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cpuwalk.d(1)                    USER COMMANDS                   cpuwalk.d(1)




NAME

       cpuwalk.d - Measure which CPUs a process runs on. Uses DTrace.


SYNOPSIS

       cpuwalk.d [duration]


DESCRIPTION

       This  program  is  for  multi-CPU  servers,  and can help identify if a
       process is running on multiple CPUs concurrently or not.

       A duration may be specified in seconds.

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


EXAMPLES

       this runs until Ctrl-C is hit,
              # cpuwalk.d


       run for 5 seconds,
              # cpuwalk.d 5



FIELDS

       PID    process ID

       CMD    process name

       value  CPU id

       count  number of samples (sample at 100 hz)



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

       cpuwalk.d  will  run  until Ctrl-C is hit, or the duration specified is
       reached.


SEE ALSO

       threaded.d(1M), dtrace(1M)




version 0.90                     Sep 22, 2005                    cpuwalk.d(1)

Mac OS X 10.6 - Generated Thu Sep 17 20:07:23 CDT 2009
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