[ntp:questions] Negative delay in 4.2.6p2
Marco Marongiu
brontolinux at gmail.com
Tue Oct 11 09:10:36 UTC 2011
Hi all
Yes, negative delay. We see this on one of our clients (real IPs concealed):
> $ ntpq -c pe -c as
> remote refid st t when poll reach delay offset jitter
> ==============================================================================
> -10.100.100.142 22.222.222.6 3 m 66 64 376 -3.302 1.517 0.022
> +10.100.100.141 22.222.222.7 3 m 63 64 376 -6.828 0.083 0.025
> +10.100.100.161 222.2.22.84 3 m 54 64 376 -7.786 -0.756 0.035
> *10.100.100.162 22.222.222.3 3 m 50 64 376 0.314 0.609 0.031
>
> ind assid status conf reach auth condition last_event cnt
> ===========================================================
> 1 61991 731a no yes ok outlyer sys_peer 1
> 2 61992 741a no yes ok candidate sys_peer 1
> 3 61993 741a no yes ok candidate sys_peer 1
> 4 61994 761a no yes ok sys.peer sys_peer 1
It's a multicast client with symmetric authentication, running ntpd
4.2.6.p2 on Linux Debian Squeeze. From our munin graphs, this started to
happen three weeks ago, and all in a sudden.
Is it a bug?
Ciao
-- bronto
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