Best practices question

Patrick 201905-ntpsec at jslf.app
Wed Jun 26 03:06:02 UTC 2019


On 2019-06-25 19:07, Paul Theodoropoulos wrote:
> Is this any different from declaring the 'nohz=off' in the cmd.txt boot file
> in raspbian?

Not any differnt. ;)

> Thanks for the tip re ntpsec directly without gpsd. I'll see what happens.

An ntpsec direct to the RasPi Hat configured with:

	refclock nmea        refid GPS path /dev/ttyAMA0 baud 9600 minpoll 4 maxpoll 4 ppspath /dev/pps0 flag1 1 mode 1 time2 0.480

Yields the following...

     remote           refid      st t when poll reach   delay   offset   jitter
===============================================================================
oNMEA(0)         .GPS.            0 l    7   16  377   0.0000  -0.0026   0.0002
+17.253.82.253   .SHM.            1 u   31   32  377   2.5711  -0.0826   0.0126
+118.189.138.5   .NMC1.           1 u   31   32  377   4.2364  -1.5600   2.3600
+218.186.3.36    .GPS.            1 u   23   32  377   2.5162  -0.1025   0.0106


Patrick


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