[ntp:questions] ntp_adjtime and interval

Nickolay Orekhov nowhere at mail.ru
Wed May 15 05:34:21 UTC 2013


You should use "maxpoll n" option. The length of the intervall will be 2^n
seconds.
Example configuration file should look like this:

server 192.168.0.2 maxpoll 3



2013/5/15 Miguel Gonçalves <miguel.barbosa.goncalves at gmail.com>

> Hi!
>
> I am trying to figure out why NTP takes so long to react to oscillator
> changes...
>
> When checking ntptime on startup I see that the NTP daemon is using
> PLL and starts the adjustment interval at 8 s. It then increases to
> 16, 32, 64, 128 and stops at 256.
>
> I read in the documentation that this limit should be 128 but is now 256.
>
> --- start from http://www.ntp.org/ntpfaq/NTP-s-config-adv.htm ---
> intervals 57 says that there were 57 calibration intervals. When PPS
> pulses are arriving, this number should increase. Each frequency
> adjustment requires a good calibration interval. The length of the
> current calibration interval can be found as interval 128 s (128
> seconds is the default maximum length). Remaining numbers count
> abnormal conditions as explained below.
> --- end ---
>
> How can I make it stop earlier? At 64 s for example?
>
> TIA,
> Miguel
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