One for each structure
| Offsets | Name | Length | Format | Description | |
|---|---|---|---|---|---|
| 0 | 0 | R744SNAM | 16 | EBCDIC | Name of connected structure in this coupling facility. |
| 16 | 10 | R744SVER | 8 | binary | Structure version number. |
| 24 | 18 | R744STYP | 1 | binary | Structure type identifier.
|
| 25 | 19 | R744SFLG | 1 | binary | Status Flags.
|
| 26 | 1A | 1 | Reserved. | ||
| 27 | 1B | R744SLEC | 1 | binary | Lock structure only: lock table entry characteristic. |
| 28 | 1C | R744SLEL | 4 | binary | List structure: limit on number of list entries. The estimated maximum number of list entries that may reside in storage class memory is not included. Lock structure: limit on number of data elements. |
| 32 | 20 | R744SLEM | 4 | binary | List structure: current number of list entries in use. The number of list entries that currently reside in storage class memory is not included. Lock structure: current number of data elements in use. |
| 36 | 24 | R744SLTL | 4 | binary | Lock structure only: limit on number of lock table entries. |
| 40 | 28 | R744SLTM | 4 | binary | Lock structure only: Current number of lock table entries in use. |
| 44 | 2C | R744SSTA | 8 | l_float |  The number of list, lock, or
cache requests that were to be executed synchronously at the coupling
facility, but which were changed to an asynchronous operation due
to lack of resources. |
| 52 | 34 | R744STRC | 8 | l_float | The total number of IXLLIST, IXLCACHE, or IXLLOCK requests made. This field will not necessarily equal the sum or R744SSRC, R744SARC, and R744SSTA due to internal processing. Use of the batch unlock function can produce large discrepancies because R744STRC is incremented for each lock being released, but only one coupling facility operation is executed. |
| 60 | 3C | R744STAC | 8 | l_float | The total number of IXLLOCK requests that could not be satisfied immediately because of lock contention. |
| 68 | 44 | R744SARC | 8 | l_float | The total number of operations executed asynchronously at the coupling facility. |
| 76 | 4C | R744SATM | 8 | binary | Summed service time for asynchronous requests in microseconds. |
| 84 | 54 | R744SASQ | 8 | binary | Summed squares of service time for asynchronous requests. |
| 92 | 5C | R744SSRC | 8 | l_float | Count of number of times for synchronous requests. |
| 100 | 64 | R744SSTM | 8 | binary | Summed service time for synchronous requests in microseconds. |
| 108 | 6C | R744SSSQ | 8 | binary | Summed squares of service time for synchronous requests. |
| 116 | 74 | R744SQRC | 8 | l_float | Count of number of times for queued requests. |
| 124 | 7C | R744SQTM | 8 | binary | Summed queue delay time in microseconds. |
| 132 | 84 | R744SQSQ | 8 | binary | Summed squares of delay time for queued requests. |
| 140 | 8C | R744SDRC | 8 | l_float | Number of times a request was found delayed in case of dump serialization. |
| 148 | 94 | R744SDTM | 8 | binary | Summed dump delay time in microseconds. |
| 156 | 9C | R744SDSQ | 8 | binary | Summed squares of dump delay time. |
| 164 | A4 | R744SDMP | 8 | l_float | Number of times dump serialization was found for this structure (list and cache structures only). |
| 172 | AC | R744SHTO | 8 | l_float | Total number of requests waiting on the high priority queue. |
| 180 | B4 | R744SHMN | 4 | binary | Minimum number of requests waiting on the high priority queue during this interval. |
| 184 | B8 | R744SHMX | 4 | binary | Maximum number of requests waiting on the high priority queue during this interval. |
| 188 | BC | R744SLTO | 8 | l_float | Total number of requests waiting on the low priority queue. |
| 196 | C4 | R744SLMN | 4 | binary | Minimum number of requests waiting on the low priority queue during this interval. |
| 200 | C8 | R744SLMX | 4 | binary | Maximum number of requests waiting on the low priority queue during this interval. |
| 204 | CC | R744SDTO | 8 | l_float | Total number of requests delayed because dump serialization is in progress. |
| 212 | D4 | R744SDMN | 4 | binary | Minimum number of requests delayed because dump serialization is in progress during this interval. |
| 216 | D8 | R744SDMX | 4 | binary | Maximum number of requests delayed because dump serialization is in progress during this interval. |
| 220 | DC | R744SCN | 8 | l_float | Lock structure only: number of times any request encountered lock contention. |
| 228 | E4 | R744SFCN | 8 | l_float | Lock structure only: number of times any request encountered false lock contention (storage contention within the structure). |
| 236 | EC | R744SSIZ | 4 | binary | Allocated size of structure (units = 4K byte blocks). |
| 240 | F0 | R744SMAS | 4 | binary | Maximum structure size. |
| 244 | F4 | R744SMIS | 4 | binary | Minimum structure size. |
| 248 | F8 | R744SDEC | 4 | binary | Cache structure only: Total directory entry count. |
| 252 | FC | R744SDEL | 4 | binary | Cache structure only: Total data element count. |
| 256 | 100 | R744SNLH | 4 | binary | List structure only: Number of list headers. |
| 260 | 104 | R744SMAE | 4 | binary | List structure only: maximum number of elements. The estimated maximum number of list elements that may reside in storage class memory is not included. |
| 264 | 108 | R744SCUE | 4 | binary | List structure only: current number of elements in use. The number of list elements that currently reside in storage class memory is not included. |
| 268 | 10C | R744CDSI | 2 | binary | Index to first Cache data section. |
| 270 | 10E | R744CDNE | 2 | binary | Number of Cache data section entries. |
| 272 | 110 | R744SPLN | 8 | l_float | Count of peer-link-not-available conditions. |
| 280 | 118 | R744SPES | 8 | l_float | Count of execution-suppressed conditions. |
| 288 | 120 | R744SPTC | 8 | l_float | Count of waiting-for-peer-subchannel conditions. |
| 296 | 128 | R744SPST | 8 | binary | Total peer-subchannel-wait time (microseconds). |
| 304 | 130 | R744SPSS | 8 | binary | Square of total peer-subchannel-wait time (microseconds squared). |
| 312 | 138 | R744SRTC | 8 | l_float | Count of condition 'waiting for peer subchannel with reserve held'. |
| 320 | 140 | R744SRST | 8 | binary | Total peer-subchannel-wait-with-reserve time (microseconds). |
| 328 | 148 | R744SRSS | 8 | binary | Square of total peer-subchannel-wait-with-reserve time (microseconds squared). |
| 336 | 150 | R744SCTC | 8 | l_float | Count of condition 'waiting for peer completion'. |
| 344 | 158 | R744SCST | 8 | binary | Total waiting-for-peer-completion time (microseconds). |
| 352 | 160 | R744SCSS | 8 | binary | Square of total waiting-for-peer-completion time (microseconds squared). |
| 360 | 168 | R744SLSV | 8 | binary | Logical structure version number. |
| 368 | 170 | R744SETM | 8 | l_float | Structure execution time (microseconds). Valid if R744FLVL > 14. |
| 376 | 178 | R744SISC | 2 | binary | Index to Storage Class Memory data section. This field is zero if there is no SCM information available. |
| 378 | 17A | R744SNSC | 2 | binary | Number of Storage Class Memory data sections. |