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PROFILE(1)                  General Commands Manual                 PROFILE(1)

NAME
       profile - MINIX system profiling control command

SYNOPSIS
       Statistical profiling:

       profile start [ -m memsize ] [ -o outfile ] [ -f frequency ]
       profile stop
       sprofalyze.pl

       Call profiling:

       profile get [ -m memsize ] [ -o outfile ]
       profile reset
       cprofalyze.pl

DESCRIPTION
       This  command  controls  MINIX  system  profiling. There is support for
       statistical profiling, which  causes  a  CMOS  interrupt  to  regularly
       sample  the  position of the program counter, and call profiling, which
       uses compiler hooks to measure the time and frequency of call paths.

       For statistical profiling support, recompile the kernel  with  SPROFILE
       in <minix/config.h> set to 1. For call profiling support, recompile the
       system with new libraries with CPROFILE <minix/config.h> set to  1  and
       environment variable CPROFILE set to -Rcem-p.

OPTIONS
       start  start measuring using statistical profiling.

       stop   stop measuring using statistical profiling.

       get    retrieve call profiling data

       reset  reset call profiling data

       -m     memory buffer size used to store profiling data in, allocated by
              the profile command.

       -o outfile
              output file.

       -f frequency
              frequency for statistical sampling.

       After you have  the  output  file,  analysis  can  be  done  using  the
       sprofalyze.pl and cprofalyze.pl commands.

AUTHOR
       Rogier Meurs

                                                                    PROFILE(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | AUTHOR