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When debugging a tomcat app in Eclipse it freezes from time to time. Eclipse is "then" absolutely unresponsive. All I sse is the "blue spinner" The tomcat app on the other hand is always responsive. My relatively new notebook is not exhausted when eclipse is frozen. I have a lot of mem. ~4G allocated to eclipse itself. Today I started Java VisualVM and gathered a few (hopefully helpful) main-Thread stack tarces when blocked and not-blocked When not-blocked the stacktrace looks alike: "main" - Thread t@1 java.lang.Thread.State: RUNNABLE at org.eclipse.swt.internal.win32.OS.WaitMessage(Native Method) at org.eclipse.swt.widgets.Display.sleep(Display.java:4589) at org.eclipse.ui.application.WorkbenchAdvisor.eventLoopIdle(WorkbenchAdvisor.java:360) at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.eventLoopIdle(IDEWorkbenchAdvisor.java:949) at org.eclipse.ui.internal.Workbench$1.eventLoopIdle(Workbench.java:481) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1165) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:633) at org.eclipse.ui.internal.Workbench$$Lambda$99/0x000000080030a440.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:660) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597) at org.eclipse.equinox.launcher.Main.run(Main.java:1468) Locked ownable synchronizers: - None When blocked they look somewaht like this: -- 1 -- 2019-10-30 12:22:44 "main" - Thread t@1 java.lang.Thread.State: RUNNABLE at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.cancelElementUpdates(TreeModelLabelProvider.java:371) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.access$0(TreeModelLabelProvider.java:356) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider$CancelPendingUpdatesVisitor.visit(TreeModelLabelProvider.java:117) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:378) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:381) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:381) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:381) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.accept(ModelDelta.java:374) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.modelChanged(TreeModelLabelProvider.java:508) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.doModelChanged(TreeModelContentProvider.java:537) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.access$0(TreeModelContentProvider.java:524) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider$DelayedDoModelChangedJob.runInUIThread(TreeModelContentProvider.java:436) at org.eclipse.ui.progress.UIJob.lambda$0(UIJob.java:95) at org.eclipse.ui.progress.UIJob$$Lambda$509/0x00000008008d5c40.run(Unknown Source) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185) - locked <59fa2d6f> (a org.eclipse.swt.widgets.RunnableLock) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3961) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3588) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:633) at org.eclipse.ui.internal.Workbench$$Lambda$99/0x000000080030a440.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:660) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597) at org.eclipse.equinox.launcher.Main.run(Main.java:1468) Locked ownable synchronizers: - None -- 2 -- 2019-10-30 12:23:02 "main" - Thread t@1 java.lang.Thread.State: RUNNABLE at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.cancelElementUpdates(TreeModelLabelProvider.java:357) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.access$0(TreeModelLabelProvider.java:356) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider$CancelPendingUpdatesVisitor.visit(TreeModelLabelProvider.java:117) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:378) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:381) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:381) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:381) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.accept(ModelDelta.java:374) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.modelChanged(TreeModelLabelProvider.java:508) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.doModelChanged(TreeModelContentProvider.java:537) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.access$0(TreeModelContentProvider.java:524) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider$DelayedDoModelChangedJob.runInUIThread(TreeModelContentProvider.java:436) at org.eclipse.ui.progress.UIJob.lambda$0(UIJob.java:95) at org.eclipse.ui.progress.UIJob$$Lambda$509/0x00000008008d5c40.run(Unknown Source) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185) - locked <59fa2d6f> (a org.eclipse.swt.widgets.RunnableLock) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3961) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3588) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:633) at org.eclipse.ui.internal.Workbench$$Lambda$99/0x000000080030a440.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:660) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597) at org.eclipse.equinox.launcher.Main.run(Main.java:1468) Locked ownable synchronizers: - None -- 3 -- 2019-10-30 12:23:15 "main" - Thread t@1 java.lang.Thread.State: RUNNABLE at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.cancelPathUpdates(TreeModelLabelProvider.java:299) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.update(TreeModelLabelProvider.java:265) at org.eclipse.debug.internal.ui.viewers.model.InternalTreeModelViewer.doUpdateItem(InternalTreeModelViewer.java:1095) at org.eclipse.jface.viewers.AbstractTreeViewer$UpdateItemSafeRunnable.run(AbstractTreeViewer.java:121) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47) at org.eclipse.ui.internal.JFaceUtil$$Lambda$78/0x0000000800257040.run(Unknown Source) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174) at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:1024) at org.eclipse.jface.viewers.StructuredViewer$UpdateItemSafeRunnable.run(StructuredViewer.java:422) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47) at org.eclipse.ui.internal.JFaceUtil$$Lambda$78/0x0000000800257040.run(Unknown Source) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174) at org.eclipse.jface.viewers.StructuredViewer.updateItem(StructuredViewer.java:2097) at org.eclipse.jface.viewers.StructuredViewer.internalUpdate(StructuredViewer.java:2080) at org.eclipse.jface.viewers.StructuredViewer.update(StructuredViewer.java:2021) at org.eclipse.jface.viewers.ColumnViewer.update(ColumnViewer.java:545) at