50 CMF MONITOR CMFMON User Guide
DEVICE
DEVICE
[CLASS=TAPE|COMM|DASD|GRAPH|UNITR|CHRDR|CTC]
[,RANGE=(dev1,dev2,...deva:devb)]
[,SG=(sg1,sg2,...sga:sgb)]
[,VOLUME=(vol1,vol2,...vola:volb)]
Overview
Collects data on specified devices. If no operands are specified, data is collected for all online
devices. Data is recorded in SMF79 subtype 9 records.
Note: Device data is available only when the CMF Extractor is active with the DEVICE
statement in CPM mode. CMFMON collects data only for devices that the CMF
Extractor is monitoring. When data is returned, it reflects activity that occurred during
the current CMF recording interval.
Parameters
CLASS Limits the data collected to devices of the specified type. The default is to
collect data for all devices. Possible values are:
TAPE Magnetic tape devices
COMM Communications devices
DASD Direct access storage devices
GRAPH Graphics devices
UNITR Unit record devices
CHRDR Character reader devices
CTC Channel-to-channel adapters
RANGE Up to 32 devices or ranges of devices for which data is collected. The
default is to collect data for all devices.
SG Up to 16 storage groups or ranges of storage groups for which data is
collected. The default is to collect data for all storage groups.
VOLUME Limits the data collected to devices on which the specified volume(s) is
mounted. Up to 32 volumes or ranges of volumes may be specified. The
default is to collect data for all volumes.
Example 1
DEVICE CLASS=DASD,SG=SGROUP01
Data is collected on the DASD devices in storage group SGROUP01.
