Measure Reference Manual

Usage Note for G-Series CLUSTER Entities
The 64-bit byte-count fields (fields ending in -F) collect the same data as older 32-bit byte-count
fields. For example, the 64-bit field SENT-BYTES-F collects the same data as the 32-bit field
SENT-BYTES. The 64-bit fields are less subject to overflow caused by high levels of I/O activity.
The 32-bit fields are still active and continue to return values. If no field overflow occurs, the 32-bit
fields and the 64-bit fields return the same value. If a 32-bit field overflows, the corresponding
64-bit field returns the correct value, and the 32-bit field returns a value of -1. The ERROR field for
the measured entity also returns -1 to indicate an overflow condition.
Convert your applications to use the 64-bit fields; 32-bit fields might be deactivated in a future
PVU.
In MEASCOM commands and in command (OBEY) files, use the names of the 32-bit fields. For
example, issue the command LIST DEVICE BY SENT-BYTES, not LIST DEVICE BY SENT-BYTES-F.
MEASCOM uses the names of the 32-bit fields in output displays such as reports and plots.
CONTROLLER
The CONTROLLER entity measures I/O activity on controllers for disks, tape, terminals, and other
devices on systems running D-series RVUs. In Measure D45 and later PVUs, the default is to have
the CONTROLLER entity disabled. For more information on this default setting, see Usage Notes
for CONTROLLER Entities (page 160).
To enable the CONTROLLER entity, before starting the Measure subsystem:
ADD DEFINE =_MEASURE_CONTROLLERS, FILE A
To measure ServerNet addressable controllers (SACs) on systems running G-series RVUs, see
SERVERNET (page 323).
NOTE: You can measure ServerNet addressable controllers with a D-series measurement
application if it specifies all controllers (ADD CONTROLLER *) or only a CPU number (ADD
CONTROLLER 2). To measure specific SACs, you must modify the entity identifiers.
NOTE: There is no ZMS Style DDL record for CONTROLLER entities.
PageTopic
158Entity specification syntax for CONTROLLER entities
159DDL record for CONTROLLER entities
159DDL field definitions for CONTROLLER entities
160Usage notes for CONTROLLER entities
Entity Specification Syntax for CONTROLLER Entities
To describe CONTROLLER entities:
CONTROLLER entity-spec [, entity-spec ] ...
CONTROLLER
collects information about one or more controllers on the system.
entity-spec
is specified as:
{ * [ ( type ) ] }
{ cpu [ , channel [ , ctrl ] ] [ ( type ) ] }
where:
158 Entities and Counters