z/OS V1R8 DFSMS Technical Update - IBM Redbooks

In Figure 3-25 we show part of the IGWSMF macro that relates to group SMF42G1A records.
SMF42G1A DS 0CL1488 DATA SET/MVS SYSTEM SUMMARY @21A
* SECTION @21C
SMF42GBA DS 1FL4 INTERVAL LENGTH. THIS IS THE
* TOTAL TIME OF THE MEASUREMENT
* PERIOD. (IN SECONDS) @10A
SMF42A05 DS CL12 RESERVED @10A
*
SMF42GBB DS CL44 DATA SET NAME @10A
SMF42A06 DS 1FL4 RESERVED @10A
*
SMF42GBC DS CL44 VSAM SPHERE NAME @10A
SMF42A07 DS 1FL4 RESERVED @10A
*
SMF42GBD DS 1FL2 LENGTH OF THE STORAGE CLASS
* NAME @10A
SMF42GBE DS CL30 STORAGE CLASS NAME @10A
*
SMF42A08 DS 1FL2 CACHESETNAME LENGTH @10A
SMF42GBF DS CL30 CACHESET NAME @10A
*
SMF42A12 DS 1FL2 RESERVED @10A
SMF42GBG DS CL30 DFP CACHE STRUCTURE NAME @10A
*
SMF42GBH DS CL8 MVS SYSTEM NAME @10A
SMF42A11 DS CL8 RESERVED @10A
*
SMF42GBI DS 1FL4 INDICATOR OF COMPONENT BEING
* PROCESSED @10A
SMF42GBI0 EQU X'80000000' DATA COMPONENT @10A
SMF42GBI1 EQU X'40000000' INDEX COMPONENT @10A
SMF42A09 DS CL12 INDICATES DFSMS GREATER @P5A
* THAN 4K CF CACHING STATUS @P5A
* VALUES ARE ALL, NONE, @P5A
* UPDATESONLY, GT4KNOTACT @P5A
SMF42GBK DS 1FL4 NUMBER OF LOCK REQUESTS
* PROCESSED @10A
SMF42GBL DS 1FL4 NUMBER OF TRUE CONTENTION
* LOCK REQUESTS @10A
SMF42GBM DS 1FL4 NUMBER OF FALSE CONTENTION
* LOCK REQUESTS @10A
SMF42GZ8 DS 1FL2 SMSDIRECTWEIGHT @10A
SMF42GZ9 DS 1FL2 SMSSEQUENTIALWEIGHT @10A
*
.
Figure 3-25 IGWSMF record extract for group SMF42G1A
In Figure 3-25:
► Fields SMF42GBA, SMF42GBB, and SMF42GBC show, respectively, the interval time,
data set name, and VSAM sphere name.
The SMF42GBA value can be used as an indicator that the record is valid. A value of 0 or
a very high number is likely to indicate that the SMF record may be suspect.
► Fields SMF42GBE, SMF42GBF, SMF42GBH, SMF42GBI, and SMF42A09 show,
respectively, the Storage Class Name, the CACHESET name, the DFP CACHE
Chapter 3. DFSMSdfp V1R8 enhancements 35