z/OS MVS JCL Reference
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PERFORM parameter

z/OS MVS JCL Reference

Parameter type

Keyword, optional



Beginning with z/OS® V1R3, WLM compatibility mode is no longer available. Accordingly, the information that pertains specifically to WLM compatibility mode is no longer valid. It has been included for reference purposes, and for use on backlevel systems.

Use the PERFORM parameter in WLM compatibility mode to specify the performance group for the job step. The installation-defined performance groups determine the rate at which associated steps have access to the processor, storage, and channels.

In WLM goal mode, any PERFORM parameter on an EXEC statement for a job or a started procedure is ignored. However, for a TSO session, a PERFORM parameter specified on the EXEC statement of the TSO logon procedure, or entered on the TSO logon panel, can be used for classification of the session to a service class or report class. For details on how to use workload management classification rules to map a PERFORM value to a service class or report class, see z/OS MVS Planning: Workload Management.

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