[ntp:questions] stepping and slewing

Hal Murray hal-usenet at ip-64-139-1-69.sjc.megapath.net
Mon May 14 05:06:32 UTC 2007

>It is conceivable to run ntpd without -gq for a time in order to train
>the frequency offset, then kill the daemon leaving the kernel variables
>behind, and henceforth use only ntpd -gq.
>To support reading the frequency file, the ntpd -gq would have to figure
>out whether the kernel is available, read the frequency file and then do
>a ntp_adjtime() to initialize the frequency. But, we just did that
>during the training period.

Only if you haven't rebooted since the training period.

If you can't run ntpd all the time (for some strange reason),
fixing the drift would be on top of my list.

3 machines that I have handy all have a drift over 100 ppm.

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