Measure Reference Manual

Accumulating Counters
Accumulating counters count the number of bytes passing to or from a file, disk, or other entity. A
value is added to the counter whenever data is transferred to or from the entity.
Units Displayed As...Output Value Is...Attribute Setting
per-second values: /s, K/s, M/s, G/s,
or T/s
1
Number of bytes transferred for each
second during the time interval.
REPORT RATE is ON
#, K, M, G, or TNumber of bytes transferred during
the time interval.
REPORT RATE is OFF
Number of bytes transferred during
the time interval.
REPORT FORMAT is STRUCTURED
1
ZMS style only. No units are displayed in the legacy format. It is assumed to be /s with no scaling, and might overflow.
Measure supports both 32-bit and 64-bit accumulating counters. In G-series RVUs, some
accumulating counters exist in two versions, a 32-bit version and a 64-bit version. The 64-bit version
is distinguished by a counter name ending in the characters -F. For example, SENT-BYTES is a
32-bit counter; SENT-BYTES-F is the corresponding 64-bit counter. In H-series and J-series RVUs,
all such accumulating counters have 64 bits, and no counter in ZMS style records has a name
ending in -F. For example, in H-series and J-series RVUs SENT-BYTES is a 64-bit counter.
SENT-BYTES-F is no longer a counter name in ZMS style but remains available to applications
requesting data in legacy style.
For an example of an accumulating counter, see the FILE entity counter MESSAGE-BYTES (page 240).
Average Queue Time Counters (ZMS Style Only)
Average queue time counters measure the average time that each item visiting a queue spends
there. This derived counter is formed by dividing a queue counter by a corresponding incrementing
counter for items visiting the queue.
The implementation of the queue counter determines whether the average queue time counter
includes the average service time to process the event or whether it is exclusively queueing time,
as indicated by the counter’s suffix:
Includes Service TimeSuffix
No-AQT
Yes-ART
Average queue time counters are not affected by setting RATE ON or OFF. Units are displayed as
ms, sec, hr, day, or wk.
For an example of an average queue time counter, see REQUEST-ART in the ZMS style report in
DISC (page 189).
Average Service Time Counters (ZMS Style Only)
Average service time counters measure the average time to satisfy each request of a resource. This
derived counter is formed by dividing a busy or queue-busy counter for a resource by a
corresponding incrementing counter for requests of the resource. Average service time counters
are identified in displays by the suffix -AST.
Average service time counters are not affected by setting RATE ON or OFF. Units are displayed
as ms, sec, hr, day, or wk.
For an example of an average service time counter, see DEVICE-AST in the ZMS style report in
DISC (page 189) .
138 Entities and Counters