PROF(1)             UNIX Programmer's Manual		  PROF(1)



NAME
     prof - display profile data

SYNOPSIS
     prof [ -a ] [ -l ] [ -n ] [ -z ] [ -s ] [ -v [ -_l_o_w [ -_h_i_g_h
     ] ] ] [ a.out [ mon.out ... ] ]

DESCRIPTION
     _P_r_o_f interprets the file produced by the _m_o_n_i_t_o_r subroutine.
     Under default modes, the symbol table in the named object
     file (_a._o_u_t default) is read and correlated with the profile
     file (_m_o_n._o_u_t default).  For each external symbol, the per-
     centage 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 _c_c, _f_7_7 or _p_c must have been given when the
     file containing the routine was compiled.	This option also
     arranges for the profile file to be produced automatically.

     Options are:

     -a   all symbols are reported rather than just external sym-
	  bols.

     -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 _m_o_n._s_u_m. 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 _p_l_o_t(1) filters.  When plotting, the numbers _l_o_w
	  and _h_i_g_h, 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.

FILES
     mon.out  for profile
     a.out    for namelist
     mon.sum  for summary profile




Printed 11/26/99	 April 29, 1985                         1






PROF(1)             UNIX Programmer's Manual		  PROF(1)



SEE ALSO
     monitor(3), profil(2), cc(1), plot(1G)

BUGS
     Beware of quantization errors.

     Is confused by _f_7_7 which puts the entry points at the bottom
     of subroutines and functions.















































Printed 11/26/99	 April 29, 1985                         2