I/O Queuing Data Section

This section contains entry one per LCU, described by triplet SMF78ASS.

Offsets Name Length Format Description
0 0 R783ID2 2 binary Logical control unit identifier.
2 2 R783DST 1 binary Data Status
Bit
Meaning when set
0
No hardware measurements available
1
Dynamically changed
2
Dynamically added
3
Configuration change attempted
4
LCU contains DCM managed channels
5
Path attributes are valid.
6
LCU has HyperPAV devices.
7
Reserved.
3 3   1   Reserved.
4 4 R783QSM 4 binary Sum of total length of the CU-HDR queue.
8 8 R783QCT 4 binary Number of entries on the CU-HDR queue.
12 C R783MCMN 2 binary Minimum number of DCM managed channels used.
14 E R783MCMX 2 binary Maximum number of DCM managed channels used.
16 10 R783MCDF 2 binary Defined number of DCM managed channels.
18 12   2   Reserved.
20 14 R783PTM 4 binary Accumulated path taken count for DCM managed channels.
24 18 R783DPBM 4 binary Accumulated director port busy count for DCM managed channels.
28 1C R783CUBM 4 binary Accumulated control unit busy count for DCM managed channels.
32 20 R783CBTM 4 binary Accumulated delay time for DCM-managed channels because of a busy control unit.
36 24 R783CMRM 4 binary Accumulated initial command response time for DCM-managed channels.
40 28 R783SBSM 4 binary Switch busy count summation for DCM-managed channels.
44 2C R783DCTM 4   Accumulated device connect time in units of 128 microseconds.
48 30 R783DDTM 4   Accumulated device disconnect time in units of 128 microseconds.
52 34 R783CSST 4 binary Channel subsystem wait time in units of 128 microseconds.
56 38 R783HCNT 2 binary Number of HyperPAV data sections for that LCU.
58 3A R783HIX 2 binary Index to first HyperPAV data section for that LCU.
Parent topic: Subtype 3 I/O Queuing Activity