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During project import of several hundreds projects I had a multi minute UI freeze. Main thread trace below: "main" #1 prio=6 os_prio=0 tid=0x00007fcb1800b000 nid=0x6dfe waiting for monitor entry [0x00007fcb1fc2c000] java.lang.Thread.State: BLOCKED (on object monitor) at org.eclipse.core.internal.jobs.JobManager.schedule(JobManager.java:1247) - waiting to lock <0x00000000802e2a18> (a java.lang.Object) at org.eclipse.core.internal.jobs.InternalJob.schedule(InternalJob.java:385) at org.eclipse.core.runtime.jobs.Job.schedule(Job.java:670) at org.eclipse.ui.internal.decorators.DecorationScheduler.queueForDecoration(DecorationScheduler.java:216) - locked <0x0000000082fcec90> (a org.eclipse.ui.internal.decorators.DecorationScheduler) at org.eclipse.ui.internal.decorators.DecoratorManager.prepareDecoration(DecoratorManager.java:982) at org.eclipse.ui.internal.decorators.DecoratorManager$ManagedWorkbenchLabelDecorator.prepareDecoration(DecoratorManager.java:155) at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.waitForPendingDecoration(DecoratingStyledCellLabelProvider.java:117) at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.update(DecoratingStyledCellLabelProvider.java:131) at org.eclipse.jface.viewers.ViewerColumn.refresh(ViewerColumn.java:144) at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:954) at org.eclipse.jface.viewers.AbstractTreeViewer$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$$Lambda$15/2090894907.run(Unknown Source) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174) at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:1032) at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1923) at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1937) at org.eclipse.jface.viewers.AbstractTreeViewer.labelProviderChanged(AbstractTreeViewer.java:2206) at org.eclipse.jface.viewers.ContentViewer.handleLabelProviderChanged(ContentViewer.java:199) at org.eclipse.jface.viewers.StructuredViewer.handleLabelProviderChanged(StructuredViewer.java:1157) at org.eclipse.jdt.internal.ui.viewsupport.ProblemTreeViewer.handleLabelProviderChanged(ProblemTreeViewer.java:206) at org.eclipse.jface.viewers.ContentViewer$1.labelProviderChanged(ContentViewer.java:95) at org.eclipse.jface.viewers.BaseLabelProvider$1.run(BaseLabelProvider.java:75) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47) at org.eclipse.ui.internal.JFaceUtil$$Lambda$15/2090894907.run(Unknown Source) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174) at org.eclipse.jface.viewers.BaseLabelProvider.fireLabelProviderChanged(BaseLabelProvider.java:72) at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.lambda$0(DecoratingStyledCellLabelProvider.java:78) at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider$$Lambda$356/31312124.labelProviderChanged(Unknown Source) at org.eclipse.ui.internal.decorators.DecoratorManager$2.run(DecoratorManager.java:365) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.decorators.DecoratorManager.fireListeners(DecoratorManager.java:362) at org.eclipse.ui.internal.decorators.DecoratorManager.labelProviderChanged(DecoratorManager.java:673) at org.eclipse.jface.viewers.BaseLabelProvider$1.run(BaseLabelProvider.java:75) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47) at org.eclipse.ui.internal.JFaceUtil$$Lambda$15/2090894907.run(Unknown Source) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174) at org.eclipse.jface.viewers.BaseLabelProvider.fireLabelProviderChanged(BaseLabelProvider.java:72) at org.eclipse.egit.ui.internal.decorators.GitDecorator.lambda$0(GitDecorator.java:90) at org.eclipse.egit.ui.internal.decorators.GitDecorator$$Lambda$693/993656936.run(Unknown Source) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185) - locked <0x00000000d63880f8> (a org.eclipse.swt.widgets.RunnableLock) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4930) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4451) at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.runEventLoop(EventLoopProgressMonitor.java:127) at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.isCanceled(EventLoopProgressMonitor.java:101) at org.eclipse.core.runtime.SubMonitor$RootInfo.isCanceled(SubMonitor.java:234) at org.eclipse.core.runtime.SubMonitor.isCanceled(SubMonitor.java:581) at org.eclipse.core.internal.jobs.ThreadJob.isCanceled(ThreadJob.java:147) at org.eclipse.core.internal.jobs.ThreadJob.waitForRun(ThreadJob.java:276) at org.eclipse.core.internal.jobs.ThreadJob.joinRun(ThreadJob.java:205) at org.eclipse.core.internal.jobs.ImplicitJobs.begin(ImplicitJobs.java:95) at org.eclipse.core.internal.jobs.JobManager.beginRule(JobManager.java:298) at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:124) at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:2242) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2287) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2317) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:131) - locked <0x00000000f40840f8> (a org.eclipse.ui.actions.WorkspaceModifyDelegatingOperation) at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:76) at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:66) at org.eclipse.ui.editors.text.TextFileDocumentProvider.executeOperation(TextFileDocumentProvider.java:461) at org.eclipse.ui.editors.text.TextFileDocumentProvider.validateState(TextFileDocumentProvider.java:1037) at org.eclipse.ui.editors.text.ForwardingDocumentProvider.validateState(ForwardingDocumentProvider.java:216) at org.eclipse.ui.texteditor.AbstractTextEditor.validateState(AbstractTextEditor.java:4951) at org.eclipse.ui.texteditor.AbstractTextEditor.lambda$4(AbstractTextEditor.java:4994) at org.eclipse.ui.texteditor.AbstractTextEditor$$Lambda$1072/1851143998.run(Unknown Source) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:72) at org.eclipse.ui.texteditor.AbstractTextEditor.validateEditorInputState(AbstractTextEditor.java:4994) at org.eclipse.ui.texteditor.StatusTextEditor.validateEditorInputState(StatusTextEditor.java:157) at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.validateEditorInputState(AbstractDecoratedTextEditor.java:1054) at org.eclipse.ui.texteditor.AbstractTextEditor$ElementStateListener$Validator.verifyText(AbstractTextEditor.java:386) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:277) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5687) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1423) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1449) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1432) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1221) at org.eclipse.swt.custom.StyledText.modifyContent(StyledText.java:7400) at org.eclipse.swt.custom.StyledText.sendKeyEvent(StyledText.java:8306) at org.eclipse.swt.custom.StyledText.doBackspace(StyledText.java:2315) at org.eclipse.swt.custom.StyledText.invokeAction(StyledText.java:7221) at org.eclipse.swt.custom.StyledText.handleKey(StyledText.java:6077) at org.eclipse.swt.custom.StyledText.handleKeyDown(StyledText.java:6104) at org.eclipse.swt.custom.StyledText.lambda$1(StyledText.java:5793) at org.eclipse.swt.custom.StyledText$$Lambda$837/414940874.