NAME
sadp — disk access profiler
SYNOPSIS
/usr/sbin/sadp
[-th]
[-d
device[-drive]]
interval
[count]
DESCRIPTION
sadp
reports disk access location and seek distance,
in tabular or histogram form, or both.
It samples disk activity once every second during an interval of
interval
seconds.
This is done
count
times if
count
is specified.
Cylinder usage and disk distance are recorded in units of 8 cylinders.
Options
sadp
recognizes the following options and command-line arguments:
- -t
(default) Report data in tabular form.
- -h
Produce a histogram of the data.
- -d device
Profile a specified device.
The following are valid values for
device
are:
- disc1
HP-IB
disks (CS/80).
- disc2
Fiber Link
(FL)
disk.
- disc3
Small Computer Systems Interface
(SCSI)
disk.
- sdisk
SCSI
disks.
sadp
can profile only one device type per invocation.
The
-d
option can be omitted if the system has only one device type.
- -drive
Specify the disk drive.
drive
can be one of the following:
The instance number of the interface card to which
device
is configured, as reported by the
ioscan
command
(see
ioscan(1M)).
Two
instance
numbers separated by a minus (indicating an inclusive range).
A list of
instance
numbers separated by commas.
If
-drive
is specified, it must follow
device
without a space (see EXAMPLES).
If
-drive
is not specified,
sadp
profiles all the disk drives configured for
device.
The
instance
number can be in the range 0 to 255 for
disc1,
disc2,
disc3,
and
sdisk
device drivers.
EXAMPLES
Generate four tabular reports,
each describing cylinder usage and seek distance of
disc1,
the device driver for disk drive at instance 0, during a
fifteen-minute interval:
STANDARDS CONFORMANCE
sadp: SVID2
Printable version
