This section describes the additional costs of communication between two CICS® regions using the following communication methods:
MRO XM | MRO XCF (via CTC) | MRO XCF (via CF) | ISC LU6.2 |
---|---|---|---|
37.0 | 43.0 | 66.0 | 110.0 |
MRO XM | MRO XCF (via CTC) | MRO XCF (via CF) | |
---|---|---|---|
Initiate/terminate environment | 13.2 | 13.2 | 13.2 |
Each function shipping request | 9.0 | 23.4 | 48.4 |
Syncpoint flow | 9.0 | 23.4 | 48.4 |
Notes:
The above costs relate to CICS systems with long running mirrors. ISC LU6.2 does not support MROLRM=YES. Included in the initiate/terminate environment is the cost of:
For example, if you were migrating from a local file access to MRO XM and requesting 6 function ships per transaction, the additional cost could be calculated as follows: 13.2(Initiate/Terminate)+6(requests)*9.0(Request Cost)+ 9.0(Syncpoint) = 76.0 |
Without long running mirrors each function ship read request incurs the cost of session allocation and mirror initialization and termination. However, the first change to a protected resource (for example, a READ UPDATE or a WRITE) causes the session and mirror to be held until a syncpoint.
MRO XM | MRO XCF (via CTC) | MRO XCF (via CF) | ISC LU6.2 |
---|---|---|---|
21.4 | 35.0 | 59.9 | 115.0 |