Thank you for submitting the stack trace (I remember seeing this on Stack Overflow).

It is definitely not normal (seeing your memory and heap status in the SOF question, we can dismiss GC). The stack trace looks like the editor is hanging waiting for the typechecker to finish during a save action. First thing that's wrong: save shouldn't wait for the typechecker (are you using any Save Actions in the Java editor?). Second, the typechecker shouldn't be so slow (could be a problematic code snippet involving existential types/implicits). Are you using Scala 2.10 or 2.11?

If you notice other instances (I'm especially interested in pauses while typing), please add them to this ticket.

Related stackoverflow question: http://stackoverflow.com/questions/23381881/how-to-speed-up-scala-ide

I'm using Scala 2.10 and Save Actions checkbox is unchecked. Problematic code uses no existential types, but fair amount of implicit conversions/arguments are involved (code is using Slick).
I can't reproduce hang while typing at the moment (experienced that on a different PC which I can't access now, seems to be not reproducible under out-of-the-box Scala IDE 3.0.3), but I'll post a stack trace as soon as I encounter it.

10 sec hang happened after pressing ENTER on a desired context assist item in list:

================================================================================
[Âò ìàé 27 15:18:09 UZT 2014] UI Thread blocked for 10 672 milliseconds. Thread dump follows.
================================================================================
"main" Id=1 TIMED_WAITING on scala.tools.nsc.interactive.Response@737f49eb
	at java.lang.Object.wait(Native Method)
	-  waiting on scala.tools.nsc.interactive.Response@737f49eb
	at scala.tools.nsc.interactive.Response.get(Response.scala:74)
	at scala.tools.eclipse.ScalaPresentationCompiler.askOption(ScalaPresentationCompiler.scala:146)
	at scala.tools.eclipse.ScalaPresentationCompiler.askOption(ScalaPresentationCompiler.scala:137)
	at scala.tools.eclipse.javaelements.ScalaJavaMapper$class.matchesMethod$1(ScalaJavaMapper.scala:45)
	at scala.tools.eclipse.javaelements.ScalaJavaMapper$$anonfun$getJavaElement$3.apply(ScalaJavaMapper.scala:68)
	at scala.tools.eclipse.javaelements.ScalaJavaMapper$$anonfun$getJavaElement$3.apply(ScalaJavaMapper.scala:68)
	at scala.collection.IndexedSeqOptimized$$anonfun$1.apply(IndexedSeqOptimized.scala:44)
	at scala.collection.IndexedSeqOptimized$$anonfun$1.apply(IndexedSeqOptimized.scala:44)
	at scala.collection.IndexedSeqOptimized$class.segmentLength(IndexedSeqOptimized.scala:189)
	at scala.collection.mutable.ArrayOps$ofRef.segmentLength(ArrayOps.scala:108)
	at scala.collection.GenSeqLike$class.prefixLength(GenSeqLike.scala:92)
	at scala.collection.mutable.ArrayOps$ofRef.prefixLength(ArrayOps.scala:108)
	at scala.collection.IndexedSeqOptimized$class.find(IndexedSeqOptimized.scala:44)
	at scala.collection.mutable.ArrayOps$ofRef.find(ArrayOps.scala:108)
	at scala.tools.eclipse.javaelements.ScalaJavaMapper$class.getJavaElement(ScalaJavaMapper.scala:68)
	at scala.tools.eclipse.ScalaPresentationCompiler.getJavaElement(ScalaPresentationCompiler.scala:36)
	at scala.tools.eclipse.ScalaPresentationCompiler$$anonfun$8.apply(ScalaPresentationCompiler.scala:316)
	at scala.tools.eclipse.ScalaPresentationCompiler$$anonfun$8.apply(ScalaPresentationCompiler.scala:314)
	at scala.tools.eclipse.ui.ScalaCompletionProposal.explicitParamNames$lzycompute(ScalaCompletionProposal.scala:63)
	-  locked scala.tools.eclipse.ui.ScalaCompletionProposal@7be8cfe7
	at scala.tools.eclipse.ui.ScalaCompletionProposal.explicitParamNames(ScalaCompletionProposal.scala:63)
	at scala.tools.eclipse.ui.ScalaCompletionProposal.scala$tools$eclipse$ui$ScalaCompletionProposal$$completionString$lzycompute(ScalaCompletionProposal.scala:73)
	-  locked scala.tools.eclipse.ui.ScalaCompletionProposal@7be8cfe7
	at scala.tools.eclipse.ui.ScalaCompletionProposal.scala$tools$eclipse$ui$ScalaCompletionProposal$$completionString(ScalaCompletionProposal.scala:72)
	at scala.tools.eclipse.ui.ScalaCompletionProposal$$anonfun$apply$1$$anonfun$1.apply(ScalaCompletionProposal.scala:119)
	at scala.tools.eclipse.ui.ScalaCompletionProposal$$anonfun$apply$1$$anonfun$1.apply(ScalaCompletionProposal.scala:118)
	at scala.tools.eclipse.ScalaPresentationCompiler.withSourceFile(ScalaPresentationCompiler.scala:108)
	at scala.tools.eclipse.ScalaProject$$anonfun$withSourceFile$1.apply(ScalaProject.scala:602)
	at scala.tools.eclipse.ScalaProject$$anonfun$withSourceFile$1.apply(ScalaProject.scala:601)
