[time-nuts] Beaglebone NTP server

[Michael Tatarinov]

Hello

Try to run ntpd with realtime priority (options '-N' or '-P priority').
Your an hourly jobs can be executed several slower but it may improve
the time synchronization.

2014-12-09 23:45 GMT+04:00, Frister <frister at gmx.net>:
> Hi David,
> Yes, You mean the hourly dips? That is caused by the the VLF receive
> software that
> is running on the same PI. It makes hourly recordings of DC to 24 Khz
> with a USB soundcard. The CPU is running at max capacity most of the
> time.
>
> Perhaps it is now time for a dedicated PI, that only has the task of
> playing Stratum One.
>
> If anyone is interested:
> https://pivlf.wordpress.com/
>
>
> 73, Frits W1FVB
>
>
>
> On 12/9/14, David J Taylor <david-taylor at blueyonder.co.uk> wrote:
>> Thanks for pointing this out David,
>> Compiling an new kernel was holding me back. I followed your instructions
>> and
>> everything works beautiful. The PI that is running the PPS timekeeping
>> with
>>
>> NTP
>> is serving as a VLF receiver as well. Taxing the poor CPU, but with
>> kernel PPS support
>> the NTP daemon has become way happier! (see attachment)
>>
>> 73, Frits W1FVB
>> ==============================================
>>
>> Oh, yes!  That's much better, Frits!  Delighted to have helped!
>>
>> (Although it now shows up an hourly periodicity - any idea what might be
>> causing that?)
>>
>> 73,
>> David GM8ARV
>> --
>> SatSignal Software - Quality software written to your requirements
>> Web: http://www.satsignal.eu
>> Email: david-taylor at blueyonder.co.uk
>>
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>
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