Re: Clarifications about PPS SHM content

[Martin Boissonneault]

Hi Gary,
I hope this pic answers your question :

This rPi is unfortunately not dedicated to timekeeping, it also runs ADS-B and 
UAT aircraft receivers. I did recompile the kernel to enable 250Hz tick and 
force the tick (I don't have my notes ATM), and disabled Energy Efficient 
Ethernet. 

The precision I have is way above my needs, but if it's worth doing, it's worth 
overdoing ;-)

If you think I can improve those figures, ping me privately so I can start a 
thread on the ntpsec mailing list.

Thanks,
Martin Boissonneault
address@hidden
Sent from my phone

> On Mar 20, 2020, at 18:03, Gary E. Miller <address@hidden> wrote:
> 
> Yo Martin!
> 
>> On Fri, 20 Mar 2020 17:35:25 -0400
>> Martin Boissonneault <address@hidden> wrote:
>> 
>> I /noselect/ed the GNSS serial refclock. I don't think I can optimize
>> it better on my rPi:
> 
> Your mean is good, but without seeing the standard distribution hard
> to say how much better you could get.  Getting the last bit of
> accuracyy takes some doing.
> 
>> I just wanted to tank you for the help in getting those results. I 
>> subscribed to the ntpsec users list, so any further questions about
>> it will be there now.
> 
> Cool.
> 
> RGDS
> GARY
> ---------------------------------------------------------------------------
> Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
>    address@hidden  Tel:+1 541 382 8588
> 
>        Veritas liberabit vos. -- Quid est veritas?
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