[ntp:questions] Why is my poll interval stuck at 64 seconds?

Daniel Kabs daniel.kabs at gmx.de
Mon Jun 22 16:22:01 UTC 2009

Hello there,

I have used NTP on my Linux computers for years and I am used to the fact 
that nptd after some time will increase the poll interval to 1024 

Now I have a desktop PC (running Ubuntu Linux) that synchronizes against a 
Debian server. My PC's offset is less than a microsecond but the poll 
interval is stuck at 64 seconds. 

I wonder why this is.

Any help is appreciated.


PS: Attaching some output from ntpq

On the desktop pc:
$ ntpq -c peer
 remote           refid      st t when poll reach   delay   offset  jitter
*server     3 u   60   64  377    0.122    0.500   0.110

$ntpq -c rv
assID=0 status=0664 leap_none, sync_ntp, 6 events, event_peer/strat_chg,
version="ntpd 4.2.4p4 at 1.1520-o Tue Jan  6 15:51:34 UTC 2009 (1)",
processor="i686", system="Linux/2.6.24-20-generic", leap=00, stratum=4,
precision=-20, rootdelay=48.706, rootdispersion=42.709, peer=31965,
reftime=cdea2bdb.bd109bdf  Mon, Jun 22 2009 18:12:11.738, poll=6,
clock=cdea2d2b.0b06f0ad  Mon, Jun 22 2009 18:17:47.043, state=4,
offset=0.500, frequency=-30.177, jitter=0.122, noise=0.075,
stability=0.010, tai=0

On the Debian server:
$ntpq -c rv
assID=0 status=06f4 leap_none, sync_ntp, 15 events, event_peer/strat_chg,
version="ntpd 4.2.4p4 at 1.1520-o Mon May 11 20:13:01 UTC 2009 (1)",
processor="x86_64", system="Linux/", leap=00, stratum=3,
precision=-20, rootdelay=15.951, rootdispersion=67.235, peer=5337,
reftime=cdea1549.07434ab4  Mon, Jun 22 2009 16:35:53.028, poll=10,
clock=cdea1609.986f7690  Mon, Jun 22 2009 16:39:05.595, state=4,
offset=2.330, frequency=1.229, jitter=1.985, noise=0.803,
stability=0.167, tai=0

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