Measure Reference Manual

DEVICE
The DEVICE entity provides information about devices such as tape drives or printers. In G-series
and later RVUs, the DEVICE entity applies only to tape drives.
NOTE: Some devices are identified by specific entity types: DISC for disks, LINE and NETLINE
for communication lines, and TERMINAL for subdevices and asynchronous terminals.
PageTopic
179Entity specification syntax for DEVICE entities
180DDL records for DEVICE entities
183DDL field definitions for DEVICE entities
187Usage notes for DEVICE entities
188Examples of DEVICE measurements
Entity Specification Syntax for DEVICE Entities
To describe DEVICE entities:
DEVICE entity-spec [, entity-spec ] ...
DEVICE
collects information about one or more devices on the local system.
entity-spec
is specified as:
{ * }
{ $device [ ( cpu [, svnet [, group [, module [, slot
[, scsi-id ] ] ] ] ] ) ] }
or for CLIM-attached devices only, specified as:
{ $device [ ( cpu [, svnet [, sac [, lun ] ] ] ) ] }
or for listing D-series data only, specified as:
{ * }
{ $device [ ( cpu [ , chan [ , ctrl [ , unit ] ] ] ) ] }
where:
*
indicates all devices in all CPUs.
$device
is the name of the device to measure. To indicate all devices, use an asterisk (*).
cpu
is the number of the CPU in which the device to be measured is configured. To indicate all
CPUs, use an asterisk (*). The default is all CPUs.
svnet
(G-series and later RVUs) is the ServerNet fabric used by this device. The Measure subsystem
measures all device records relative to the specified fabric. The value is 0 for X fabric, 1
for Y fabric. The default is to measure records for both fabrics.
Devices connected by a ServerNet/DA do not have an X or Y fabric. To indicate these
disks, use an asterisk (*). In this case, you can use an asterisk (*) in the LISTACTIVE
command as long as the rest of the entity specification describes one device.
DEVICE 179