Descriptions of the performance data fields in the DFHSTOR group, including the numeric identifer, type, and size of each field.
User storage fields in group DFHSTOR
- 033 (TYPE-A, 'SCUSRHWM', 4 BYTES)
- Maximum amount (high-water mark) of user storage allocated to the user task below the 16 MB line, in the user dynamic storage area (UDSA).
- 054 (TYPE-A, 'SCUGETCT', 4 BYTES)
- Number of user-storage GETMAIN requests issued by the user task for storage below the 16 MB line, in the UDSA.
- 095 (TYPE-A, 'SCUSRSTG', 8 BYTES)
- Storage occupancy of the user task below the 16 MB line, in the UDSA. This measures the area under the curve of storage in use against elapsed time. For more information about storage occupancy, see Storage occupancy counts.
- 105 (TYPE-A, 'SCUGETCT', 4 BYTES)
- Number of user-storage GETMAIN requests issued by the user task for storage above the 16 MB line, in the extended user dynamic storage area (EUDSA).
- 106 (TYPE-A, 'SCUSRHWM', 4 BYTES)
- Maximum amount (high-water mark) of user storage allocated to the user task above the 16 MB line, in the EUDSA.
- 107 (TYPE-A, 'SCUSRSTG', 8 BYTES)
- Storage occupancy of the user task above the 16 MB line, in the EUDSA. This measures the area under the curve of storage in use against elapsed time. For more information, see Storage occupancy counts.
- 116 (TYPE-A, 'SC24CHWM', 4 BYTES)
- Maximum amount (high-water mark) of user storage allocated to the user task below the 16 MB line, in the CICS® dynamic storage area (CDSA).
- 117 (TYPE-A, 'SCCGETCT', 4 BYTES)
- Number of user-storage GETMAIN requests issued by the user task for storage below the 16 MB line, in the CDSA.
- 118 (TYPE-A, 'SC24COCC', 8 BYTES)
- Storage occupancy of the user task below the 16 MB line, in the CDSA. This measures the area under the curve of storage in use against elapsed time. For more information, see Storage occupancy counts.
- 119 (TYPE-A, 'SC31CHWM', 4 BYTES)
- Maximum amount (high-water mark) of user storage allocated to the user task above the 16 MB line, in the extended CICS dynamic storage area (ECDSA).
- 120 (TYPE-A, 'SCCGETCT', 4 BYTES)
- Number of user-storage GETMAIN requests issued by the user task for storage above the 16 MB line, in the ECDSA.
- 121 (TYPE-A, 'SC31COCC', 8 BYTES)
- Storage occupancy of the user task above the 16 MB line, in the ECDSA. This measures the area under the curve of storage in use against elapsed time. For more information, see Storage occupancy counts.
441 (TYPE-A, 'SC64CGCT', 4 BYTES)
- Number of user-storage GETMAIN requests issued by the user task
for storage above the bar, in the CICS dynamic storage area (GCDSA).
- 442 (TYPE-A, 'SC64CHWM', 4 BYTES)
- Maximum amount (high-water mark) of user storage, rounded up to
the next 4K, allocated to the user task above the bar, in the CICS
dynamic storage area (GCDSA).
- 443 (TYPE-A, 'SC64UGCT', 4 BYTES)
- Number of user-storage GETMAIN requests issued by the user task
for storage above the bar, in the user dynamic storage area (GUDSA).
- 444 (TYPE-A, 'SC64UHWM', 4 BYTES)
- Maximum amount (high-water mark) of user storage, rounded up to
the next 4K, allocated to the user task above the bar, in the user
dynamic storage area (GUDSA).
| Field | UDSA | EUDSA | CDSA | ECDSA | GCDSA |
GUDSA |
|---|---|---|---|---|---|---|
| GETMAIN request count | 054 | 105 | 117 | 120 | 441 |
443 |
| High-water mark | 033 | 106 | 116 | 119 | 442 |
444 |
| Occupancy | 095 | 107 | 118 | 121 | n/a |
n/a |
Shared storage fields in group DFHSTOR
- 144 (TYPE-A, 'SC24SGCT', 4 BYTES)
- Number of storage GETMAIN requests issued by the user task for shared storage below the 16 MB line, in the CDSA or SDSA.
- 145 (TYPE-A, 'SC24GSHR', 4 BYTES)
- Number of bytes of shared storage obtained by the user task by using a GETMAIN request below the 16 MB line, in the CDSA or SDSA.
- 146 (TYPE-A, 'SC24FSHR', 4 BYTES)
- Number of bytes of shared storage released by the user task by using a FREEMAIN request below the 16 MB line, in the CDSA or SDSA.
