[comp.sys.att] Timer resolution on a 3B1

billg@cs.tamu.edu (William Gunshannon) (10/12/90)

Is there any way to get finer than 1 second timer resolution on the
3B1??  I am told there is a system for this in the newer Revs of SYS V,
but is there any way (even sneaking in thru the back door) that I can use
on a 3B1??  It doesn't need to be portable.

bill gunshannon
bill@platypus.uofs.edu

thad@cup.portal.com (Thad P Floryan) (10/22/90)

billg@cs.tamu.edu (William Gunshannon) in <9019@helios.TAMU.EDU> writes:

	"Is there any way to get finer than 1 second timer resolution on the
	3B1??  [...] "

Not clear for what purpose you need a "timer."  I just noticed one reply that
used a "busy-wait" (or "spin busy) loop to delay for a specified time.

If you just need a time-of-day resolution, you can get 1/60 second increments
using the times(2) routine as I posted a month or so ago re: my version of the
gettimeofday(2); actually the resolution is platform dependent ... see ``HZ''
in /usr/include/sys/param.h for the value on YOUR system (it's 60 on the 3B1).

Thad Floryan [ thad@cup.portal.com (OR) ..!sun!portal!cup.portal.com!thad ]