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dispqlen.d(1)                   USER COMMANDS                  dispqlen.d(1)




NAME

       dispqlen.d - dispatcher queue length by CPU. Uses DTrace.


SYNOPSIS

       dispqlen.d


DESCRIPTION

       The  dispatcher queue length is an indication of CPU saturation.  It is
       not an indicatior of utilisation - the CPUs may or may not be  utilised
       when the dispatcher queue reports a length of zero.

       This script measures this activity by sampling at 1000 Hertz per CPU.

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


EXAMPLES

       Print dispatcher queue length by CPU.
              # dispqlen.d



DOCUMENTATION

       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

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


AUTHOR

       Brendan Gregg [Sydney, Australia]


SEE ALSO

       uptime(1), dtrace(1M)




version 0.80                     Jun 27, 2005                   dispqlen.d(1)

Mac OS X 10.6 - Generated Thu Sep 17 20:07:28 CDT 2009
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