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https://issues.apache.org/jira/browse/ARTEMIS-2571?focusedWorklogId=358299&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-358299
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ASF GitHub Bot logged work on ARTEMIS-2571:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 12/Dec/19 05:19
Start Date: 12/Dec/19 05:19
Worklog Time Spent: 10m
Work Description: franz1981 commented on issue #2913: ARTEMIS-2571 Remove
synchronization of ActiveMQServerImpl#getSessions()
URL: https://github.com/apache/activemq-artemis/pull/2913#issuecomment-564853817
@clebertsuconic I strongly suggest to use proper tools to get reliable
results ie JMH
I think
https://github.com/apache/qpid-proton-j/tree/master/tests/performance-jmh could
be a good way to start having some of them. On Netty there is already something
similar and JMH is not just for micro-benchmarks, but is ok for
macro-benchmarks as well. Next week I can help to provide some useful examples
on that, if you agree :)
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Issue Time Tracking
-------------------
Worklog Id: (was: 358299)
Time Spent: 2h 20m (was: 2h 10m)
> Remove unneccessary synchronization in ActiveMQServerImpl
> ---------------------------------------------------------
>
> Key: ARTEMIS-2571
> URL: https://issues.apache.org/jira/browse/ARTEMIS-2571
> Project: ActiveMQ Artemis
> Issue Type: Improvement
> Components: Broker, Web Console
> Affects Versions: 2.10.1
> Reporter: Sebastian T
> Priority: Minor
> Attachments: artemis-test.zip
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> The ActiveMQServerImpl sessions field is a ConcurrentHashMap. Synchronizing
> on the ActiveMQServerImpl object to iterate over the map is not necessary.
> ActiveMQServerImpl#getSession, ActiveMQServerImpl#removeSession and
> ActiveMQServerImpl#createSession also work on the sessions field without
> synchronizing on the ActiveMQServerImpl.
> Removing the synchronized keyword on the ActiveMQServerImpl#getSessions()
> methods e.g. improves loading of Connections view, especially when multiple
> administrators are using the UI.
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