8 Replies Latest reply on Sep 8, 2017 4:17 AM by Sascha Janz

    WildFly 9 goes up to 100 % CPU utiliazation after 3 hours

    Sascha Janz Master

      we are using WildFly 9  and a seam / jsf / jbpm application. the system runs up to 3 hours stable and then suddenly it goes up to 100 % CPU utialization

       

       

      I did some FlightRecording using JMC but did not find out which thread is responsible for the high cpu usage.

       

       

      our application is not causing the problem.

       

       

      any ideas/hints  what further to check?

       

      we got over 200 users. the subsytem:io was configured with default values.

       

      now we changed to

       

      <worker name="default" task-max-threads="500" io-threads="16"/>

      <buffer-pool name="default"  direct-buffers="true" buffers-per-slice="128" buffer-size="16384"/>

       

      are there some best practices for these values?

       

      i already found

       

      http://www.mastertheboss.com/jboss-server/jboss-performance/wildfly-performance-tuning

       

      regards

      Sascha