar 2, 2020 at 5:23 PM David J Taylor via time-nuts <
time-nuts@lists.febo.com> wrote:
> Hi!
>
> For several weeks I'm seeing strange behavior of my Raspberry Pi based NTP
> server with Uputronics GPS PPS expansion board (Ublox MAX-M8Q chip).
> Several weeks ago the mean daily jitter was
Hi!
For several weeks I'm seeing strange behavior of my Raspberry Pi based NTP
server with Uputronics GPS PPS expansion board (Ublox MAX-M8Q chip).
Several weeks ago the mean daily jitter was below 300 ns, offset didn't
exceed ±1 µs, provided no restart or configuration change was made. Now the
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