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    Command:

    opcontrol

    
    
    

    SYNOPSIS

           opcontrol [ options ]
    
    
    

    DESCRIPTION

           opcontrol can be used to start profiling, end a profiling session, dump
           profile data, and set up the profiling parameters.
    
    
    

    OPTIONS

           --help Show help message.
    
           --version
                  Show version.
    
           --list-events
                  Shows the monitorable events.
    
           --init Load the OProfile module  if  required  and  make  the  OProfile
                  driver interface available.
    
           --setup
                  Followed  by  list  options  for profiling setup. Store setup in
                  ~root/.oprofile/daemonrc. Optional.
    
           --status
                  Show configuration information.
    
           --start-daemon
                  Start the oprofile daemon without starting profiling. Not avail-
                  able in 2.2/2.4 kernels.
    
           --start
                  Start  data collection with either arguments provided by --setup
                  or with information saved in ~root/.oprofile/daemonrc.
    
           --dump Force a flush of the collected profiling data to the daemon.
    
           --stop Stop data collection. Not available in 2.2/2.4 kernels.
    
           --shutdown
                  Stop data collection and kill the daemon.
    
           --reset
                  Clear out data from current session, but leaves saved  sessions.
    
           --save=sessionname
                  Save data from current session to sessionname.
    
           --deinit
                  Shut down daemon. Unload the oprofile module and oprofilefs.
    
           --session-dir=dir_path
                  Set kernel per cpu buffer to num samples (2.6 only). If you pro-
                  file  at  high rate it can help to increase this if the log file
                  show excessive count of sample lost cpu buffer overflow.
    
           --event=[event|"default"]
                  Specify an event to measure for the hardware  performance  coun-
                  ters,  or  "default"  for the default event. The event is of the
                  form "CPU_CLK_UNHALTED:30000:0:1:1" where the numeric values are
                  count,  unit  mask,  kernel-space counting, user-space counting,
                  respectively.  Note that this  over-rides  all  previous  events
                  selected;  if you want two or more counters used simultaneously,
                  you must specify them on the same opcontrol invocation.
    
           --separate=[none,lib,kernel,thread,cpu,all]
                  Separate samples based on the given separator.  'lib'  separates
                  dynamically  linked  library  samples  per application. 'kernel'
                  separates kernel and  kernel  module  samples  per  application;
                  'kernel'  implies  'library'. 'thread' gives separation for each
                  thread and task.  'cpu' separates for each  CPU.  'all'  implies
                  all of the above options and 'none' turns off separation.
    
           --callgraph=#depth
                  Enable  callgraph  sample collection with a maximum depth. Use 0
                  to disable callgraph profiling. This option is available on  x86
                  using  a 2.6+ kernel with callgraph support enabled.  It is also
                  available on PowerPC using a 2.6.17+ kernel.
    
           --image=[name,name...|"all"]
                  Only profile the given absolute paths to binaries, or  "all"  to
                  profile everything (the default).
    
           --vmlinux=file
                  vmlinux kernel image.
    
           --no-vmlinux
                  Use  this  when  you  don't  have a kernel vmlinux file, and you
                  don't want to profile the kernel.
    
           --verbose
                  Be verbose in the daemon log. This has a high overhead.
    
           --kernel-range=start,end
                  Set kernel range vma address in hexadecimal.
    
    
    

    OPTIONS (specific to Xen)

           --xen=file
                  Xen image
    
           --active-domains=<list>
                  List of domain ids participating  in  a  multi-domain  profiling
                  session.  If  more  than  one domain is specified in <list> they
    
           /var/lib/oprofile/samples/
                  The location of the generated sample files.
    
    
    

    VERSION

           This man page is current for oprofile-0.9.6.
    
    
    

    SEE ALSO

           /usr/share/doc/oprofile/, oprofile(1)
    
    
    

    4th Berkeley Distribution Thu 07 July 2011 OPCONTROL(1)

    
    
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