On 02/07/20 17:00, time-nuts-requ...@lists.febo.com wrote:
Experiments in NTP performance (Watson Ladd)
Hi,
I may have something to contribute to this, Built an
experimental system last year. Two or three surplus spares or repair
grade and refurbished time servers on a separate subnet, interrogated
by a Mini ITx PC box running FreeBSD / ntpd. 1 PPS support via
the serial port dcd line. Registered with ntp.org, but not online
yet as still confirming system is rock solid. On a ups and has been
running now for months. Typical output from ntpq -p is:
root@ntp-host:/etc # ntpq -p
remote refid st t when poll reach delay offset jitter
=====================================================================
oPPS(0) .PPS. 0 l 2 8 377 0.000 0.001 0.001
*192.9.200.168 .GPS. 1 u 45 64 377 0.189 -0.010 0.024
+192.9.200.169 .GPS. 1 u 19 64 377 0.378 -0.012 0.037
-ntp0.uk.uu.net .GPS. 1 u 42 64 377 16.940 0.352 0.129
Two local sources and one external, for a sanity check...
Regards,
Chris
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