🚀 go-pugleaf

I have be attempting to use the xntpd program from louie.udel.edu.  I had
no trouble installing it on a Sun 4/280.  But when I tried to install it
on a Sun 4/60 (SPARC 1) it did not work correctly.  The first problem is
that the program generates several hundred messages to the syslog.
A sample follows:

Mar 25 07:46:29 odessa xntpd[2358]: Previous time adjustment didn't complete
Mar 25 07:53:25 odessa last message repeated 14 times
Mar 25 07:53:57 odessa xntpd[2358]: Previous time adjustment didn't complete
Mar 25 07:58:57 odessa last message repeated 10 times
Mar 25 07:59:25 odessa xntpd[2358]: Previous time adjustment didn't complete
Mar 25 08:06:25 odessa last message repeated 14 times
Mar 25 08:06:57 odessa xntpd[2358]: Previous time adjustment didn't complete

When I run "xntpdc -c peers" I see that the requested adjtime is not always
taking place.  As a matter of fact the offset is as likely to increase as
to decrease.  The net result is that the clock accuracy is about .2 seconds
as opposed to the > .02 second I get on the 4/280.

My best guess is that the when the Previous time adjustment does not complete
the next time adjustment messes things up.  It also seems likely the the
root problem is that the SPARC 1 can not complete an adjtime in under
4 seconds.  From the man pages for adjtime it says:

     The adjustment is effected by speeding up (if that amount of
     time is positive) or slowing down (if that amount of time is
     negative) the system's clock by some small percentage,  gen-
     erally  a fraction of one percent.  Thus, the time is always
     a monotonically increasing function.  A time correction from
     an  earlier  call to adjtime() may not be finished when adj-
     time() is called again.

No where does it mention how long it should take to slew the clock.

By the way, the error messages can be suppressed by commenting out line
357 in the program ntp_unixclock.c and remaking xntpd.

If anyone has a solution to this problem please let me know.

--
Craig Zook   -   zook@sweetpea.jsc.nasa.gov
Systems Engineeering and Administration
McDonnell Douglas Space Systems Corp. - Engineering Services Division
(713) 283-4206