MPROF(1)                                                 MPROF(1)

     NAME
          mprof, wm/mprof - memory profiling limbo programs

     SYNOPSIS
          mprof [ -bcMflnve123 ] [ -m modname ] ... [ cmd arg ...  ]

          wm/mprof [ -e12 ] [ -m modname ] ... [ cmd arg ...  ]

     DESCRIPTION
          Mprof is a simple memory profiling tool which calculates the
          amount of main, heap and image memory used on a particular
          line of limbo source or in a particular limbo function or
          module. The main memory in question covers the space taken
          by dis code, jit code, runtime stacks and dynamic C module
          text, data and relocation areas. The heap memory covers all
          other limbo data structures. The source in question should
          be compiled with the -g flag so that the relevant symbol
          table files exist. In its simplest form, the memory profiler
          shows a line number, the current memory in bytes allocated
          when executing this line, the high water memory in bytes
          allocated when executing this line and the limbo source.
          This information is also available at the function and mod-
          ule level.

          The tk version of the profiler wm/mprof shows this informa-
          tion in a text widget and colours the lines of source
          according to the amount of memory allocated by the line. The
          darker the colour, the more memory used.

          The -b option starts profiling.

          The -c option clears all profiling statistics and state in
          the memory profiling device. If any commands are specified
          to mprof , this is done automatically. It's specific use is
          to end the accumulation of statistics when profiling inter-
          actively. See the example below.

          The -M option shows the memory statistics for each module
          The -f option shows the memory statistics for each function.

          The -l option shows the memory statistics for each line. If
          neither this option nor the -M and -f options are given, -M
          and -l are 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
          they do not involve memory allocating or freeing operations.

     MPROF(1)                                                 MPROF(1)

          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 -1 option profiles only main memory (pool number 1 in
          the kernel). The default is to profile main, heap and image
          memory.

          The -2 option profiles only heap memory (pool number 2 in
          the kernel). The default is to profile main, heap and image
          memory.

          The -3 option profiles only image memory (pool number 3 in
          the kernel). The default is to profile main, heap and image
          memory.

          Any remaining arguments are assumed to specify a command and
          set of arguments to the command. If this is the case, mprof
          will automatically start profiling, run the command to com-
          pletion and then stop profiling before showing the profile
          statistics.

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

     EXAMPLE
          To profile a particular command
               mprof /dis/math/parts 10000
               wm/mprof /dis/math/parts 10000
          To profile the same command but restrict attention to its own module (Partitions).
               mprof -m Partitions /dis/math/parts 10000
               wm/mprof -m Partitions /dis/math/parts 10000
          A shorter version of the above
               mprof -e /dis/math/parts 10000
               wm/mprof -e /dis/math/parts 10000
          To profile interactively
               mprof -b -m Polyhedra
               wm/polyhedra &
               mprof -M -f -l -n
               <interact with wm/polyhedra ...>
               mprof -M -f -l -n
               wm/mprof
               mprof -c

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

     MPROF(1)                                                 MPROF(1)

     SOURCE
          /appl/cmd/mprof.b

          /appl/wm/mprof.b

     BUGS
          Can take quite a time to present statistics when profiling
          all modules in the system.

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