- 147 (TYPE-A, 'SC31SGCT', 4 BYTES)
- Number of storage GETMAIN requests issued by the user task for shared storage above the 16 MB line, in the ECDSA or ESDSA.
- 148 (TYPE-A, 'SC31GSHR', 4 BYTES)
- Number of bytes of shared storage obtained by the user task by using a GETMAIN request above the 16 MB line, in the ECDSA or ESDSA.
- 149 (TYPE-A, 'SC31FSHR', 4 BYTES)
- Number of bytes of shared storage released by the user task by using a FREEMAIN request above the 16 MB line, in the ECDSA or ESDSA.
- 445 (TYPE-A, 'SC64SGCT', 4 BYTES)
- Number of storage GETMAIN requests issued by the user task for
shared storage above the bar, in the GCDSA or GSDSA.
- 446 (TYPE-A, 'SC64GSHR', 4 BYTES)
- Amount of shared storage obtained by the user task by using a
GETMAIN request above the bar, in the GCDSA or GSDSA. The total number
of bytes obtained is rounded up to the next 4096 bytes, and the resulting
number of 4K pages is displayed.
- 447 (TYPE-A, 'SC64FSHR', 4 BYTES)
- Amount of shared storage released by the user task by using a
FREEMAIN request above the bar, in the GCDSA or GSDSA. The total number
of bytes obtained is rounded up to the next 4096 bytes, and the resulting
number of 4K pages is displayed.
| Field | CDSA or SDSA | ECDSA or ESDSA | GCDSA or GSDSA |
|---|---|---|---|
| GETMAIN request count | 144 | 147 | 445 |
| Shared storage obtained | 145 | 148 | 446 |
| Shared storage released | 146 | 149 | 447 |
Program storage fields in group DFHSTOR
For
more information on program storage see Storage manager statistics.
Note: If a task loads
the same program several times, the fields in this group might not
reflect the true high-water mark of program storage used by the task.
The fields are incremented each time the LOAD command is issued, but
if the program has already been loaded by the task, the existing copy
of the program is used, meaning that only one copy of the program
exists in storage. Because of this, for tasks that repeatedly load
the same program, the data in the fields PCSTGHWM, PC24BHWM, PC31RHWM,
PC31AHWM, PC31CHWM, PC24CHWM, PC24SHWM, PC31SHWM and PC24RHWM should
be used with caution.
- 087 (TYPE-A, 'PCSTGHWM', 4 BYTES)
- Maximum amount (high-water mark) of program storage in use by the user task both above and below the 16 MB line.
- 108 (TYPE-A, 'PC24BHWM', 4 BYTES)
- Maximum amount (high-water mark) of program storage in use by the user task below the 16 MB line. This field is a subset of PCSTGHWM (field id 087) that resides below the 16 MB line.
- 122 (TYPE-A, 'PC31RHWM', 4 BYTES)
- Maximum amount (high-water mark) of program storage in use by the user task above the 16 MB line, in the extended read-only dynamic storage area (ERDSA). This field is a subset of PC31AHWM (field id 139) that resides in the ERDSA.
- 139 (TYPE-A, 'PC31AHWM', 4 BYTES)
- Maximum amount (high-water mark) of program storage in use by the user task above the 16 MB line. This field is a subset of PCSTGHWM (field id 087) that resides above the 16 MB line.
- 142 (TYPE-A, 'PC31CHWM', 4 BYTES)
- Maximum amount (high-water mark) of program storage in use by the user task above the 16 MB line, in the extended CICS dynamic storage area (ECDSA). This field is a subset of PC31AHWM (139) that resides in the ECDSA.
- 143 (TYPE-A, 'PC24CHWM', 4 BYTES)
- Maximum amount (high-water mark) of program storage in use by the user task below the 16 MB line, in the CICS dynamic storage area (CDSA). This field is a subset of PC24BHWM (108) that resides in the CDSA.
- 160 (TYPE-A, 'PC24SHWM', 4 BYTES)
- Maximum amount (high-water mark) of program storage in use by the user task below the 16 MB line, in the shared dynamic storage area (SDSA). This field is a subset of PC24BHWM (108) that resides in the SDSA.
- 161 (TYPE-A, 'PC31SHWM', 4 BYTES)
- Maximum amount (high-water mark) of program storage in use by the user task above the 16 MB line, in the extended shared dynamic storage area (ESDSA). This field is a subset of PC31AHWM (139) that resides in the ESDSA.
- 162 (TYPE-A, 'PC24RHWM', 4 BYTES)
- Maximum amount (high-water mark) of program storage in use by the user task below the 16 MB line, in the read-only dynamic storage area (RDSA). This field is a subset of PC24BHWM (108) that resides in the RDSA.
