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



NAME
       rwbytype.d - read/write bytes by vnode type. Uses DTrace.

SYNOPSIS
       rwbytype.d

DESCRIPTION
       This  program  identifies  the vnode type of read/write activity - whether that is for regular files,
       sockets, character special devices, etc. This is measuring at the application level, so file activity
       may well be cached by the system.

       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.
              # rwbytype.d


FIELDS
       PID    process ID

       CMD    process name

       VNODE  vnode type (describes I/O type)

       DIR    direction, Read or Write

       BYTES  total bytes


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

AUTHOR
       Brendan Gregg [Sydney, Australia]

SEE ALSO
       rwbypid.d(1M), rwbbypid.d(1M), dtrace(1M)




version 0.70                                    Jan 11, 2006                                  rwbytype.d(1m)