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syscallbyproc.d(1m)                             USER COMMANDS                            syscallbyproc.d(1m)



NAME
       syscallbyproc.d - syscalls by process name. Uses DTrace.

SYNOPSIS
       syscallbyproc.d

DESCRIPTION
       syscallbyproc.d  is a DTrace OneLiner to a report of the number of system calls made by process name.

       This is useful to identify which process is causing the most system calls.

       Docs/oneliners.txt and Docs/Examples/oneliners_examples.txt in the DTraceToolkit contain  this  as  a
       oneliner that can be cut-n-paste to run.

       Since  this  uses  DTrace,  only the root user or users with the dtrace_kernel privilege can run this
       command.

EXAMPLES
       This samples until Ctrl-C is hit.
              # syscallbyproc.d


FIELDS
       first field
              This is the process name. There may be several PIDs that have the same process name, for exam-ple example
              ple with numerous instances of "bash". The value reported will be the sum of them all.

       second field
              This is the count, the number of system calls made.


DOCUMENTATION
       See  the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may
       include full worked examples with verbose descriptions explaining the output.

EXIT
       syscallbyproc.d will sample until Ctrl-C is hit.

AUTHOR
       Brendan Gregg [Sydney, Australia]

SEE ALSO
       procsystime(1M), dtrace(1M), truss(1)




version 1.00                                    May 15, 2005                             syscallbyproc.d(1m)