Prof interprets the file produced by the monitor subroutine. Under default modes, the symbol table in the
named object file (a.out default) is read and correlated with the profile file (mon.out default). For each
external symbol, the percentage of time spent executing between that symbol and the next is printed (in
decreasing order), together with the number of times that routine was called and the number of milliseconds
per call. If more than one profile file is specified, the output represents the sum of the profiles.
In order for the number of calls to a routine to be tallied, the -p option of cc, f77 or pc must have been
given when the file containing the routine was compiled. This option also arranges for the profile file to be
-a all symbols are reported rather than just external symbols.
-l the output is sorted by symbol value.
-n the output is sorted by number of calls
-s a summary profile file is produced in mon.sum. This is really only useful when more than one profile
file is specified.
-v all printing is suppressed and a graphic version of the profile is produced on the standard output for
display by the plot(1) filters. When plotting, the numbers low and high, by default 0 and 100, may be
given to cause a selected percentage of the profile to be plotted with accordingly higher resolution.
-z routines which have zero usage (as indicated by call counts and accumulated time) are nevertheless
printed in the output.
mon.out for profile
a.out for namelist
mon.sum for summary profile