All: One one of my Jenkins depoyments I am seeing 1 cpu constantly busy with background thread processing, with roughly this breakdown:
40% LauncherControlThread winstone.Launcher.run(Launcher.java:265) 30% jenkins cron thread 20% WinstoneHostConfigurationMgmt:default winstone.HostConfiguration.run(HostConfiguration.java:174) 10% Smack Keep Alive org.jivesoftware.smack.PacketWriter$KeepAliveTask.run(PacketWriter.java:302) That thread dump was from jconsole, with TopThreads: http://lsd.luminis.eu/new_version_topthreads_jconsole_plugin/ Here's what I have tried so far: - updated to 1.475 - resolved stack traces on startup - verified no memory pressure (note: I increased perm gen) jmap -heap $(jps -l | awk '/jenkins.war/ {print $1}') - disabled unused plugins - disabled unused jobs - looked for apropos bugs - looked for apropos e-mail threads My command line looks like: -Xms256m -Xmx1500m -XX:PermSize=256m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -jar $HOME/bin/jenkins.war --httpPort=-1 --ajp13ListenAddress=127.0.0.1 --httpsPort=8443 --httpsKeyStore=$HOME/jenkins.ks --httpsKeyStorePassword=MyKSpw Any suggestions on further debugging? Thanks, --Tom
