id summary reporter owner description type status priority milestone component version resolution keywords cc 15151 Very slow and high CPU usage after restarting naoliv team "It's not the first time that I see this happening: JOSM tries to detect a valid IPv6 connection, fails and then restarts to use an IPv4 mode only; this is usually fine, except that sometimes JOSM restarts and gets very laggy (even to click on the File menu) + I can see it using 25~47% of CPU time. jstack output: {{{ 2017-08-14 09:14:48 Full thread dump OpenJDK 64-Bit Server VM (25.141-b15 mixed mode): ""Attach Listener"" #50 daemon prio=9 os_prio=0 tid=0x00007f2c90001000 nid=0x37a6 waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE Locked ownable synchronizers: - None ""DestroyJavaVM"" #49 prio=5 os_prio=0 tid=0x00007f2cdc00a000 nid=0x3685 waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE Locked ownable synchronizers: - None ""message-notifier-0"" #48 prio=5 os_prio=0 tid=0x00007f2cdcb0d000 nid=0x3720 waiting on condition [0x00007f2c37efd000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x000000075a849dc0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078) at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093) at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""RemoteControl HTTPS Server"" #45 daemon prio=5 os_prio=0 tid=0x00007f2cdce88800 nid=0x371d runnable [0x00007f2c543ea000] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409) at java.net.ServerSocket.implAccept(ServerSocket.java:545) at sun.security.ssl.SSLServerSocketImpl.accept(SSLServerSocketImpl.java:348) at org.openstreetmap.josm.io.remotecontrol.RemoteControlHttpsServer.run(RemoteControlHttpsServer.java:402) Locked ownable synchronizers: - None ""RemoteControl HTTPS Server"" #43 daemon prio=5 os_prio=0 tid=0x00007f2cdcaf7800 nid=0x371c runnable [0x00007f2c544eb000] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409) at java.net.ServerSocket.implAccept(ServerSocket.java:545) at sun.security.ssl.SSLServerSocketImpl.accept(SSLServerSocketImpl.java:348) at org.openstreetmap.josm.io.remotecontrol.RemoteControlHttpsServer.run(RemoteControlHttpsServer.java:402) Locked ownable synchronizers: - None ""Timer-0"" #44 daemon prio=6 os_prio=0 tid=0x00007f2c60125800 nid=0x371b in Object.wait() [0x00007f2c545ec000] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x000000075a86da58> (a java.util.TaskQueue) at java.util.TimerThread.mainLoop(Timer.java:552) - locked <0x000000075a86da58> (a java.util.TaskQueue) at java.util.TimerThread.run(Timer.java:505) Locked ownable synchronizers: - None ""RemoteControl HTTP Server"" #42 daemon prio=5 os_prio=0 tid=0x00007f2cdcaf1800 nid=0x371a runnable [0x00007f2c546ed000] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409) at java.net.ServerSocket.implAccept(ServerSocket.java:545) at java.net.ServerSocket.accept(ServerSocket.java:513) at org.openstreetmap.josm.io.remotecontrol.RemoteControlHttpServer.run(RemoteControlHttpServer.java:103) Locked ownable synchronizers: - None ""RemoteControl HTTP Server"" #41 daemon prio=5 os_prio=0 tid=0x00007f2cdcaf0800 nid=0x3719 runnable [0x00007f2c550ef000] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409) at java.net.ServerSocket.implAccept(ServerSocket.java:545) at java.net.ServerSocket.accept(ServerSocket.java:513) at org.openstreetmap.josm.io.remotecontrol.RemoteControlHttpServer.run(RemoteControlHttpServer.java:103) Locked ownable synchronizers: - None ""pool-1-thread-1"" #38 prio=5 os_prio=0 tid=0x00007f2c3c004800 nid=0x36f8 waiting on condition [0x00007f2c54fee000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x0000000605684580> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""WeakCollectionCleaner"" #36 daemon prio=8 os_prio=0 tid=0x00007f2cdcca1000 nid=0x36f6 in Object.wait() [0x00007f2ca41d3000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x00000006036f00b0> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) - locked <0x00000006036f00b0> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164) at org.geotools.util.WeakCollectionCleaner.run(WeakCollectionCleaner.java:77) Locked ownable synchronizers: - None ""GT authority factory disposer"" #35 daemon prio=5 os_prio=0 