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Article #749

Re: xntpd under SunOS 4.1.1

#749
From: Marion Hakanson
Date: Wed, 24 Apr 1991 22:09
28 lines
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>We recently installed SunOS 4.1.1. After doing so, xntp's
>compliance number (reported by the "lo" command in xntpdc)
>has gone up by an order of magnitude. It now stays at about
>0.001 or so. It used to sit at about 0.0002 or so.
>
>We also get "previous adjustment did not complete" messages
>in syslog.

You don't say what you were running before.  I just started running
xntpd under 4.1.1b, but on a SPARC IPC (lightly-loaded, so far).  We
do "tickadj -Asq" in rc.local right before starting xntpd.  It shows
compliance of -0.00002 or better, after a 24-hour settling in period
(drift compensation is at about -0.2666, with the stock "tick" of
10000 -- I haven't tried 9998 as others have suggested for SPARCs).

>The hardware is a relatively heavily loaded Sun 3/160 with 12 MB of
>RAM and a pair of ALM-Is. At its worst, there are 10 or 12 users

I have noticed that xntpd is more sensitive to a heavy load than the
regular ntpd.  And of course SunOS 4.x is worse (for clocks) than 3.5
was, but everyone knows that by now.  But if all you did was go from
4.0.x or 4.1 to 4.1.1, I have no further explanation for the increased
wobble -- all 4.x's have been pretty similar, NTP-wise, and 4.1.1
should be the best since 3.5.

-- 
Marion Hakanson         Domain: hakanson@cse.ogi.edu
                        UUCP  : {hp-pcd,tektronix}!ogicse!hakanson
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From: hakanson@CSE.OGI.EDU (Marion Hakanson)
Newsgroups: comp.protocols.time.ntp
Subject: Re: xntpd under SunOS 4.1.1
Message-ID: <9104242209.AA28386@cse.ogi.edu>
Date: 24 Apr 91 22:09:47 GMT
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