[time-nuts] Comparing the BeagleBone Black & Raspberry Pi asNTP servers

[David J Taylor]

From: Neil Schroeder

The other key key key item is make sure you hand build yourself a 3.14 or
.16 kernel.

NS
=================================

Thanks, Neil.  I'm afraid I have neither the expertise nor the patience to 
do that, and to an extent this was intended to be an out-of-the-box 
comparison.  Doubtless adding a TCXO would improve performance as well, but 
I will leave that to someone else to try.

I was really interested to see how much effect the extra Ethernet latency of 
the Raspberry Pi added in a real-world scenario.  Thanks to Philip 
Gladstone, I have now discovered a way of significantly reducing that 
latency, so that the delay reported by NTP is reduced from ~0.51 to ~0.35 
milliseconds.

  http://www.satsignal.eu/ntp/RaspberryPi-notes.html#EthernetLatency

Cheers,
David
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Email: david-taylor at blueyonder.co.uk