DO NOT MERGE Remove CQv1 #14769
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DO NOT MERGE Remove CQv1 #14769
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lhoguin
commented
Nov 4, 2025
It was only used by CMQs and they have been removed a while back.
We avoid an extra unnecessary message to the queue.
And drop all terminology from antique CQ. Some terminology remains in the backing_queue_SUITE, to be addressed later.
These metrics make a lot less sense in today's CQ implementation. Today messages are either in memory about to be sent to the consumer, or on disk because they are further down the queue. Messages are no longer paged out to disk depending on memory pressure. So knowing how many transient messages are on disk is not as important. In practice almost all of them will be.
It duplicates the ?QUEUE:len and the #q_tail.count which together provide the same value.
This should reduce the number of calls we make to the queue's index/store and therefore improve performance.
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