MSIR.1097
MSIR.1097 DFLTCC hardware compression not availab le
During initialization of the compression subsystem, Model 204 determined that the hardware DEFLATE Conversion Facility (the DFLTCC instruction) is not available on this processor. Deflate compression and inflate decompression will be performed by the equivalent software routines instead.
The results produced are identical either way; only the CPU cost differs, with the software implementation costing substantially more than the hardware instruction. The facility is detected at initialization by testing facility bit 151 of the stored facility list, and is available on IBM z15 and later processors.
Response: None required if the processor is not expected to provide the facility. If hardware compression is expected, have the system programmers confirm that the processor provides the DEFLATE Conversion Facility and that it is made available to this operating system image; under a hypervisor the facility must also be exposed to the guest. Compare with MSIR.1096, which is issued when the facility is available.
Message attributes:
| RETCODEO=0 | Sets online return code |
|---|---|
| RETCODEB=0 | Sets batch (single user) return code |
| CLASS=I | Information class; the message can be suppressed with the X'02' bit setting of the MSGCTL parameter |
| AUDITMS | Writes the message with line type MS to the audit trail |
| NOCOUNT | Does not increment the error count (ERCNT) parameter |
| OPR | Writes the message to the (operator) console |