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Status Future consideration
Workspace z/OS
Categories BCP_SMF
Created by Guest
Created on Aug 29, 2023

RELATED IDEAS

Avoid arbitrary MEMLIMIT=NOLIMIT assignments to REGION=0M jobs

Our IEFUSI->SMFLIMxx conversion was halted by an unpredictable design choice, which is: An implicit MEMLIMIT=NOLIMIT default when REGION=0M that *overrides* the explicit MEMLIMIT default in SMRPRMxx.

This creates problems, such as: If a user does not specify MEMLIMIT=NOLIMIT, then it will default to NOLIMIT when REGION=0M is specified or defaulted to.

We realize that we could code REQMEMLIMIT(NOLIMIT) in SMFLIMxx, but this will *also* override explicit MEMLIMIT=NOLIMIT requests, which is not desired.

So we are forced to either accept MEMLIMIT=NOLIMIT when it is not specified in JCL, or to accept something else when MEMLIMIT=NOLIMIT is specified/desired.

In all circumstances, the MEMLIMIT value in SMFPRMxx should be honored when MEMLIMIT is not specified in JCL and is not overridden in SMFLIMxx.

We can handle one job allocating 2GB memory, but cannot handle that job trying to allocate 16 exabytes.

This conditional behavior is something that no user would expect. It has several inherent problems and adds no value.

Idea priority High

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