ZIIPMODE control statement
Specifies whether HSSR engine offloads eligible VSAM ESDS I/O or OSAM LDS I/O workloads to zIIP processors.
This control statement is optional. The default is ZIIPMODE=NEVER.
- COND
- Offloads VSAM ESDS I/O or OSAM LDS I/O workloads to zIIP processors when all of the
following conditions are met:
- zIIP processor are available.
- The SGLXLOAD library of IMS Tools Base is specified to the STEPLIB or JOBLIB.
- VSAM ESDS is to be read using Media Manager. Media Manager is available only when the STEPLIB libraries are all APF-authorized. For more information, see DD statements.
- NEVER
- Does not offload any workload to zIIP processors. NEVER is the default to avoid unexpected performance degradation.
Tip: You can change the default value of this control statement by
creating an Installation Default Option Table (HPSCOPTI). For more information, see Setting installation default options.