IBM SC33-1683-02 - Manual (Page 696)

The label ‘MNSMFDS’ is the default DSECT name, and SMF is the default PREFIX
value, so you could also generate the DSECT simply by coding:
DFHMNSMF
The MNSMFDS DSECT has the format shown in Figure 85.
* START OF THE SMF HEADER
*
MNSMFDS DSECT
SMFMNLEN DS XL2 RECORD LENGTH
SMFMNSEG DS XL2 SEGMENT DESCRIPTOR
SMFMNFLG DS X OPERATING SYSTEM INDICATOR (see note 1)
SMFMNRTY DC X'6E' RECORD 110 FOR CICS
SMFMNTME DS XL4 TIME RECORD MOVED TO SMF
SMFMNDTE DS XL4 DATE RECORD MOVED TO SMF
SMFMNSID DS CL4 SYSTEM IDENTIFICATION
SMFMNSSI DS CL4 SUBSYSTEM IDENTIFICATION
SMFMNSTY DS XL2 RECORD SUBTYPE - MONITORING USES TYPE 1
SMFMNTRN DS XL2 NUMBER OF TRIPLETS
DS XL2 RESERVED
SMFMNAPS DS XL4 OFFSET TO PRODUCT SECTION
SMFMNLPS DS XL2 LENGTH OF PRODUCT SECTION
SMFMNNPS DS XL2 NUMBER OF PRODUCT SECTIONS
SMFMNASS DS XL4 OFFSET TO DATA SECTION
SMFMNASL DS XL2 LENGTH OF DATA SECTION
SMFMNASN DS XL2 NUMBER OF DATA SECTIONS
*
* THIS CONCLUDES THE SMF HEADER
*
Figure 85. Format of the SMF header and product section for monitoring records (Part 1 of 2)
monitoring record formats
664 CICS TS for OS/390: CICS Customization Guide