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- From: srp@babar.mmwb.ucsf.edu (Scott R. Presnell)
- Newsgroups: comp.sys.sgi
- Subject: Re: NTP Time?
- Message-ID: <srp.726165968@cgl.ucsf.edu>
- Date: 4 Jan 93 16:46:08 GMT
- References: <C08w41.65J@rahul.net> <ud00eh0@rhyolite.wpd.sgi.com> <1993Jan4.152944.22633@sol.ctr.columbia.edu>
- Sender: news@cgl.ucsf.edu (USENET News System)
- Organization: UCSF Computer Graphics Lab
- Lines: 26
-
- shenkin@still3.chem.columbia.edu (Peter Shenkin) writes:
-
- >2. Would there be any advantage to someone in my position's running NTP
- > rather than timeslave/timed? My position is as follows: several
- > machines at Columbia will be running NTP synched to a Higher Authority;
- > as I understand it, several hosts will be NTP servers in some sense,
- > to provide redundancy. We could synch to them either by means of
- > timeslave/timed or else by running NTP ourselves. My understanding
- > so far is that the advantage of running NTP would be a smaller load
- > on system/network resources (though I find it hard to imagine that
- > timeslave/timed constitutes a heavy load), and possibly the ability
-
- There is a substantial difference in the algorithms used to keep and
- calculate time offests, timeslave is similar to ntpd in result, but timed
- averages over a network, I believe - but VS would be the best to tackle
- that.
-
- I cannot answer to machine load, but to network load there is an advantage
- - say to timeslave: timeslave uses 10 pings to ntp's *one.* (atleast simple
- ntpd - I don't run xntpd) my understanding is that ntpd gets you the
- highest precision per network buck (accuracy is up to you).
-
- - Scott Presnell (srp@cgl.ucsf.edu)
- --
-
- - Scott Presnell (srp@cgl.ucsf.edu)
-