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Posted to dev@qpid.apache.org by "Keith Wall (JIRA)" <ji...@apache.org> on 2015/12/12 19:31:46 UTC

[jira] [Commented] (QPID-6944) SelectorThread causing livelock

    [ https://issues.apache.org/jira/browse/QPID-6944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15054523#comment-15054523 ] 

Keith Wall commented on QPID-6944:
----------------------------------

Mark,

What is your JDK version and operating system version? Java Broker v6.0.0 now uses NIO select for servicing AMQP connections.  I am wondering if you are running into an epoll selector defect. Does the CPU spike immediate right after startup or after a period of normal operation?

> SelectorThread causing livelock
> -------------------------------
>
>                 Key: QPID-6944
>                 URL: https://issues.apache.org/jira/browse/QPID-6944
>             Project: Qpid
>          Issue Type: Bug
>    Affects Versions: qpid-java-6.0
>            Reporter: Mark Soderquist
>         Attachments: threaddump-1449856663270.tdump
>
>
> The org.apache.qpid.server.transport.SelectorThread is causing live lock. While the application still functions it causes the CPU to run at nearly 100%. See attached thread dump.



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