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5687) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1423) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1449) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1432) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1473) at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:837) at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:3942) at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:855) at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2267) at org.eclipse.swt.widgets.Control.windowProc(Control.java:6679) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5928) at org.eclipse.swt.internal.gtk.GTK.gtk_main_do_event(Native Method) at org.eclipse.swt.widgets.Display.eventProc(Display.java:1486) at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(Native Method) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4446) at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.runEventLoop(EventLoopProgressMonitor.java:127) at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.isCanceled(EventLoopProgressMonitor.java:101) at org.eclipse.core.runtime.SubMonitor$RootInfo.isCanceled(SubMonitor.java:234) at org.eclipse.core.runtime.SubMonitor.isCanceled(SubMonitor.java:581) at org.eclipse.core.internal.jobs.ThreadJob.isCanceled(ThreadJob.java:147) at org.eclipse.core.internal.jobs.ThreadJob.joinRun(ThreadJob.java:194) at org.eclipse.core.internal.jobs.ImplicitJobs.begin(ImplicitJobs.java:95) at org.eclipse.core.internal.jobs.JobManager.beginRule(JobManager.java:298) at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:124) at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:2242) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2287) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2317) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:131) - locked <0x00000000f41175e8> (a org.eclipse.ui.actions.WorkspaceModifyDelegatingOperation) at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:76) at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:66) at org.eclipse.ui.editors.text.TextFileDocumentProvider.executeOperation(TextFileDocumentProvider.java:461) at org.eclipse.ui.editors.text.TextFileDocumentProvider.validateState(TextFileDocumentProvider.java:1037) at org.eclipse.ui.editors.text.ForwardingDocumentProvider.validateState(ForwardingDocumentProvider.java:216) at org.eclipse.ui.texteditor.AbstractTextEditor.validateState(AbstractTextEditor.java:4951) at org.eclipse.ui.texteditor.AbstractTextEditor.lambda$4(AbstractTextEditor.java:4994) at org.eclipse.ui.texteditor.AbstractTextEditor$$Lambda$1072/1851143998.run(Unknown Source) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:72) at org.eclipse.ui.texteditor.AbstractTextEditor.validateEditorInputState(AbstractTextEditor.java:4994) at org.eclipse.ui.texteditor.StatusTextEditor.validateEditorInputState(StatusTextEditor.java:157) at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.validateEditorInputState(AbstractDecoratedTextEditor.java:1054) at org.eclipse.ui.texteditor.AbstractTextEditor$ElementStateListener$Validator.verifyText(AbstractTextEditor.java:386) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:277) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5687) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1423) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1449) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1432) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1221) at org.eclipse.swt.custom.StyledText.modifyContent(StyledText.java:7400) at org.eclipse.swt.custom.StyledText.sendKeyEvent(StyledText.java:8306) at org.eclipse.swt.custom.StyledText.doBackspace(StyledText.java:2291) at org.eclipse.swt.custom.StyledText.invokeAction(StyledText.java:7221) at org.eclipse.swt.custom.StyledText.handleKey(StyledText.java:6077) at org.eclipse.swt.custom.StyledText.handleKeyDown(StyledText.java:6104) at org.eclipse.swt.custom.StyledText.lambda$1(StyledText.java:5793) at org.eclipse.swt.custom.StyledText$$Lambda$837/414940874.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5687) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1423) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1449) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1432) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1473) at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:837) at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:3942) at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:855) at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2267) at org.eclipse.swt.widgets.Control.windowProc(Control.java:6679) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5928) at org.eclipse.swt.internal.gtk.GTK.gtk_main_do_event(Native Method) at org.eclipse.swt.widgets.Display.eventProc(Display.java:1486) at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(Native Method) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4446) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:658) at org.eclipse.ui.internal.Workbench$$Lambda$33/1501716646.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:154) 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:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1447) at org.eclipse.equinox.launcher.Main.main(Main.java:1420)
Created attachment 281715 [details] jstack output
