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From: vancleef@iastate.edu (Van Cleef Henry H)
Newsgroups: comp.unix.ultrix
Subject: Clock granularity on MIPS workstations
Summary: Need to know how often time is updated
Keywords: ultrix  timeval clock
Message-ID: <1991Jun7.214327.21897@news.iastate.edu>
Date: 7 Jun 91 21:43:27 GMT
Sender: news@news.iastate.edu (USENET News System)
Organization: Iowa State University, Ames, IA
Lines: 15
Originator: vancleef@tbird.cc.iastate.edu

I am doing some profile-type testing in which I use the gettimeofday(2)
function, which returns a struct timeval with seconds and microseconds.

What is the granularity of the clock in updating the microsecond field.
That is, how many microseconds are added?  

Hardware involved is DECstation 2100, 3100, and 5000, running Ultrix 
4.1 (soon to update to 4.2).  If the values are different on different
workstations, I need to know this too.  


-- 
Hank van Cleef  
vancleef@iastate.edu	Iowa State University, Ames. Ia.
tmn!vancleef		The Union Institute, Cincinnati, Oh.