org.eclipse.debug.internal.ui.viewers.model.InternalTreeModelViewer.update(InternalTreeModelViewer.java:1380) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.handleState(TreeModelContentProvider.java:1667) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateNodes(TreeModelContentProvider.java:1278) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateNodes(TreeModelContentProvider.java:1305) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateNodes(TreeModelContentProvider.java:1305) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateNodes(TreeModelContentProvider.java:1305) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.updateModel(TreeModelContentProvider.java:563) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.doModelChanged(TreeModelContentProvider.java:530) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.access$0(TreeModelContentProvider.java:524) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider$DelayedDoModelChangedJob.runInUIThread(TreeModelContentProvider.java:436) at org.eclipse.ui.progress.UIJob.lambda$0(UIJob.java:95) at org.eclipse.ui.progress.UIJob$$Lambda$509/0x00000008008d5c40.run(Unknown Source) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185) - locked <59fa2d6f> (a org.eclipse.swt.widgets.RunnableLock) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3961) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3588) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:633) at org.eclipse.ui.internal.Workbench$$Lambda$99/0x000000080030a440.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:660) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597) at org.eclipse.equinox.launcher.Main.run(Main.java:1468) Locked ownable synchronizers: - None -- 4 -- 2019-10-30 12:23:45 "main" - Thread t@1 java.lang.Thread.State: RUNNABLE at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.cancelElementUpdates(TreeModelLabelProvider.java:357) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.access$0(TreeModelLabelProvider.java:356) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider$CancelPendingUpdatesVisitor.visit(TreeModelLabelProvider.java:117) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:378) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:381) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:381) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.doAccept(ModelDelta.java:381) at org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta.accept(ModelDelta.java:374) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.modelChanged(TreeModelLabelProvider.java:508) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.doModelChanged(TreeModelContentProvider.java:537) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.access$0(TreeModelContentProvider.java:524) at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider$DelayedDoModelChangedJob.runInUIThread(TreeModelContentProvider.java:436) at org.eclipse.ui.progress.UIJob.lambda$0(UIJob.java:95) at org.eclipse.ui.progress.UIJob$$Lambda$509/0x00000008008d5c40.run(Unknown Source) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185) - locked <59fa2d6f> (a org.eclipse.swt.widgets.RunnableLock) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3961) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3588) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:633) at org.eclipse.ui.internal.Workbench$$Lambda$99/0x000000080030a440.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:660) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597) at org.eclipse.equinox.launcher.Main.run(Main.java:1468) Locked ownable synchronizers: - None -- 5 -- 2019-10-30 12:24:34 "main" - Thread t@1 java.lang.Thread.State: RUNNABLE at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.notifyUpdate(TreeModelLabelProvider.java:477) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.updateComplete(TreeModelLabelProvider.java:464) at org.eclipse.debug.internal.ui.viewers.model.LabelUpdate.performUpdate(LabelUpdate.java:142) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider.lambda$0(TreeModelLabelProvider.java:412) at org.eclipse.debug.internal.ui.viewers.model.TreeModelLabelProvider$$Lambda$961/0x0000000801191040.run(Unknown Source) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185) - locked <7e70b603> (a org.eclipse.swt.widgets.RunnableLock) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3961) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3588) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:633) at org.eclipse.ui.internal.Workbench$$Lambda$99/0x000000080030a440.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:660) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597) at org.eclipse.equinox.launcher.Main.run(Main.java:1468) Locked ownable synchronizers: - None What problem am I facing here?
to me it looks like updating the "TreeModel" blocks Eclipse ...
let me know whether and how I can provide more insight into this problem/bug?
(In reply to Clemens Wyss from comment #1) > to me it looks like updating the "TreeModel" blocks Eclipse ... must 'updating the "TreeModel"' run in main-thread?
(In reply to Clemens Wyss from comment #3) > (In reply to Clemens Wyss from comment #1) > > to me it looks like updating the "TreeModel" blocks Eclipse ... > > must 'updating the "TreeModel"' run in main-thread? Sure. Please provide: 1) Exact Eclipse version 2) steps to reproduce 3) *full* thread stack dump created via "jstack -l <eclipse pid>".
Thx for replying > Please provide: > 1) Exact Eclipse version > 2) steps to reproduce > 3) *full* thread stack dump created via "jstack -l <eclipse pid>". 1) Eclipse Platform Version: 2019-09 (4.13) Build id: I20190916-1045 but I am having this problem since months, i.e. this applys to 4.12, 4.11, ... 2) unfortunately not. Only happens when debugging the biggest of my/our webapps. Again: the webapp "per se" is never "frozen". (only) eclipse freezes. Also note: after a while (1 - x minutes) eclipse unfreezes and re-freeze again at some time later ... 3) see attachments
Created attachment 280478 [details] threaddump 1, while "frozen"
Created attachment 280479 [details] threaddump 2, while "frozen"
Created attachment 280480 [details] threaddump 3, while "frozen"
Most likely duplicate of Bug 552328. Try to start your Eclipse with this VM property -Dorg.eclipse.jdt.internal.debug.core.model.ThreadNameChangeListener.disable=true See https://www.eclipse.org/eclipse/news/4.9/jdt.php#disable-thread-name-changes *** This bug has been marked as a duplicate of bug 552328 ***
we indeed do rename threads often ... >-Dorg.eclipse.jdt.internal.debug.core.model.ThreadNameChangeListener.disable=true I'll give it a try!
Bingo! Workaround >-Dorg.eclipse.jdt.internal.debug.core.model.ThreadNameChangeListener.disable=true works! And yes: definitely a duplicate of bug 552328
*** This bug has been marked as a duplicate of bug 552328 ***