	at scala.tools.eclipse.ScalaProject$$anonfun$withPresentationCompiler$1.apply(ScalaProject.scala:595)
	at scala.tools.eclipse.ScalaProject$$anonfun$withPresentationCompiler$1.apply(ScalaProject.scala:594)
	at scala.tools.eclipse.util.Cached$class.apply(Cached.scala:41)
	at scala.tools.eclipse.ScalaProject$$anon$1.apply(ScalaProject.scala:95)
	at scala.tools.eclipse.ScalaProject.withPresentationCompiler(ScalaProject.scala:594)
	at scala.tools.eclipse.ScalaProject.withSourceFile(ScalaProject.scala:603)
	at scala.tools.eclipse.InteractiveCompilationUnit$class.withSourceFile(InteractiveCompilationUnit.scala:66)
	at scala.tools.eclipse.javaelements.ScalaSourceFile.withSourceFile(ScalaSourceFile.scala:69)
	at scala.tools.eclipse.ui.ScalaCompletionProposal$$anonfun$apply$1.apply(ScalaCompletionProposal.scala:120)
	at scala.tools.eclipse.ui.ScalaCompletionProposal$$anonfun$apply$1.apply(ScalaCompletionProposal.scala:116)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withScalaFileAndSelection$1$$anonfun$apply$4$$anonfun$apply$5.apply(EditorHelpers.scala:77)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withScalaFileAndSelection$1$$anonfun$apply$4$$anonfun$apply$5.apply(EditorHelpers.scala:76)
	at scala.Option.flatMap(Option.scala:170)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withScalaFileAndSelection$1$$anonfun$apply$4.apply(EditorHelpers.scala:76)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withScalaFileAndSelection$1$$anonfun$apply$4.apply(EditorHelpers.scala:75)
	at scala.Option.flatMap(Option.scala:170)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withScalaFileAndSelection$1.apply(EditorHelpers.scala:75)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withScalaFileAndSelection$1.apply(EditorHelpers.scala:74)
	at scala.Option.flatMap(Option.scala:170)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withCurrentEditor$1$$anonfun$apply$1$$anonfun$apply$2.apply(EditorHelpers.scala:59)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withCurrentEditor$1$$anonfun$apply$1$$anonfun$apply$2.apply(EditorHelpers.scala:59)
	at scala.Option.flatMap(Option.scala:170)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withCurrentEditor$1$$anonfun$apply$1.apply(EditorHelpers.scala:58)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withCurrentEditor$1$$anonfun$apply$1.apply(EditorHelpers.scala:58)
	at scala.Option.flatMap(Option.scala:170)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withCurrentEditor$1.apply(EditorHelpers.scala:57)
	at scala.tools.eclipse.refactoring.EditorHelpers$$anonfun$withCurrentEditor$1.apply(EditorHelpers.scala:57)
	at scala.Option.flatMap(Option.scala:170)
	at scala.tools.eclipse.refactoring.EditorHelpers$.withCurrentEditor(EditorHelpers.scala:56)
	at scala.tools.eclipse.refactoring.EditorHelpers$.withScalaFileAndSelection(EditorHelpers.scala:74)
	at scala.tools.eclipse.ui.ScalaCompletionProposal.apply(ScalaCompletionProposal.scala:116)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertProposal(CompletionProposalPopup.java:943)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertSelectedProposalWithMask(CompletionProposalPopup.java:891)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.verifyKey(CompletionProposalPopup.java:1323)
	at org.eclipse.jface.text.contentassist.ContentAssistant$InternalListener.verifyKey(ContentAssistant.java:808)
	at org.eclipse.jface.text.TextViewer$VerifyKeyListenersManager.verifyKey(TextViewer.java:491)
	at org.eclipse.swt.custom.StyledTextListener.handleEvent(StyledTextListener.java:65)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1081)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
	at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:778)
	at org.eclipse.swt.custom.StyledText.handleKeyDown(StyledText.java:5954)
	at org.eclipse.swt.custom.StyledText$7.handleEvent(StyledText.java:5636)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1081)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1108)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1104)
	at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1525)
	at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:4723)
	at org.eclipse.swt.widgets.Canvas.WM_CHAR(Canvas.java:344)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4611)
	at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:340)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4977)
	at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2549)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:140)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:611)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1426)


