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https://issues.apache.org/jira/browse/ARTEMIS-2949?focusedWorklogId=500780&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-500780
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ASF GitHub Bot logged work on ARTEMIS-2949:
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Author: ASF GitHub Bot
Created on: 14/Oct/20 17:52
Start Date: 14/Oct/20 17:52
Worklog Time Spent: 10m
Work Description: franz1981 edited a comment on pull request #3303:
URL: https://github.com/apache/activemq-artemis/pull/3303#issuecomment-708561455
This PR reduce dramatically the amount of GC produced on the libaio blocked
poll and the CPU time with it, see
`master`
while this PR
That's 10 seconds CPU flamegraphs of the libaio poller thread for 1000
producer/consumer/queues sending 100 bytes persistent msg using Core JMS.
In violet there are the calls to `LinkedList::*` that are now disappeared
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Issue Time Tracking
-------------------
Worklog Id: (was: 500780)
Time Spent: 0.5h (was: 20m)
> Reduce GC on OperationContext::checkTasks
> -----------------------------------------
>
> Key: ARTEMIS-2949
> URL: https://issues.apache.org/jira/browse/ARTEMIS-2949
> Project: ActiveMQ Artemis
> Issue Type: Improvement
> Reporter: Francesco Nigro
> Assignee: Francesco Nigro
> Priority: Minor
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> OperationContext::checkTasks is allocating Iterators that seems not scalar
> replaced and that could be saved by using the Queue API of LinkedList.
> Similarly, store only tasks can use a reduced (in term of footprint) task
> holder to reduce the allocation pressure.
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