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https://issues.apache.org/jira/browse/ARTEMIS-1383?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16154144#comment-16154144
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ASF GitHub Bot commented on ARTEMIS-1383:
-----------------------------------------
Github user clebertsuconic commented on the issue:
https://github.com/apache/activemq-artemis/pull/1505
the biggest chunk you would see in performance would be by changing the
QueueImpl's collection.
There are a few requirements we need to meet on that collection. starting
from converting PriorityLinkedListTest to work with the same semantics on
ChunkedQueue.
I don't see an implementation for Iterator at your Queue though.
> Improved Priority queue
> -----------------------
>
> Key: ARTEMIS-1383
> URL: https://issues.apache.org/jira/browse/ARTEMIS-1383
> Project: ActiveMQ Artemis
> Issue Type: Improvement
> Components: Broker
> Reporter: Francesco Nigro
> Assignee: Francesco Nigro
>
> The original PriorityLinkedList implementation is based on a double linked
> list implementation that suffer of:
> * fragmentation along the heap
> * pointer chasing due to the presence of nodes
> * allocation heavy (ie each add operation forces allocation of nodes)
> * high hidden (ie the nodes) memory footprint that lead to wrong memory
> estimations
> It is possible to provide a specialized chunked implementation that can
> address all these issues while providing a better performance (throughput,
> latency and memory footprint wise).
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