It produces a source listing of the program modules given as arguments where execution counts have been inserted as comments. For instance, ocamlprof foo.ml prints the source code for the foo module, with comments indicating how many times the functions in this module have been called. Naturally, this information is accurate only if the source file has not been modified since the profiling execution took place.

-f dumpfile

Specifies an alternate dump file of profiling information. The default is the file ocamlprof.dump in the current directory.

-F string

Specifies an additional string to be output with profiling information. By default, ocamlprof will annotate programs with comments of the form (* n *) where n is the counter value for a profiling point. With option -F string the annotation will be (* s n *)