ICSF periodically
records processing times for
coprocessor or accelerator operations
in subtype 20. Subtype 20 contains this information:
- The device type
- The time immediately before the operation begins
- The time immediately after the operation ends
- The time immediately after the results of the operation have been
communicated to the caller address space
- The number of processes waiting to submit work to the same coprocessor,
domain, and reference slot used by this operation
- The function code for this operation
- The coprocessor or accelerator processor number
- The coprocessor or accelerator serial number
- The coprocessor or accelerator domain
- A reference number that identifies an internal ICSF queue
element