Github user franz1981 commented on the issue:
https://github.com/apache/activemq-artemis/pull/2480
> Whats the concurrent performance on this. Do you have some stats?
Only allocations profiles and given that is in the hot path, we have a LOT
of ConcurrentLinkedQueue::Node saved by this change.
The overall perf won't change by a bit (if not a tiny improvement), because
it isn't a bottleneck AFAIK.
> Re sync lock blocks. Could be replaced with lock on this and or sync
methods.
Agree at a first look, but I do not remember the reason why was used a
separate lock TBH
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