[time-nuts] Graphs

Hal Murray hmurray at megapathdsl.net
Mon Jan 2 07:09:57 EST 2017

Here is data from a system using Google's NTP servers.

The Offset is the view from another system.  The drift is from the system 
Google said 13.9 uSec/sec.  That matches the step in the drift.

Note the overshoot at the end of the smear.  It's about 50 ms.  There is a 
similar blip at the start of the smear, but it's harder to see when it's 
riding on top of the sloped line.

The NIST UT1 server smeared the second over a whole day.  ??

Somebody asked about systems that "freeze" the clock for a second.  Linux, 
NetBSD, and FreeBSD all stepped the clock back.  An OpenBSD system was off by 
a second for about 4 hours.

These are my opinions.  I hate spam.

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