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Status Not under consideration
Workspace z/OS
Categories USS
Created by Guest
Created on Sep 14, 2023

RELATED IDEAS

Provide more granular control over the maximum number of processes limits

Currently, the maximum number of processes is controlled by the MAXPROCSYS value in BPXPRMxx. There are warnings not to set this value too high as each process has the potential to consume its own address space. This means that MAXPROCSYS should not be set much higher than the MAXUSER otherwise too many processes might cause an ASID shortage. Tying MAXPROCSYS to MAXUSER is very limiting as setting MAXUSER too high can lead to other resource shortages (SQA, ESQA, etc) when that many address spaces run simultaneously. This is a major limitation for processes that do not require their own address spaces such as CICS socket connections and limits modernization efforts. Separate limits for processes that do and do not require their own address spaces would allow for more processes to be created without the need to increase MAXUSER to unreasonable values.

Idea priority Urgent
  • Guest
    Reply
    |     Jan 26, 2024
    Accounting of processes and the associated system limits are tied up with the UNIX standard and therefore difficult to change. The proper approach is to use threads rather than processes in cases like this.

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