tid=0x00007f2cdca83000 nid=0x36f2 in Object.wait() [0x00007f2c577fc000] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x0000000604a39718> (a java.util.TaskQueue) at java.util.TimerThread.mainLoop(Timer.java:552) - locked <0x0000000604a39718> (a java.util.TaskQueue) at java.util.TimerThread.run(Timer.java:505) Locked ownable synchronizers: - None ""JCS-ElementEventQueue-Thread-5"" #32 daemon prio=5 os_prio=0 tid=0x00007f2c4815f000 nid=0x36df waiting on condition [0x00007f2c57efd000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x0000000604c11a48> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""image-fetcher-0"" #30 prio=5 os_prio=0 tid=0x00007f2c5c08a000 nid=0x36d1 waiting on condition [0x00007f2c576fb000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x0000000600782b20> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""Weak reference cleaner"" #22 prio=5 os_prio=0 tid=0x00007f2cdc7ac000 nid=0x36c7 in Object.wait() [0x00007f2ca5806000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x0000000601c57ef8> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) - locked <0x0000000601c57ef8> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164) at org.openstreetmap.josm.tools.ListenableWeakReference.clean(ListenableWeakReference.java:61) at org.openstreetmap.josm.tools.ListenableWeakReference$$Lambda$77/1030684756.run(Unknown Source) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""File Watcher"" #11 prio=5 os_prio=0 tid=0x00007f2cdc707800 nid=0x36c6 waiting on condition [0x00007f2ca5dfe000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x0000000600e95cd0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingDeque.takeFirst(LinkedBlockingDeque.java:492) at java.util.concurrent.LinkedBlockingDeque.take(LinkedBlockingDeque.java:680) at sun.nio.fs.AbstractWatchService.take(AbstractWatchService.java:118) at org.openstreetmap.josm.io.FileWatcher.processEvents(FileWatcher.java:114) at org.openstreetmap.josm.io.FileWatcher$$Lambda$4/1147985808.run(Unknown Source) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""TimerQueue"" #21 daemon prio=5 os_prio=0 tid=0x00007f2c60079800 nid=0x36c5 waiting on condition [0x00007f2cb9160000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000006013c88b0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.DelayQueue.take(DelayQueue.java:211) at javax.swing.TimerQueue.run(TimerQueue.java:174) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - <0x00000006013c88e8> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) ""AWT-EventQueue-0"" #18 prio=6 os_prio=0 tid=0x00007f2cdc669800 nid=0x369e waiting on condition [0x00007f2ca4be0000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000006006cff88> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.awt.EventQueue.getNextEvent(EventQueue.java:554) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:170) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82) Locked ownable synchronizers: - None ""AWT-Shutdown"" #19 prio=5 os_prio=0 tid=0x00007f2cdc668000 nid=0x369d in Object.wait() [0x00007f2ca4ce1000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x00000006007fdfc8> (a java.lang.Object) at java.lang.Object.wait(Object.java:502) at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:295) - locked <0x00000006007fdfc8> (a java.lang.Object) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""AWT-XAWT"" #17 daemon prio=6 os_prio=0 tid=0x00007f2cdc6a7000 nid=0x369c runnable [0x00007f2ca4fe2000] java.lang.Thread.State: RUNNABLE at sun.awt.X11.XToolkit.waitForEvents(Native Method) at sun.awt.X11.XToolkit.run(XToolkit.java:568) at sun.awt.X11.XToolkit.run(XToolkit.java:532) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""Java2D Disposer"" #14 daemon prio=10 os_prio=0 tid=0x00007f2cdc606000 nid=0x369b in Object.wait() [0x00007f2cb8308000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x00000006007fe480> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) - locked <0x00000006007fe480> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164) at sun.java2d.Disposer.run(Disposer.java:148) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""Thread-1"" #10 daemon prio=5 os_prio=0 tid=0x00007f2cdc4e0000 nid=0x3693 