How does ntp actually discipline the local clock? I have a gps received attached to a computer which is disciplined by a remote clock over an ADSL line. (Ie, the gps does not act as a refclock -- it is purely to measure the actual offset of the system. It is only the remote server that actaully acts the ntp reference source.) I can watch how ntp alters the local clock in response to remote offsets. The response is not linear. rather it is "curved" as though the rate of the local clock were exponentially eliminating the offset. But this is between two succesive runnings of the loopstats. Where is this behaviour determined? -- ie which routines determines the response of the system between to successive measurements of the offset?
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