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oprofile



SYNOPSIS

       opcontrol [ options ]
       opreport [ options ] [ profile specification ]
       opannotate [ options ] [ profile specification ]
       opgprof [ options ] [ profile specification ]


DESCRIPTION

       OProfile  is  a profiling system for systems running Linux
       2.2, 2.4, and 2.5. Profiling  runs  transparently  in  the
       background  and profile data can be collected at any time.
       OProfile makes use of the  hardware  performance  counters
       provided  on  Intel, AMD, and other processors, and uses a
       timer-interrupt based mechanism on CPUs without  counters.
       OProfile can profile the whole system in high detail.


OPCONTROL

       opcontrol  is  used for starting and stopping the OProfile
       daemon, and providing set-up parameters.


OPREPORT

       opreport gives image and  symbol-based  profile  summaries
       for the whole system or a subset of binary images.


OPANNOTATE

       opannotate  can  produce  annotated source or mixed source
       and assembly output.


OPGPROF

       opgprof can produce a gprof-format profile  for  a  single
       binary.


PROFILE SPECIFICATIONS

       All  of the post-profiling tools can take profile specifi­
       cations, which is some combination of the following param­
       eters.

       session:sessionlist
              A  comma-separated list of session names to resolve
              in. Absence of this tag, unlike all  others,  means
              "the  current  session",  equivalent  to specifying
              "session:current".

       session-exclude:sessionlist
              A comma-separated list of sessions to exclude.

       image:imagelist
              A comma-separated list of image names  to  resolve.
              Each  entry  may be relative path, glob-style name,
              or full path, e.g.  opreport  'image:/usr/bin/opro­
              filed,*op*,./oprofpp'
              ing images are excluded.

       event:eventname
              The   symbolic   event   name  to  match  on,  e.g.
              event:DATA_MEM_REFS.

       count:eventcount
              The    event    count    to    match    on,    e.g.
              event:DATA_MEM_REFS count:30000.

       unit-mask:maskvalue
              The  unit mask value of the event to match on, e.g.
              unit-mask:1.

       binary:file
              Give results only for the given file. This can only
              be used with sample-file:.

       sample-file:samplefile
              Give  results  only for the given sample file. This
              can only be used with binary:.


ENVIRONMENT

       No special environment variables are recognised  by  opro­
       file.


FILES

       $HOME/.oprofile/
              Configuration files

       /home/root/.oprofile/daemonrc
              Configuration file for opcontrol

       $prefix/share/oprofile/
              Event description files used by OProfile.

       /var/lib/oprofile/oprofiled.log
              The user-space daemon logfile.

       /var/lib/oprofile/opdev,   /var/lib/oprofile/ophashmapdev,
       /var/lib/oprofile/opnotedev
              The  device  files for communication with the Linux
              2.4 kernel module.

       /dev/oprofile
              The device filesystem for  communication  with  the
              Linux 2.5 kernel module.

       /var/lib/oprofile/samples/
       oprofile  is  Copyright (C) 1998-2003 University of Manch­
       ester, UK, John Levon, and others.  OProfile  is  released
       under  the  GNU  General Public License, Version 2, or (at
       your option) any later version.


AUTHORS

       John  Levon  <levon@movementarian.org>  is   the   primary
       author. See the documentation for other contributors.

oprofile 0.6          Wed 24 September 2003           OPROFILE(1)

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