From: Marc Balmer (marcmsys.ch)
Date: Tue Oct 24 2006 - 08:57:19 CDT

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Quoting Henning Brauer <henningcvs.openbsd.org>:

> CVSROOT: /cvs
> Module name: src
> Changes by: henningcvs.openbsd.org 2006/10/24 06:23:39
>
> Modified files:
> usr.sbin/ntpd : ntp.c ntpd.h sensors.c
>
> Log message:
> timedelta sensors are usually updated very often, but we used to query
> them only every 30 seconds. now query them every 5,and take the median
> value from 7 queries as sensor value. this takes outliers out of the
> equation and makes the overall result much better, especially for
> sensors with heavy jitter (like nmea for now)

Just for the records, udcf(4) updates once per minute at most.

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