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From: NU043109@NDSUVM1.BITNET (K. Sankara Rao)
Newsgroups: mod.computers.vax
Subject: cpu timing on VAX/VMS
Message-ID: <8701100956.AA15892@ucbvax.Berkeley.EDU>
Date: Fri, 9-Jan-87 21:43:00 EST
Article-I.D.: ucbvax.8701100956.AA15892
Posted: Fri Jan  9 21:43:00 1987
Date-Received: Sat, 10-Jan-87 07:36:55 EST
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I want to write a program for measuring cpu time taken by each subroutine
in a program. The program is pretty large (about 300 subroutines) and a number
of subroutines take very little cpu time and are called repeatedly (some
tens of thousand times).Is there a package which can be linked to the
program package to be tested, which will do the job. I understand there is
DEC package which tests the pc every few seconds (of real elapsed time), but th
is would not be useful, since I want to measure the cpu time.
        Another question I have is : I see in the documentation that the cpu
time is given in tens of millisecs. I there any undocumented instruction for
obtaing the cpu time interval with a finer resolution? If there is no such
instruction is there any piece of code available to do the same using the
hardware timer (which seems to have a finer resolution)?

                                      Thanks in advance
                                      K. Sankara Rao
                             BITNET:  nu043109@ndsuvm1