mod_cluster shows heavy load in MCMP requests with many backend JVMs

Solution Verified - Updated -

Issue

  • We run a httpd/mod_cluster balancer with hundreds of JVMs behind it. Even without much client request traffic, we are seeing some considerable CPU load and long running STATUS requests on httpd.

Environment

  • JBoss Core Services (JBCS) httpd 2.4.29
  • mod_cluster
  • JBoss Web Server (JWS) Tomcat
  • JBoss Enterprise Application Platform (EAP)

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