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VTAPE_PARM_zIIP_CONFLICT

Description

The zIIPExploitation attribute indicates that SVTS uses the zIIP specialty processors to process virtual I/O activity. However, the PercentRunOnzIIP attribute indicates that no work is scheduled on those processors.

Best Practice

The use of zIIP specialty processors in a CA Vtape environment offers superior performance advantages over non-zIIP processor configurations. Evaluate the zIIPExploitation and PercentRunOnzIIP attributes defined in the respective Startup Options and Dynamic Options sections of the respective CA Vtape parmlib. Change the attributes to enable CA Vtape exploitation of zIIP if a zIIP specialty processor is installed.

To enable CA Vtape exploitation of zIIP, specify the zIIPExploitation attribute as zIIPExploitation=Y, set the PercentRunOnzIIP attribute to a value greater than 0, and restart CA Vtape.

To disable CA Vtape exploitation of zIIP, specify the attribute as zIIPExploitation=N and restart CA Vtape.

Parameters Accepted

None

Debug Support

Yes

Verbose Support

Yes

Reference

For more information, see the chapters "Operational Considerations" and "The Parameter Library (PARMLIB)" in the Configuration Guide.

Messages

SVTH4601I

CA Vtape has detected an inconsistency between the settings of the zIIPExploitation and the PercentRunOnzIIP attributes.