[
https://issues.apache.org/jira/browse/LOG4J2-1892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel R updated LOG4J2-1892:
-----------------------------
Environment:
OSX 10.11 JDK 7 Jetty 9.2
but also observed in Docker container JDK 8/Tomcat 8
was:JDK 7/Jetty 9.2 but also observed in JDK 8/Tomcat 8
> High constant CPU usage with Async appender DisruptorBlockingQueue spinPolicy
> 'WAITING'
> ---------------------------------------------------------------------------------------
>
> Key: LOG4J2-1892
> URL: https://issues.apache.org/jira/browse/LOG4J2-1892
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 2.8.2
> Environment: OSX 10.11 JDK 7 Jetty 9.2
> but also observed in Docker container JDK 8/Tomcat 8
> Reporter: Daniel R
> Labels: performance
> Attachments: with spinPolicy BLOCKING.png, with spinPolicy WAITING.png
>
>
> With {{spinPolicy="WAITING"}} CPU usage shoots up to 11% and stays right
> there with no app activity.
> With {{spinPolicy="BLOCKING"}} CPU usage goes down to near 0% with no app
> usage.
> See screenshots attached.
> In my local dev environment the Async appender is configured but not used
> (commented out in the <Root> section.
> {{log4j2.xml}} config excerpt:
> {code:xml}
> <Appenders>
> ...
> <!-- Wrap the email error appender into an asynchronous appender -->
> <Async name="ASYNC_EMAIL_ERROR" bufferSize="128" >
> <DisruptorBlockingQueue spinPolicy="WAITING"/>
> <AppenderRef ref="EMAIL_ERROR" />
> </Async>
> </Appenders>
> <Root level="INFO">
> <AppenderRef ref="CONSOLE"/>
> <!--AppenderRef ref="FILE"/-->
> <!--AppenderRef ref="FILE_ERROR"/-->
> <!--AppenderRef ref="ASYNC_EMAIL_ERROR"/-->
> </Root>
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
