[jboss-jira] [JBoss JIRA] (WFLY-6250) JMX inefficiently handles resource adapters

[Stefano Maestri (JIRA)]

     [ https://issues.jboss.org/browse/WFLY-6250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefano Maestri moved JBEAP-3513 to WFLY-6250:
----------------------------------------------

              Project: WildFly  (was: JBoss Enterprise Application Platform)
                  Key: WFLY-6250  (was: JBEAP-3513)
             Workflow: GIT Pull Request workflow   (was: CDW with loose statuses v1)
          Component/s: JCA
                       JMX
                           (was: JCA)
                           (was: JMX)
       Target Release:   (was: 7.backlog.GA)
    Affects Version/s: 10.0.0.Final
                           (was: 7.0.0.ER5)


> JMX inefficiently handles resource adapters
> -------------------------------------------
>
>                 Key: WFLY-6250
>                 URL: https://issues.jboss.org/browse/WFLY-6250
>             Project: WildFly
>          Issue Type: Bug
>          Components: JCA, JMX
>    Affects Versions: 10.0.0.Final
>            Reporter: Stefano Maestri
>            Assignee: Stefano Maestri
>         Attachments: README.txt, xaa, xab, xac, xad
>
>
> If you connect to JBoss over JMX when it has many rars deployed (over 500), long running high CPU is seen in the following calls:
> {code}
>         at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:188)
>         at org.jboss.as.jmx.model.ResourceAccessControlUtil.getResourceAccess(ResourceAccessControlUtil.java:85)
>         at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:51)
>         at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:61)
>         at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:61)
>         at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:61)
>         at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:61)
>         at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:61)
>         at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:61)
>         at org.jboss.as.jmx.model.RootResourceIterator.iterate(RootResourceIterator.java:43)
> {code}
> It's evident that it is iterating over each deployment (each resource adapter counting as a deployment), but for each deployment, it is also iterating over all resource adapter's and their config properties.  So it would iterate over all 500+ resource adapters once for each deployment, so it iterates over all 500 adapters at least 500 times.  Is there anyway we could avoid that n^2 iteration for deployed rars?



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