Measure Reference Manual

INPUT-DATA-BYTES
Number of data bytes read from the communications line. This counter includes only user data.
Data required by line protocol is ignored.
All INPUT-DATA-BYTES events are recorded on the write unit of the line. The INPUT-DATA-BYTES
count is always less than the INPUT-BYTES count.
For SNAX lines, this counter includes only request/response header (RH) and RU data counts
(3 + RU bytes) of RUs destined for an OPEN logical unit or a logical unit in a pass-through session.
In G-series and earlier RVUs, this is a 32-bit counter. In H-series and J-series RVUs, this is a 64-bit
counter.
In G-series RVUs, the INPUT-DATA-BYTES-F field is a 64-bit version of INPUT-DATA-BYTES.
Counter type: Accumulating.
OUTPUT-BYTES
Number of bytes written to the communications line.
For SNAXLINK lines, OUTPUT-BYTES is the total number of bytes sent on the SNAXLINK write unit.
OUTPUT-BYTES includes overhead for the request/response header (RH), request/response unit
(RU), transmission header (TH), and HDLC frame (3 + RU + 6 + approximately 6 bytes, assuming
only one PIU is being sent in the frame).
PIUs can be sent to the SNAXLINK unit in blocked format. Therefore, the overhead cannot be
calculated exactly.
For all other lines, OUTPUT-BYTES is the total number of bytes sent on the write unit. OUTPUT-BYTES
includes the RH + RU + TH + SDLC frame overhead (3 + RU + 6 + 6 bytes).
In G-series and earlier RVUs, this is a 32-bit counter. In H-series and J-series RVUs, this is a 64-bit
counter.
In G-series RVUs, the OUTPUT-BYTES-F field is a 64-bit version of OUTPUT-BYTES.
Counter type: Accumulating.
OUTPUT-DATA-BYTES
Number of data bytes written to the communications line. This counter includes only user data.
Data required by line protocol is ignored.
The OUTPUT-DATA-BYTES count is always less than the OUTPUT-BYTES count.
For SNAX lines, this counter includes only the request/response header (RH) and RU data counts
(3 + RU bytes) of RUs being sent on the line.
In G-series and earlier RVUs, this is a 32-bit counter. In H-series and J-series RVUs, this is a 64-bit
counter.
In G-series RVUs, the OUTPUT-DATA-BYTES-F field is a 64-bit version of OUTPUT-DATA-BYTES.
Counter type: Accumulating.
READ-BUSY-TIME
The time spent reading from the communications line. This counter measures the time from the
instruction that starts the read to the interrupt that signals the end of the I/O operation. Any process
can run during this time.
For SNAX and AM6520 lines, this counter is always close to 100 percent busy because polling
protocols constantly have a read outstanding.
Counter type: Busy.
252 Entities and Counters