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Status Under review
Workspace MQ, MQ Advanced & MQ Appliance
Created by Guest
Created on Nov 5, 2025

RELATED IDEAS

Make an new parameter to MQ-channel-definitions defining minimum-MQ-GET-WAIT-time

Many decentral MQ-applications are coded in Spring and Spring has a default MQ-GET-WAIT-time of one second, which decentral application-programmers typically don't worry about, but this relatively small MQ-GET-WAIT-time can cause a lot of CPU-overhead in the MQ-CHIN-task, especially when the application-programmer has set up an excessively high number of parallel sessions. Many installations have coded an MQ-channel-receive-exit to increase the MQ-GET-WAIT-time to prevent the high CPU-usage in the MQ-CHIN-task.
Note that a higher MQ-GET-WAIT-time will typically result in a faster (or absolutely not slower) response to the MQ-applications, as the GET-WAIT-request is expedited as soon as an MQ-message is received, when you are staying waiting ready for a MQ-message to arrive. 
Instead of many installations coding their own MQ-channel-receive-exit, it would make sense that IBM added a new optional parameter to MQ-channel-definitions: minimum-MQ-GET-WAIT-time to make it possible to overrule the MQ-GET-WAIT-time from the calling MQ-application.
Note that it will only make sense to use this new parameter on MQ-channels with characteristics as described above.   
Also note that other MQ-applications than MQ-applications coded using Spring can have the characteristics described above, Spring is just a typical example.  

Idea priority Medium
  • Guest
    Jan 7, 2026

    We have exactly the same problem. Applications coded in Spring make millions or even tens of millions of GET calls per day and only a few hundred thousands are valid GET calls. We are very slowly convincing application developers to increase MQ-GET-WAIT-time to reduce the number of GET calls without data. If minimum-MQ-GET-WAIT-time is a parameter in the MQ channel definition, it will be much easier to reduce the number of GET calls without changing the code and not wasting CPU.

    Reply
  • Guest
    Jan 7, 2026

    It will make sense to both z/OS version and distributed versions, as they also burn a lot of CPU, and is also causing a lot of un-necessary network traffic. 
    And it would be nice to have the feature delivered also to current versions of MQ like 9.3 LTS. 

    Reply
  • Guest
    Nov 13, 2025

    Many poorly written apps will issue MQGET without ANY wait time option. So the solution needs to allow for this as well as increasing the MQGMO_WAIT value.

    Reply

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