Coupling facility data tables

The CPU instruction data provided here was obtained using a 9672-R55 system.

Two tables are provided:

Note that the asynchronous requests do take more CPU time to process. The response times will also be slightly longer than for synchronous requests. CPU instructions per API call for record lengths less than 4K are as follows:

API CALL CONTENTION LOCKING RECOVERABLE
READ 11.8 11.8 11.8
READ/UPDATE 12.0 22.2 22.4
REWRITE 19.5 24.0 33.0
WRITE 8.0 8.0 13.0
DELETE 7.0 11.0 16.5

CPU instructions per API call for record lengths greater than 4K, are

API CALL CONTENTION LOCKING RECOVERABLE
READ 15.3 15.3 15.3
READ/UPDATE 15.0 25.7 25.9
REWRITE 23.0 27.5 36.5
WRITE 11.5 11.5 16.5
DELETE 10.5 14.5 20.0
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