Article View: comp.protocols.time.ntp
Article #867Re: uVAXII clock
From: Glenn Hollinger
Date: Thu, 19 Nov 1992 20:46
Date: Thu, 19 Nov 1992 20:46
20 lines
1571 bytes
1571 bytes
From article <1eg6e1INNnr4@ni.umd.edu>, by louie@sayshell.umd.edu (Louis A. Mamakos): > In article <1992Nov18.140049.199016@rrz.uni-koeln.de> schittel@geo.Uni-Koeln.DE (Christoph Schittel) writes: > >>Under VMS a uVAX keeps time very well. What about >>Ultrix on uVAX? Is it a good idea to use an old >>uVAXII (in constant temperature environment) as stratum >>1 server? > > Given that a MicroVAX-II CPU's clock only has a resolution of 20ms, > this is some new interpretation of "keeps time very well." The microVAX ticks along at 100 HZ, wich put the system clock resolution at 10ms, not 20ms. In practice, Xntp can keep the time with 5ms of a satellite receiver. Not a great time server compared to new stuff like recent SparcStations, but many people have microVAX IIs/2000s pretending to be doorstops. It is a reasonable use for this older equipment. It doesn't cost much and doesn't overtax these small systems. Glenn Hollinger, University of Saskatchewan.
Technical Details
Message-ID:
<1992Nov19.204641.7800@access.usask.ca>Path:
arc1-ca.pugleaf.net!sparky!uunet!newsflash.concordia.ca!mizar.cc.umanitoba.ca!access.usask.ca!sundeck.usask.ca!glennReferences:
<1eg6e1INNnr4@ni.umd.edu>Show Full Headers
Complete Article Headers
Newsgroups: comp.protocols.time.ntp Path: arc1-ca.pugleaf.net!sparky!uunet!newsflash.concordia.ca!mizar.cc.umanitoba.ca!access.usask.ca!sundeck.usask.ca!glenn From: glenn@sundeck.usask.ca (Glenn Hollinger) Subject: Re: uVAXII clock Message-ID: <1992Nov19.204641.7800@access.usask.ca> Originator: glenn@sundeck.usask.ca Sender: news@access.usask.ca (USENET News System) Nntp-Posting-Host: sundeck.usask.ca Reply-To: glenn@sundeck.usask.ca Organization: University of Saskatchewan References: <1eg6e1INNnr4@ni.umd.edu> Distribution: inet Date: Thu, 19 Nov 1992 20:46:41 GMT Lines: 20