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pridist.d(1)                    USER COMMANDS                   pridist.d(1)




NAME

       pridist.d - process priority distribution. Uses DTrace.


SYNOPSIS

       pridist.d


DESCRIPTION

       This is a simple DTrace script that samples at 1000 Hz which process is
       on the CPUs, and what the priority is. A distribution plot is  printed.

       With  priorities, the higher the priority the better chance the process
       (actually, thread) has of being scheduled.

       This idea came from the script /usr/demo/dtrace/profpri.d,  which  pro-
       duces similar output for one particular PID.

       Since  this  uses  DTrace, only users with root privileges can run this
       command.


EXAMPLES

       This samples until Ctrl-C is hit.
              # pridist.d



FIELDS

       CMD    process name

       PID    process ID

       value  process priority

       count  number of samples of at least this priority



BASED ON

       /usr/demo/dtrace/profpri.d



DOCUMENTATION

       DTrace Guide "profile Provider" chapter (docs.sun.com)

       See the DTraceToolkit for further documentation under the  Docs  direc-
       tory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.


EXIT

       pridist.d will sample until Ctrl-C is hit.


SEE ALSO

       dispadmin(1M), dtrace(1M)




version 0.90                     Jun 13, 2005                    pridist.d(1)

Mac OS X 10.6 - Generated Thu Sep 17 20:08:56 CDT 2009
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