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Status Not under consideration
Workspace MQ, MQ Advanced & MQ Appliance
Created by Guest
Created on Nov 25, 2024

RELATED IDEAS

To avoid restarting the Queue Manager, the OS should automatically release the allocated shmall value once queue processing is complete.

See this idea on ideas.ibm.com

Why this is useful:
Implementing a solution to automatically release the 'shmall' value after messages are processed in the queues is critical for seamless operations, especially in production environments where high availability and minimal downtime are essential. 
Restarting the Queue Manager disrupts operations, causing unnecessary delays and potential impact on applications, which is not acceptable for businesses handling high-criticality workloads.

How it should work:
IBM MQ should include a mechanism to monitor and reclaim the allocated 'shmall' memory after queue processing is complete. The expected functionality from the customer end is that the memory is properly deallocated by the OS automatically after queue processing, without requiring a Queue Manager restart.

Idea priority High
  • Admin
    Mark Taylor
    Reply
    |     Jan 14, 2025

    This is not something we plan to change in MQ. MQ tends to keep hold of allocated resources because it's more likely than not to need those resources again soon.


    From development:

    If the comes down to 'spikey' load causing deep queue build up at times, then you would in any case need to avoid overcommitting the shared memory on the system as a whole to be able to accommodate those spikes - so it's not clear that temporarily releasing MQ usage would actually be of much benefit to anyone.

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