"Worker-29" Id=688 TIMED_WAITING on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at org.eclipse.core.internal.jobs.WorkerPool.sleep(WorkerPool.java:188)
	at org.eclipse.core.internal.jobs.WorkerPool.startJob(WorkerPool.java:220)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:50)


"ForkJoinPool-1-worker-13" Id=683 WAITING on scala.concurrent.forkjoin.ForkJoinPool@58c70be9
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on scala.concurrent.forkjoin.ForkJoinPool@58c70be9
	at scala.concurrent.forkjoin.ForkJoinPool.scan(ForkJoinPool.java:2075)
	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)


"org.eclipse.jdt.internal.ui.text.JavaReconciler" Id=644 WAITING on scala.tools.nsc.interactive.Response@2177a439
	at java.lang.Object.wait(Native Method)
	-  waiting on scala.tools.nsc.interactive.Response@2177a439
	at java.lang.Object.wait(Object.java:503)
	at scala.tools.nsc.interactive.Response.get(Response.scala:56)
	at scala.tools.eclipse.ScalaPresentationCompiler.withStructure(ScalaPresentationCompiler.scala:133)
	at scala.tools.eclipse.javaelements.ScalaCompilationUnit$$anonfun$buildStructure$2.apply(ScalaCompilationUnit.scala:87)
	at scala.tools.eclipse.javaelements.ScalaCompilationUnit$$anonfun$buildStructure$2.apply(ScalaCompilationUnit.scala:79)
	at scala.tools.eclipse.ScalaPresentationCompiler.withSourceFile(ScalaPresentationCompiler.scala:108)
	at scala.tools.eclipse.ScalaProject$$anonfun$withSourceFile$1.apply(ScalaProject.scala:602)
	at scala.tools.eclipse.ScalaProject$$anonfun$withSourceFile$1.apply(ScalaProject.scala:601)
	at scala.tools.eclipse.ScalaProject$$anonfun$withPresentationCompiler$1.apply(ScalaProject.scala:595)
	at scala.tools.eclipse.ScalaProject$$anonfun$withPresentationCompiler$1.apply(ScalaProject.scala:594)
	at scala.tools.eclipse.util.Cached$class.apply(Cached.scala:41)
	at scala.tools.eclipse.ScalaProject$$anon$1.apply(ScalaProject.scala:95)
	at scala.tools.eclipse.ScalaProject.withPresentationCompiler(ScalaProject.scala:594)
	at scala.tools.eclipse.ScalaProject.withSourceFile(ScalaProject.scala:603)
	at scala.tools.eclipse.InteractiveCompilationUnit$class.withSourceFile(InteractiveCompilationUnit.scala:66)
	at scala.tools.eclipse.javaelements.ScalaSourceFile.withSourceFile(ScalaSourceFile.scala:69)
	at scala.tools.eclipse.javaelements.ScalaCompilationUnit$class.buildStructure(ScalaCompilationUnit.scala:110)
	at scala.tools.eclipse.javaelements.ScalaSourceFile.buildStructure(ScalaSourceFile.scala:69)
	at org.eclipse.jdt.internal.core.Openable.generateInfos(Openable.java:258)
	at org.eclipse.jdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:521)
	at scala.tools.eclipse.javaelements.ScalaSourceFile.makeConsistent(ScalaSourceFile.scala:114)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.makeConsistent(ReconcileWorkingCopyOperation.java:170)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.executeOperation(ReconcileWorkingCopyOperation.java:89)
	at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:728)
	at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:788)
	at org.eclipse.jdt.internal.core.CompilationUnit.reconcile(CompilationUnit.java:1247)
	at scala.tools.eclipse.javaelements.ScalaSourceFile.reconcile(ScalaSourceFile.scala:102)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:126)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.access$0(JavaReconcilingStrategy.java:108)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy$1.run(JavaReconcilingStrategy.java:89)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:87)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:151)
	at org.eclipse.jdt.internal.ui.text.CompositeReconcilingStrategy.reconcile(CompositeReconcilingStrategy.java:86)
	at org.eclipse.jdt.internal.ui.text.JavaCompositeReconcilingStrategy.reconcile(JavaCompositeReconcilingStrategy.java:104)
	at org.eclipse.jface.text.reconciler.MonoReconciler.process(MonoReconciler.java:77)
	at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:206)


