PROF(1)                                                   PROF(1)

     NAME
          prof, wm/prof - profiling limbo programs

     SYNOPSIS
          prof [ -bflnve ] [ -m modname ] ... [ -s rate ] [ cmd arg
          ...  ]

          wm/prof [ -e ] [ -m modname ] ... [ -s rate ] [ cmd arg ...
          ]

     DESCRIPTION
          Prof is a simple profiling tool which calculates the per-
          centage of time spent on a particular line of limbo source
          or spent in a particular limbo function. It can determine
          where a module or set of modules is spending its time. The
          source in question should be compiled with the -g flag so
          that the relevant symbol table files exist.

          The tk version of the profiler wm/prof shows this informa-
          tion in a text widget and colours the lines of source
          according to the amount of time spent on each line. The
          darker the colour, the longer spent.

          The -b option starts profiling.

          The -f option shows the function profile.

          The -l option shows the line profile. If neither this option
          nor the -f option are given, -l is assumed.

          The -n option lists the name of the file along with the line
          number.

          The -v option outputs all functions and/or lines even when
          the percentage of time spent in them is zero.

          The -m option lists the module names which are to be pro-
          filed. If none are given, all the modules loaded by the ker-
          nel will be profiled. The name may be the actual name of the
          module or its path name.

          The -e option profiles the module that is loaded first in
          any following command. In this case there is no need to give
          a -m option as this is added automatically.

          The -s option sets the sample interval rate and is expressed
          in ms. The default is 100 ms.

          Any remaining arguments are assumed to specify a command and
          set of arguments to the command. If this is the case, prof

     PROF(1)                                                   PROF(1)

          will automatically start profiling, run the command to com-
          pletion and then stop profiling before showing the profile
          statistics.

          Prof displays the profile statistics (unless the -b option
          is being used) according to the output format required.

     EXAMPLE
          To profile a particular command
               prof /dis/math/parts 10000
               wm/prof /dis/math/parts 10000
          To profile the same command but restrict attention to its own module (Partitions).
               prof -m Partitions /dis/math/parts 10000
               wm/prof -m Partitions /dis/math/parts 10000
          A shorter version of the above
               prof -e /dis/math/parts 10000
               wm/prof -e /dis/math/parts 10000
          To profile interactively
               prof -b -m Partitions -s 10
               /dis/math/parts 10000
               prof -f -l -n

          Note that the output format options ( -f , -l , -n , -v )
          are ignored when -b is present.

     SOURCE
          /appl/cmd/prof.b

          /appl/wm/prof.b

     SEE ALSO
          cprof(1), mprof(1), cprof(1), mprof(1), prof(2), prof(3)

     BUGS
          Prof cannot profile compiled limbo programs.