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Jboss agent got disconnected due to metric clamping

  • 1.  Jboss agent got disconnected due to metric clamping

    Posted 07-09-2015 03:14 AM

    We have two Jboss agent which got disconnected due to metric clamping, i have increased the historic clamp on EM servers, but Agents still are not connecting, any suggestions. We cannot restart our JBoss servers for agents to restart.



  • 2.  Re: Jboss agent got disconnected due to metric clamping

    Posted 07-09-2015 03:41 AM

    As you may know, EM has live metric clamp setting - introscope.enterprisemanager.metrics.live.limit , is it ok?

    Also, EM has a limitation of number of Agents:


    introscope.enterprisemanager.agent.connection.limit

    introscope.enterprisemanager.disconnected.historical.agent.limit

     

    Have you seen any error messages in EM or Agent?



  • 3.  Re: Jboss agent got disconnected due to metric clamping

    Posted 07-09-2015 04:09 AM

    We have below configured, none of them reaching max

    introscope.enterprisemanager.metrics.live.limit = 120000

     

     

    introscope.enterprisemanager.agent.connection.limit = 400

    introscope.enterprisemanager.disconnected.historical.agent.limit = 400

     

    In Agent logs I noticed messages like

     

    [IntroscopeAgent.WilyTransactionStructure] Transaction trace component limit of 5000 reached, recording of any new components will cease for this transaction.

     

    [IntroscopeAgent.Agent] Waited 600000 ms But did not receive the response for the message com.wily.isengard.messageprimitives.service.MessageServiceCallMessage: {com.wily.isengard.registry.IRegistryService.deleteEntry, v1, [/service/com.wily.introscope.spec.agent.beans.dynamicinstrumentation.IAgentDynamicInstrumentationServiceWithCallbacks/xxxx|JBoss|xxxx-***]} from address Agent_557.main:264 to service address Server.main:1 from thread PO Route Down Executor -- We will not wait any longer



  • 4.  Re: Jboss agent got disconnected due to metric clamping

    Posted 07-09-2015 05:10 AM
    Hi akshat,

    If the metric clamps not reached and if agents are waiting for a connection,it could be a different issue.

    Can you check your em logs for any information?Are collectors running with high CPU?

    Thanks,
    Karthik


  • 5.  Re: Jboss agent got disconnected due to metric clamping

    Posted 07-09-2015 09:36 AM

    you may already be aware but here's em performance tips just in case you haven't gone through them yet. https://content.plateau.com/nocache-content/ca/extended/product/apm/Enterprise_Manager_Performance_Tips.pdf



  • 6.  Re: Jboss agent got disconnected due to metric clamping

    Posted 07-29-2015 01:15 PM

    Dear Akshat:

        Does the above answer your questions or is additional assistance needed? If so, you may wish to consider to open a Support case.

    Thanks

    Hal German

    APM Support