diskhits(1m) Mac OS X Manual Page

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diskhits(1m)                                    USER COMMANDS                                   diskhits(1m)



NAME
       diskhits - disk access by file offset. Uses DTrace.

SYNOPSIS
       diskhits pathname

DESCRIPTION
       This  prints  how  a  file was accessed, the locations on a distribution plot.  This is for the cache
       misses only - the file activity that resulted in disk events.

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

EXAMPLES
       Sample /var/adm/messages disk activity,
              # diskhits /var/adm/messages


FIELDS
       Location (KB)
              the file offset of the disk activity, Kbytes

       Size (KB)
              size of the disk activity, Kbytes

       Total RW
              Total disk activity, reads + writes


BASED ON
       /usr/demo/dtrace/applicat.d


DOCUMENTATION
       DTrace Guide "io Provider" chapter (docs.sun.com)

       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
       diskhits will sample until Ctrl-C is hit.

SEE ALSO
       dtrace(1M)



version 0.72                                    Apr 20, 2006                                    diskhits(1m)

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