"Worker-27" Id=643 TIMED_WAITING on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at org.eclipse.core.internal.jobs.WorkerPool.sleep(WorkerPool.java:188)
	at org.eclipse.core.internal.jobs.WorkerPool.startJob(WorkerPool.java:220)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:50)


"Worker-26" Id=638 TIMED_WAITING on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at org.eclipse.core.internal.jobs.WorkerPool.sleep(WorkerPool.java:188)
	at org.eclipse.core.internal.jobs.WorkerPool.startJob(WorkerPool.java:220)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:50)


"org.eclipse.jdt.internal.ui.text.JavaReconciler" Id=635 TIMED_WAITING on org.eclipse.jface.text.reconciler.DirtyRegionQueue@76b74247
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.jface.text.reconciler.DirtyRegionQueue@76b74247
	at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:179)


"Worker-24" Id=619 TIMED_WAITING on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at org.eclipse.core.internal.jobs.WorkerPool.sleep(WorkerPool.java:188)
	at org.eclipse.core.internal.jobs.WorkerPool.startJob(WorkerPool.java:220)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:50)


"Worker-23" Id=616 TIMED_WAITING on org.eclipse.ui.internal.Semaphore@4b8d6358
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.ui.internal.Semaphore@4b8d6358
	at org.eclipse.ui.internal.Semaphore.acquire(Semaphore.java:43)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:168)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4688)
	at org.eclipse.egit.ui.Activator.isActive(Activator.java:241)
	at org.eclipse.egit.ui.Activator$RepositoryChangeScanner.runInWorkspace(Activator.java:452)
	at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)


