Measure Reference Manual

Counter type: Queue Busy.
WRITE-QTIME
(ZMS Style only) Total time spent by write requests queued to this optical disk.
Counter type: Queue.
WRITES
Number of write operations from memory to device performed by the optical disk process. In
addition to programmatic write operations, internal operations such as writing volume labels also
modify this counter.
Counter type: Incrementing.
Legacy Style Only ID Field DDL Definitions for OPDISK Entities
These ID fields are used in Legacy Style DDL records only.
Fields are listed alphabetically.
CHANNEL
(Legacy Style only) Channel number of the device.
CTRL
(Legacy Style only) Controller number of the device.
UNIT
(Legacy Style only) Unit number of the device.
Legacy Style Only Counter Field DDL Definitions for OPDISK Entities
These counter fields are used in Legacy Style DDL records only.
Fields are listed alphabetically.
READ-BUSY-TIME
(Legacy Style only) Time spent reading from the disk. This counter measures the time from the
instruction that starts the read operation to the interrupt that ends the operation. It includes the time
spent reading data and positioning the disk heads to read the data.
Counter type: Busy.
REQUEST-QLEN-MAX
(Legacy Style only) Maximum number of items on the queue described by the REQUEST-QTIME
counter.
Counter type: Max queue.
SEEK-BUSY-TIME
(Legacy Style only) No longer used; returns zeros. All seek operations are implicit in read and
write operations.
SEEKS
(Legacy Style only) No longer used; returns zeros. All seek operations are implicit in read and
write operations.
OPDISK 269