Hi everyone,
Some time ago there was a discussion about what effect the asymmetric
latency on DSL lines has on the ntp accuracy.
The generous people at Meinberg (http://www.meinberg.de/english/)
sent me one of their time servers (http://www.meinberg.de/english/
products/lantime.htm) to use for/in/with the pool.
I've had it at home to help test some of the new monitoring code I'm
working on and I can confirm what others have said: The "A" in ADSL
has minimal or no impact. I've put the current "peers" output below.
(The timeserver is completely awesome by the way; if you need a high
precision time server, I can highly recommend them).
- ask
$ /usr/sbin/ntpq -c pe miette.develooper.com
remote refid st t when poll reach delay
offset jitter
========================================================================
======
LOCAL(0) .LOCL. 12 l 36 64 377 0.000
0.000 0.008
+GENERIC(0) .GPS. 0 l 17 64 377 0.000
0.003 0.008
oPPS(0) .PPS. 0 l 44 64 377 0.000
0.003 0.008
-clock-a.develoo usno.pa-x.dec.c 2 u 58 64 377 9.305
0.169 1.762
-clock-b.develoo usno.pa-x.dec.c 2 u 51 64 377 9.132
0.626 3.511
+tick.ucla.edu .PSC. 1 u 53 64 377 8.760
0.559 2.659
gw.bn.dev gps.bn.dev 2 u 45 64 377 1.271
-4.187 0.252
-gatekeeper.no-s .GPS. 1 u 45 64 377 46.543
-1.401 0.562
--
http://askask.com/ - http://develooper.com/
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