FTOC(1-SysV)        RISC/os Reference Manual         FTOC(1-SysV)



NAME
     ftoc - interface between prof and cord

SYNOPSIS
     ftoc file1 ...

DESCRIPTION
     ftoc reads one or more feedback files produced by the -feed-
     back option of the profiler prof(1) and writes onto stdout a
     reorder-file for use with the cache-rearranging program
     cord(1).  It interprets each feedback file as representing
     one phase of a program's execution. In other words, if a
     program behaves in two distinct ways depending on its input,
     you could create two different feedback files by executing
     the program twice with different input data, and both ftoc
     and cord will understand that the information from the first
     file is distinct from that of the second file.

     As an example, to improve the instruction-cache performance
     of a program called hello, you could generate a new
     hello.cord program by saying:

       cc -o hello hello.c
       pixie -o hello.pixie hello
       hello
       prof -pixie -feedback hello.feedback hello
       ftoc hello.feedback > hello.reorder
       cord -o hello.cord hello hello.reorder

     The reorderfile consists of a list of lines of the form:

       sourcefile procname.procname... n

     where "procname.procname..." represents an outer-to-inner
     list of nested procedures, and n is 10 times the percentage
     of the procedure's "density" with respect to the total of
     the densities of all procedures. ("Density" is the ratio of
     a procedure's total cycles to its total static instruc-
     tions.) A line consisting of "$phase" separates information
     from different feedback files.

SEE ALSO
     cord(1), prof(1).












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