Appendix B. Getting Data You Want 95
Appendix B. Getting Data You Want
Most of the data for both CMFMON’s online and write facilities is provided by CMF Type 79
API, which collects its data from MVS system control blocks. However, a few of the 79
subtypes require additional support before they can be displayed online or written to a data set.
This appendix describes these requirements. (For more information about CMF Type 79 API,
see “CMF Type 79 API” on page 99.)
CMF Extractor Requirements
Some 79 record subtypes require an active Extractor sampler to provide the data. If you are
planning to display any of the screens or code any of the control statements shown in the first
column of the following table, make sure the corresponding sampler is active in CPM mode:
Data returned by these subtypes reflects activity that occurred during the current CMF
recording interval. These fields are reset at the beginning of each interval.
BBXS Requirements
When certain fields in subtype 2 and 3 are requested, the BBX subsystem (BBXS) must also be
active. In addition, record subtype 12 requires channel measurement, which typically is
provided by BBXS.
Note: BBXS is automatically activated by the CMF Extractor.
Screen/Statement Data Description CMF Sampler Subtype
TRX Transaction activity WORKLOAD 79-8
DEV/DEVICE Device activity DEVICE 79-9
PGSPP
PGSPS
Paging activity ASMDATA 79-11
IOQUEUE/IOQ I/O queuing activity for
438x and 308x
processors
IOQ 79-13
IOQUEUE/IOQ I/O queuing activity for
ES/9000 and 3090
processors
IOQ 79-14
