SADP(1M)                                                 SADP(1M)



     NAME
          sadp - disk access profiler

     SYNOPSIS
          sadp [ -th ] [ -d device[-drive] ] s [ n ]

     DESCRIPTION
          sadp reports disk access location and seek distance, in
          tabular or histogram form.  It samples disk activity once
          every second during an interval of s seconds.  This is done
          repeatedly if n is specified.  Cylinder usage and disk
          distance are recorded in units of 8 cylinders.

          Valid values of device are dkip for integral disk and
          integral floppy.  Drive specifies the disk drives and it may
          be:

               a drive number in the range supported by device,
               two numbers separated by a minus (indicating an
               inclusive range),
          or
               a list of drive numbers separated by commas.

          Up to 8 disk drives may be reported.  The -d option may be
          omitted, if only one device is present.

          The -t flag causes the data to be reported in tabular form.
          The -h flag produces a histogram on the printer of the data.
          Default is -t.

     EXAMPLE
          The command:

               sadp -d dkip-0 900 4

          will generate 4 tabular reports, each describing cylinder
          usage and seek distance of dkip disk drive 0 during a 15-
          minute interval.

     FILES
          /dev/kmem

     SEE ALSO
          mem(7).

     ORIGIN
          AT&T V.3








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