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ftoc(1)
NAME
  ftoc - interface between prof and cord

SYNOPSIS
  ftoc file1...

DESCRIPTION
  The ftoc interface reads one or more feedback files produced by the
  -feedback 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.pixie
       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 instructions.)
  A line consisting of "$phase" separates information from different feedback
  files.

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

Index for Section 1

Alphabetical listing for F

Top of page