Termination trace (log) could be due to a network connectivity issue between the master and the slaves. I restarted jenkins to resolve this (termination request) issue.
From: Andrew Barber <ajbarbe...@gmail.com<mailto:ajbarbe...@gmail.com>> Reply-To: "jenkinsci-users@googlegroups.com<mailto:jenkinsci-users@googlegroups.com>" <jenkinsci-users@googlegroups.com<mailto:jenkinsci-users@googlegroups.com>> Date: Thursday, March 24, 2016 at 9:04 AM To: Jenkins Users <jenkinsci-users@googlegroups.com<mailto:jenkinsci-users@googlegroups.com>> Subject: Jenkins memory leak Our jenkins server seems to have a slow memory leak (runs out after about 5 days). We noticed this after upgrading from 1.596 to 1.642.1. I already increased memory space for java ( -XX:MaxPermSize=512m -Xmx512m). I have a heap dump and histogram, but I am not sure how to proceed. The histogram starts like this num #instances #bytes class name ---------------------------------------------- 1: 978285 187967360 [C 2: 42467 113726864 [B 3: 1259878 40316096 java.lang.StackTraceElement 4: 968080 23233920 java.lang.String 5: 252385 19069600 [Ljava.lang.Object; 6: 116007 12968192 [I 7: 82985 6636360 [S 8: 204713 6550816 java.util.concurrent.ConcurrentHashMap$Node 9: 91323 5844672 java.net.URL 10: 56639 5683352 [Ljava.lang.StackTraceElement; I don't know what [C or [B is. Perhaps a corruption? Also, what is going on with StackTraceElement? We see a lot of these in our log WARNING: Executor #0 for XXX-build1 : executing XXX-treemake #4203 termination trace hudson.model.Computer$TerminationRequest: Termination requested at Wed Mar 23 15:17:25 PDT 2016 by Thread[jenkins.util.Timer [#2],5,main] [id=27] at hudson.model.Computer.recordTermination(Computer.java:219) at hudson.model.Computer.disconnect(Computer.java:481) at hudson.slaves.SlaveComputer.disconnect(SlaveComputer.java:611) at hudson.slaves.RetentionStrategy$Demand.check(RetentionStrategy.java:270) at hudson.slaves.RetentionStrategy$Demand.check(RetentionStrategy.java:178) at hudson.slaves.ComputerRetentionWork$1.run(ComputerRetentionWork.java:71) at hudson.model.Queue._withLock(Queue.java:1346) at hudson.model.Queue.withLock(Queue.java:1229) at hudson.slaves.ComputerRetentionWork.doRun(ComputerRetentionWork.java:62) at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:50) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) -- 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<mailto:jenkinsci-users+unsubscr...@googlegroups.com>. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/d555b38b-70e4-4f46-b189-08151d280d4b%40googlegroups.com<https://groups.google.com/d/msgid/jenkinsci-users/d555b38b-70e4-4f46-b189-08151d280d4b%40googlegroups.com?utm_medium=email&utm_source=footer>. For more options, visit https://groups.google.com/d/optout. -- 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/D3196D4F.1E588%25ashish.yadav%40firemon.com. For more options, visit https://groups.google.com/d/optout.
