Path: utzoo!utgpu!cunews!bnrgate!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request
From: hgschulz@cs.umass.edu (Henning Schulzrinne)
Newsgroups: comp.sys.sun
Subject: High-resolution clock
Keywords: Hardware
Message-ID: <2634@brchh104.bnr.ca>
Date: 27 Apr 91 00:00:00 GMT
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Organization: Sun-Spots
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Approved: Sun-Spots@rice.edu
X-Original-Date: 23 Apr 91 20:25:57 GMT
X-Sun-Spots-Digest: Volume 10, Issue 90, message 3
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For some networking experiments, we need a fairly high-resolution clock
(sub-millisecond). I would be interested in

o  how does the clock work (interrupt driven? hardware register? other?)
o  experiences with the built-in timing mechanisms (resolution, 
   variability due to interrupt latencies and who knows what)
o  any add-on devices/software
   (even a cheap and fast parallel interface would do)

Thanks.

Henning Schulzrinne  (HGSCHULZ@CS.UMASS.EDU)
Department of Electrical and Computer Engineering
University of Massachusetts at Amherst
Amherst, MA 01003 - USA === phone: +1 (413) 545-3179 (EST); FAX: (413) 545-1249