runnable [0x00007f2cbadac000] java.lang.Thread.State: RUNNABLE at sun.nio.fs.LinuxWatchService.poll(Native Method) at sun.nio.fs.LinuxWatchService.access$600(LinuxWatchService.java:47) at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:314) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None ""Service Thread"" #8 daemon prio=9 os_prio=0 tid=0x00007f2cdc2a4800 nid=0x3691 runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE Locked ownable synchronizers: - None ""C1 CompilerThread2"" #7 daemon prio=9 os_prio=0 tid=0x00007f2cdc29f800 nid=0x3690 waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE Locked ownable synchronizers: - None ""C2 CompilerThread1"" #6 daemon prio=9 os_prio=0 tid=0x00007f2cdc29d800 nid=0x368f waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE Locked ownable synchronizers: - None ""C2 CompilerThread0"" #5 daemon prio=9 os_prio=0 tid=0x00007f2cdc29a800 nid=0x368e waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE Locked ownable synchronizers: - None ""Signal Dispatcher"" #4 daemon prio=9 os_prio=0 tid=0x00007f2cdc299800 nid=0x368d runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE Locked ownable synchronizers: - None ""Finalizer"" #3 daemon prio=8 os_prio=0 tid=0x00007f2cdc267000 nid=0x368c in Object.wait() [0x00007f2cbbdfc000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x00000006007ffb08> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) - locked <0x00000006007ffb08> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164) at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209) Locked ownable synchronizers: - None ""Reference Handler"" #2 daemon prio=10 os_prio=0 tid=0x00007f2cdc262800 nid=0x368b in Object.wait() [0x00007f2cbbefd000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x00000006007ffd38> (a java.lang.ref.Reference$Lock) at java.lang.Object.wait(Object.java:502) at java.lang.ref.Reference.tryHandlePending(Reference.java:191) - locked <0x00000006007ffd38> (a java.lang.ref.Reference$Lock) at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153) Locked ownable synchronizers: - None ""VM Thread"" os_prio=0 tid=0x00007f2cdc25a800 nid=0x368a runnable ""GC task thread#0 (ParallelGC)"" os_prio=0 tid=0x00007f2cdc01f000 nid=0x3686 runnable ""GC task thread#1 (ParallelGC)"" os_prio=0 tid=0x00007f2cdc021000 nid=0x3687 runnable ""GC task thread#2 (ParallelGC)"" os_prio=0 tid=0x00007f2cdc022800 nid=0x3688 runnable ""GC task thread#3 (ParallelGC)"" os_prio=0 tid=0x00007f2cdc024800 nid=0x3689 runnable ""VM Periodic Task Thread"" os_prio=0 tid=0x00007f2cdc2a7000 nid=0x3692 waiting on condition JNI global references: 7408 }}} With visualvm's CPU profiling I can't see anything. How can I help in debugging this, please? JOSM: {{{ URL:http://josm.openstreetmap.de/svn/trunk Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b Last:Changed Date: 2017-08-13 19:54:54 +0200 (Sun, 13 Aug 2017) Build-Date:2017-08-14 01:35:37 Revision:12598 Relative:URL: ^/trunk Identification: JOSM/1.5 (12598 pt_BR) Linux Debian GNU/Linux testing (buster) Memory Usage: 917 MB / 6372 MB (532 MB allocated, but free) Java version: 1.8.0_141-8u141-b15-3-b15, Oracle Corporation, OpenJDK 64-Bit Server VM Screen: :0.0 1600x900, :0.1 1280x1024 Maximum Screen Size: 1600x1024 Java package: openjdk-8-jre:amd64-8u141-b15-3 Java ATK Wrapper package: libatk-wrapper-java:all-0.33.3-13 VM arguments: [-Dawt.useSystemAAFontSettings=on] Plugins: + Create_grid_of_ways (32699) + FastDraw (33182) + ImportImagePlugin (33372) + OpeningHoursEditor (33185) + PicLayer (33385) + RoadSigns (33204) + SimplifyArea (33004) + apache-commons (32994) + buildings_tools (33004) + conflation (0.5.4) + contourmerge (1030) + download_along (32946) + editgpx (33004) + ejml (32680) + geojson (52) + geotools (33380) + importvec (33088) + indoorhelper (33088) + jts (32699) + log4j (32699) + measurement (33088) + merge-overlap (33436) + opendata (33438) + pbf (33241) + pdfimport (33004) + poly (33004) + reverter (33088) + scripting (30768) + tageditor (33021) + todo (30200) + turnlanes (33294) + turnlanes-tagging (254) + turnrestrictions (33088) + undelete (33480) + utilsplugin2 (33328) }}}" defect closed normal Core fixed ipv6 restart performance