Structure (Interim Storage) Section

This section contains information related to the interim storage for a log stream. For a coupling facility log stream, interim storage is coupling facility structure space allocated to the log stream. For a dasd only log stream, interim storage is staging data set space.

Also refer to the SMF88SSD DSECT Section in macro IXGSMF88 in SYS1.MACLIB.

Triplet Information

This section is located on the record using the following triplet fields, which are located in the ‘Header/self-defining’ section:
Offset
SMF88SOF
Length
SMF88SLN
Number
SMF88SON
Offsets Name Length Format Description
0 0 SMF88STN 16 EBCDIC Name of the structure used for this log stream. For a dasd only log stream, this field will show *DASDONLY*.
16 10 SMF88SWB 8 EBCDIC Current written bytes count. Count of bytes written to interim storage during this interval (FORMAT= LONG FLOATING POINT).
24 18 SMF88SIB 8 EBCDIC Current instead bytes count. Count of bytes deleted from interim storage during this interval, instead of being offloaded (FORMAT=LONG FLOATING POINT). This field is incremented due to either a user invocation of IXGDELET where the data had not been offloaded or system logger internal management of interim storage.
32 20 SMF88SAB 8 EBCDIC Current after bytes count. Count of bytes deleted from interim storage during this interval, after being offloaded (FORMAT=LONG FLOATING POINT). This field is incremented by system logger's internal management of interim storage.
40 28   4 EBCDIC Reserved.
44 2C SMF88SII 4 binary Current instead invocation count. Count of times a deletion from interim storage for this log stream was performed during this interval, where the data was not first offloaded.
48 30 SMF88SAI 4 binary Current after invocation count. Count of times a deletion from interim storage was performed during this interval, after being offloaded (occurs due to system logger management of interim storage).
52 34 SMF88SC1 4 binary The count of type-1 completions during the expired SMF interval. The Logstream contents can remain in the primary storage. No need to move data from primary storage to DASD. This field is valid for both coupling facility and DASDONLY Logstreams.
56 38 SMF88SC2 4 binary The count of type-2 completions during the expired SMF interval. Logstream is filling the primary storage but space is not critical. System Logger begins asynchronous offloading of Logstream data from the primary storage to DASD. This field is valid for both coupling facility and DASDONLY Logstreams.
60 3C SMF88SC3 4 binary The count of type-3 completions during the expired SMF interval. Space used in the structure (by this Logstream) is critical but does not exceed 100 percent. This field is only valid for coupling facility based Logstreams.
64 40   4   Reserved