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rwbypid.d(1)                    USER COMMANDS                   rwbypid.d(1)




NAME

       rwbypid.d - read/write calls by PID. Uses DTrace.


SYNOPSIS

       rwbypid.d


DESCRIPTION

       This  script tracks the number of reads and writes at the syscall level
       by processes, printing the totals in a report. This matches  reads  and
       writes whether they succeed or not.

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


EXAMPLES

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



FIELDS

       PID    process ID

       CMD    process name

       DIR    direction, Read or Write

       COUNT  total calls



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

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


AUTHOR

       Brendan Gregg [Sydney, Australia]


SEE ALSO

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




version 1.00                     Jun 28, 2005                    rwbypid.d(1)

Mac OS X 10.6 - Generated Thu Sep 17 20:09:04 CDT 2009
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