A data control section is useful when your SMF record might have
many relocate blocks and some of the data you are gathering is common
to all of them. For example, the channel path Monitor II control
section (subtype C) uses a control section to record the number of
times the channel was sampled. To use a data control section:
- Set the value for the FBLEN parameters on the PICTURE macro instruction
for your report, as described under Using the PICTURE macro.
- Format the data control section to hold the common data.
- Place it between the Monitor II control section and the data section.
SMF79DCS contains the offset at which it should start.
- Set SMF79DCL and SMF79DCN to the length and number of the data
control sections.
- Set the offset to the first data section SMF79ASS to point to
the end of the data control section.
When a data control section is not used:
- Set SMF79ASS to the value in SMF79DCS.
- Set SMF79DCL and SMF79DCN to 0.