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From: k2@charly.bl.physik.tu-muenchen.de (Klaus Steinberger)
Newsgroups: comp.protocols.time.ntp
Subject: Re: xntp funny
Message-ID: <k2.659693555@woodstock>
Date: 27 Nov 90 08:12:35 GMT
References: <9011270027.AA11598@sunspot.sunspot.noao.edu>
Sender: news@lan.informatik.tu-muenchen.dbp.de
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mcgraw@SUNSPOT.SUNSPOT.NOAO.EDU (Robert McGraw) writes:

>Below is a script file. I tried running ntpq and xntpdc today and have
>started getting these unknow service messages. I have not run these
>commands for a couple weeks (out of town) so I am not sure when this
>started happening. I killed xntpd and restarted and still having the
>same problem but ps shows xntpd running and it seem to start up ok.
>Does anyone out their have the answer to what is causing this?????

>Famous last words "I have not modified any thing on the system for
>several months".

>Script started on Mon Nov 26 17:10:14 1990
>sunspot# ntpq
>ntpq: ntp/udp: unknown service
>sunspot# xntpdc
>xntpdc: ntp/udp: unknown service
>sunspot# 
>script done on Mon Nov 26 17:10:31 1990

Maybe that is a funny thing in YP. Are you running YP?
We are troubled through YP problems looking like this.

Sometimes ypserv returns NULL on a getservbyname.
We were troubled through this problem on our PCS/Cadmus
with a Implementation of NFS3.0, until PCS found the problem.
It was a bug in ypserv caused by simultaneous accesses.

Now we have a new server machine (CDC4330/CDC4680) with NFS 4.0,
and the bug has reappeared. I suppose that this bug runs through
all YP-Implementations which are derived from SUN code.

The bug will be reproducible by a simple programm calling getservbyname
in and endless loop. Run it twice, and the bug appears.

Sincerely,
Klaus Steinberger
Klaus Steinberger               Beschleunigerlabor der TU und LMU Muenchen
Phone: (+49 89)3209 4287        Hochschulgelaende, D-8046 Garching, West Germany
BITNET:  K2@DGABLG5P            Internet: k2@charly.bl.physik.tu-muenchen.de