Hi, I'm not really familiar how this works internally, but looking at thread dump in Jenkins I can not interpret this in any other way than the ping thread is terribly slowing down Jenkins by causing other threads to wait for it:
Short background: Jenkins 1580.3, running on x64 RHEL with 4 cores and 24 G RAM. Not the only instance on master host, other seem to be feeling better, I suspect this pinging thread to be the cause of long time page loading. Not listing any further info not to overload someone who's reading this with useless information.. At the moment. Ping thread for channel hudson.remoting.Channel@32a6cf5b:<host> "Ping thread for channel hudson.remoting.Channel@32a6cf5b:<host>" Id=108 Group=main TIMED_WAITING at java.lang.Thread.sleep(Native Method) at hudson.remoting.PingThread.run(PingThread.java:91) The rest of thread dump (specifically jobs) looks more or less like this: Executor #6 for <host> : executing <job> #<build_number> / waiting for hudson.remoting.Channel@32a6cf5b:<host> "Executor #6 for eselivm2v759l : executing mct_up_check #2004 / waiting for hudson.remoting.Channel@32a6cf5b:<host>" Id=625627 Group=main TIMED_WAITING on hudson.remoting.UserRequest@7654c0aa at java.lang.Object.wait(Native Method) - waiting on hudson.remoting.UserRequest@7654c0aa at hudson.remoting.Request.call(Request.java:146) at hudson.remoting.Channel.call(Channel.java:751) at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:173) at com.sun.proxy.$Proxy56.join(Unknown Source) at hudson.Launcher$RemoteLauncher$ProcImpl.join(Launcher.java:979) at hudson.tasks.CommandInterpreter.join(CommandInterpreter.java:137) at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:97) at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:66) at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20) at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:770) at hudson.model.Build$BuildExecution.build(Build.java:199) at hudson.model.Build$BuildExecution.doRun(Build.java:160) at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:533) at hudson.model.Run.execute(Run.java:1745) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43) at hudson.model.ResourceController.execute(ResourceController.java:89) at hudson.model.Executor.run(Executor.java:240) Can someone please confirm that my logic here is right/wrong? Also, how can I disable the ping thread? I know that adding -Dhudson.remoting.Launcher.pingIntervalSec=-1 to slave call and a similar option to master start up can stop the thread from pinging, but will it be turned off then? Any help on this would be very much appreciated as I am stumbling on this issue not for the first time and hitting a wall as well again. Thank you and Best Regards, Jan -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/6e903f57-bfb0-4e3a-a74b-1d3dcf18d254%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
