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https://issues.apache.org/jira/browse/CXF-6825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15187206#comment-15187206
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Alessio Soldano commented on CXF-6825:
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I can do some tries with it in the next days, was thinking about the same in
the past but never actually tried.
Yotam, perhaps you can verify if this helps in your scenario too.
> Performance bottle neck due to synchronize block on each read
> -------------------------------------------------------------
>
> Key: CXF-6825
> URL: https://issues.apache.org/jira/browse/CXF-6825
> Project: CXF
> Issue Type: Bug
> Components: Bus, JAX-RS
> Affects Versions: 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.2.0, 3.1.6
> Environment: All environments
> Reporter: Yotam Madem
> Fix For: 3.2.0, 3.1.6
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> In our (IBM MobileFirst foundation) performance tests it is possible to see
> that many threads are stuck at:
> "LargeThreadPool-thread-1505" daemon prio=10 tid=0x00007f10f020b800
> nid=0x31fc waiting for monitor entry [0x00007f12bfffd000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.cxf.BusFactory.getThreadBusHolder(BusFactory.java:120)
> - waiting to lock <0x00000000c6b99020> (a java.util.WeakHashMap)
> at
> org.apache.cxf.BusFactory.getAndSetThreadDefaultBus(BusFactory.java:202)
>
> (We use version 3.1.0)
> I did a test fix locally and it seems to resolve our problem so I submitted 2
> pull requests:
> for 3.1.6: https://github.com/apache/cxf/pull/119
> for 3.2.0: https://github.com/apache/cxf/pull/120
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