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- Path: sparky!uunet!olivea!sgigate!odin!sgi.com!scotth
- From: scotth@oniboshi.corp.sgi.com (Scott Henry)
- Newsgroups: comp.protocols.time.ntp
- Subject: Re: xntp on sgi's
- Message-ID: <SCOTTH.92Dec29204829@oniboshi.corp.sgi.com>
- Date: 30 Dec 92 01:48:29 GMT
- References: <1992Dec30.001810.21990@wuecl.wustl.edu>
- Sender: news@odin.corp.sgi.com (Net News)
- Distribution: na
- Organization: Silicon Graphics Inc, Mountain View, CA
- Lines: 49
- In-Reply-To: heather@wuee1.wustl.edu's message of 30 Dec 92 00: 18:10 GMT
- Nntp-Posting-Host: oniboshi.corp.sgi.com
-
-
- >>>>> In article <1992Dec30.001810.21990@wuecl.wustl.edu>, heather@wuee1.wustl.edu (Heather A. Drury) writes:
-
-
- heather> I am trying to get xntp to run on an SGI Indigo. The daemon xntpd
- heather> exits right away, apparantly because "tickadj" and "tick" are not
- heather> used in the kernel. Is there any way around this or am I out of luck?
-
- Some time ago, I ported xntp (NTP V2) to the SGI platform. Patches are
- available for anonymous FTP on sgigate.sgi.com, in the directory
- ~ftp/net-services/xntp. In addition is a compressed tar file
- containing a set of binaries built with those patches. Since I'm an
- SGI employee, I gotta give the full disclaimer (copied out of the
- README file in that directory):
-
- THIS CODE IS COMPLETELY UNSUPPORTED.
-
- This software is provided without support and without any obligation on the
- part of Silicon Graphics, Inc. to assist in its use, correction, modification
- or enhancement. There is no guarantee that this software will be included
- in future software releases, and it probably will not be included.
-
- THIS SOFTWARE IS PROVIDED "AS IS" WITH NO WARRANTIES OF ANY KIND INCLUDING THE
- WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
-
- Disclaimer disclaimer: I will, as my time permits, help you if you
- have problems compiling or installing this software. I am also
- interested in bug reports that apply to the SGI port. Please address
- bugs/problems/questions to "scotth@sgi.com".
-
-
- heather> Also, does anyone know if I can succesfully synchronize two Indigo
- heather> clocks running at 1200Hz to within 5 (or less) milliseconds, or am
- heather> I dreaming?
-
- We use a mix of xntpd and timed internal to SGI, and offsets are
- mostly less than 30 msec. Most of these are not managed to minimize
- offset (and in fact most are using timed off of an xntpd time master).
- Especially with fast clocks on (and precision adjusted accordingly),
- with careful tuning you could probably keep mostly 1-2 msec offsets
- within a small group of hosts. Remember that default clock precision
- is 10msec, the dispersions seen on the local net (I'm just checking as
- I type) are on the order of one clock tick, or they are way off (hmm,
- lots of hosts to check for missing time daemons....).
-
- Good luck on your project!
-
- =-=-=-=-=
-