iofileb.d man page on Darwin

iofileb.d man page on Darwin

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

NAME
       iofileb.d - I/O bytes by file and process. Uses DTrace.

SYNOPSIS
       iofileb.d

DESCRIPTION
       This prints a summary of requested disk activity by pathname, providing
       totals of the I/O events in bytes. It is a companion  to	 the  iofile.d
       script  -  which prints in terms of I/O wait time, not bytes.  I/O wait
       time is a better metric for  understanding  performance	issues.	  Both
       disk and NFS I/O are measured.

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

EXAMPLES
       Sample until Ctrl-C is hit then print report,
	      # iofileb.d

FIELDS
       PID    process ID

       CMD    process name

       KB     kilobytes of disk I/O

       FILE   file pathname

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

SEE ALSO
       iofile.d(1M), iosnoop(1M), dtrace(1M)

version 1.00			 Feb 20, 2006			 iofileb.d(1m)

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