sadp(1)
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sadp Command
disk access profiler
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SYNTAX
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 hdsk for integral disk and fdsk for
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 hdsk-0 900 4
will generate 4 tabular reports, each describing cylinder usage
and seek distance of hdsk disk drive 0 during a 15-minute
interval.
FILES
/dev/kmem
DG/UX 4.00 Page 1
Licensed material--property of copyright holder(s)
sadp(1)
SEE ALSO
mem(7).
DG/UX 4.00 Page 2
Licensed material--property of copyright holder(s)