ajp-apr-<port>-Poller thread consumes high cpu in Tomcat 8

Solution Verified - Updated -

Issue

  • I observed JWS 3.0.x Tomcat 8 Java process consumed high cpu. And, when the customer checked the java process with Java Mission Control, it indicates ajp-apr-<port>-Poller thread consumes a lot of cpu time.
  • We restarted our httpd AJP proxy and then saw increased CPU usage in the Tomcat 8 instances behind it.

Environment

  • Red Hat JBoss Web Server (JWS) 3.0.x
  • Tomcat 8

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