3 Replies Latest reply on Sep 11, 2018 10:30 AM by Claudio Miranda

    How do I determine what Java code is causing 100% CPU utilization with Wildfly 11?

    D. Alvarado Newbie

      Hi,

       

      We're using Wildfly 11 with JDK 8 on Amazon Linux.  Recently, through top, we've noticed unreal CPU utilizations ...

       

       

      1908 jboss     20   0  537m 8788 2780 S 299.8  0.0  69190:14 java                                                                             

      2088 jboss     20   0 28.0g  12g  33m S 192.6 44.8   9272:06 java                                                                             

      1320 root      20   0  729m  25m 8860 S  9.0  0.1 660:29.01 newrelic-infra                                                                    

        364 apache    20   0  174m 6516 4772 S  1.0  0.0   0:02.36 httpd                                                                             

      1092 apache    20   0  174m 6516 4768 S  0.7  0.0   0:02.56 httpd                                                                             

      1483 apache    20   0  174m 6516 4768 S  0.7  0.0   0:02.09 httpd

       

      The PID corresponds to the Wildfly process we have running on the box, which is started with

       

       

      /usr/java/default/bin/java -D[Standalone] -server -Xms64m -Xmx25600m -XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=1024m -Djava.net.preferIPv4Stack=true -Djboss.modules.system.pkgs=org.jboss.byteman,com.newrelic -java.awt.headless=true -javaagent:/usr/java/wildfly/newrelic/newrelic.jar -Dorg.jboss.boot.log.file=/usr/java/wildfly/standalone/log/server.log -Dlogging.configuration=file:/usr/java/wildfly/standalone/configuration/logging.properties -jar /usr/java/wildfly/jboss-modules.jar -mp /usr/java/wildfly/modules org.jboss.as.standalone -Djboss.home.dir=/usr/java/wildfly -Djboss.server.base.dir=/usr/java/wildfly/standalone -c standalone.xml

       

       

      Is there a way using the CLI tool or some other Wildfly method taht we can determine what Java code is causing the high thread utilization?    The NewRelic monitoring tool we have set up is only able to tell us that the Wildfly process is the culprit, but nothing within that.  It's not an option to redeploy new Java code at this time.

       

      Thanks, - Dave