Measure Reference Manual

Counter type: Queue Busy.
INPUT-BYTES
Number of bytes read from the optical disk. In addition to programmatic read operations, internal
operations such as reading file labels also modify this counter.
Because the optical disk process modifies this counter before the I/O operation, this counter might
not be accurate if the read fails.
Counter type: Accumulating.
OUTPUT-BYTES
Number of bytes written to the optical disk. In addition to programmatic write operations, internal
operations such as writing volume labels also modify this counter.
Because the optical disk process modifies this counter before the I/O operation, the counter might
not be accurate if the write fails.
Counter type: Accumulating.
READ-QBUSY-TIME
(ZMS Style only) Time spent in a state in which read requests of any number were queued to the
optical disk in this processor.
Counter type: Queue Busy.
READ-QTIME
(ZMS Style only) Total time spent by read requests queued to the optical disk.
Counter type: Queue.
READS
Number of read operations from device to memory performed by the optical disk process. In
addition to programmatic read operations, internal operations such as reading file labels also
modify this counter.
Counter type: Incrementing.
REQUEST-QTIME
Time that requests spent on the optical disk process internal queue (includes any currently active
requests).
When reading a request, the optical disk process places it on the internal queue. After processing
the request, the optical disk process removes the request from the internal queue. To determine the
length of the optical disk process external queue (requests waiting to be read by the optical disk
process), measure the optical disk process and examine the RECV-QTIME counter of the PROCESS
entity.
Counter type: Queue.
REQUESTS
Number of requests received by the optical disk process.
To determine how long the requests were queued before being read by the optical disk process,
measure the optical disk process and examine the RECV-QTIME counter of the PROCESS entity.
Counter type: Incrementing.
WRITE-QBUSY-TIME
(ZMS Style only) Time spent in a state in which write requests of any number were queued to this
optical disk in this processor
268 Entities and Counters