"Scala Presentation Compiler [comps-input]" Id=597 RUNNABLE
	at java.lang.Object.hashCode(Native Method)
	at scala.runtime.ScalaRunTime$.hash(ScalaRunTime.scala:210)
	at scala.util.hashing.MurmurHash3.productHash(MurmurHash3.scala:63)
	at scala.util.hashing.MurmurHash3$.productHash(MurmurHash3.scala:210)
	at scala.runtime.ScalaRunTime$._hashCode(ScalaRunTime.scala:172)
	at scala.reflect.internal.Types$RefinedType.hashCode(Types.scala:1782)
	at scala.runtime.ScalaRunTime$.hash(ScalaRunTime.scala:210)
	at scala.util.hashing.MurmurHash3.productHash(MurmurHash3.scala:63)
	at scala.util.hashing.MurmurHash3$.productHash(MurmurHash3.scala:210)
	at scala.runtime.ScalaRunTime$._hashCode(ScalaRunTime.scala:172)
	at scala.reflect.internal.Types$UniqueType.computeHashCode(Types.scala:1305)
	at scala.reflect.internal.Types$UniqueType.<init>(Types.scala:1304)
	at scala.reflect.internal.Types$SubType.<init>(Types.scala:1311)
	at scala.reflect.internal.Types$TypeBounds.<init>(Types.scala:1566)
	at scala.reflect.internal.Types$UniqueTypeBounds.<init>(Types.scala:1585)
	at scala.reflect.internal.Types$TypeBounds$.apply(Types.scala:1592)
	at scala.reflect.internal.Types$TypeBounds$.upper(Types.scala:1589)
	at scala.reflect.internal.Types$class.singletonBounds(Types.scala:4486)
	at scala.reflect.internal.SymbolTable.singletonBounds(SymbolTable.scala:13)
	at scala.reflect.internal.Types$AsSeenFromMap.stabilize(Types.scala:4529)
	at scala.reflect.internal.Types$AsSeenFromMap.toPrefix$1(Types.scala:4549)
	at scala.reflect.internal.Types$AsSeenFromMap.apply(Types.scala:4556)
	at scala.reflect.internal.Types$TypeMap.mapOver(Types.scala:4183)
	at scala.reflect.internal.Types$AsSeenFromMap.apply(Types.scala:4638)
	at scala.reflect.internal.Types$Type.asSeenFrom(Types.scala:754)
	at scala.reflect.internal.Types$TypeRef.asSeenFromOwner(Types.scala:2410)
	at scala.reflect.internal.Types$NoArgsTypeRef.transform(Types.scala:2159)
	at scala.reflect.internal.Types$AliasTypeRef$class.betaReduce(Types.scala:2263)
	at scala.reflect.internal.Types$TypeRef$$anon$3.betaReduce(Types.scala:2539)
	at scala.reflect.internal.Types$AliasTypeRef$class.dealias(Types.scala:2232)
	at scala.reflect.internal.Types$TypeRef$$anon$3.dealias(Types.scala:2539)
	at scala.reflect.internal.Types$AliasTypeRef$class.dealias(Types.scala:2232)
	at scala.reflect.internal.Types$TypeRef$$anon$3.dealias(Types.scala:2539)
	at scala.reflect.internal.Types$Type.dealiasWiden(Types.scala:604)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch.isImpossibleSubType(Implicits.scala:608)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch.isPlausiblySubType(Implicits.scala:603)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch.loop$1(Implicits.scala:595)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch.checkCompatibility(Implicits.scala:597)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch.isPlausiblyCompatible(Implicits.scala:373)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch$ImplicitComputation.survives(Implicits.scala:854)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch$ImplicitComputation$$anonfun$15$$anonfun$16.apply(Implicits.scala:909)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch$ImplicitComputation$$anonfun$15$$anonfun$16.apply(Implicits.scala:909)
	at scala.collection.TraversableLike$$anonfun$filter$1.apply(TraversableLike.scala:264)
	at scala.collection.immutable.List.foreach(List.scala:318)
	at scala.collection.TraversableLike$class.filter(TraversableLike.scala:263)
	at scala.collection.AbstractTraversable.filter(Traversable.scala:105)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch$ImplicitComputation$$anonfun$15.apply(Implicits.scala:909)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch$ImplicitComputation$$anonfun$15.apply(Implicits.scala:908)
	at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
	at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
	at scala.collection.immutable.List.foreach(List.scala:318)
	at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:251)
	at scala.collection.AbstractTraversable.flatMap(Traversable.scala:105)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch$ImplicitComputation.<init>(Implicits.scala:908)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch.searchImplicit(Implicits.scala:1040)
	at scala.tools.nsc.typechecker.Implicits$ImplicitSearch.bestImplicit(Implicits.scala:1409)
	at scala.tools.nsc.typechecker.Implicits$class.inferImplicit(Implicits.scala:82)
	at scala.tools.nsc.Global$$anon$1.inferImplicit(Global.scala:493)
	at scala.tools.nsc.typechecker.Implicits$class.inferImplicit(Implicits.scala:37)
	at scala.tools.nsc.Global$$anon$1.inferImplicit(Global.scala:493)
	at scala.tools.nsc.typechecker.Typers$Typer.applyImplicitArgs(Typers.scala:127)
	at scala.tools.nsc.typechecker.Typers$Typer.adaptToImplicitMethod$1(Typers.scala:869)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1126)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5660)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5721)
	at scala.tools.nsc.typechecker.Typers$Typer.computeType(Typers.scala:5808)
	at scala.tools.nsc.typechecker.Namers$Namer.assignTypeToTree(Namers.scala:834)
	at scala.tools.nsc.typechecker.Namers$Namer.valDefSig(Namers.scala:1315)
	at scala.tools.nsc.typechecker.Namers$Namer.getSig$1(Namers.scala:1457)
	at scala.tools.nsc.typechecker.Namers$Namer.typeSig(Namers.scala:1466)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply$mcV$sp(Namers.scala:731)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply(Namers.scala:730)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply(Namers.scala:730)
	at scala.tools.nsc.typechecker.Namers$Namer.scala$tools$nsc$typechecker$Namers$Namer$$logAndValidate(Namers.scala:1499)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1.apply(Namers.scala:730)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1.apply(Namers.scala:729)
	at scala.tools.nsc.typechecker.Namers$$anon$1.completeImpl(Namers.scala:1614)
	at scala.tools.nsc.typechecker.Namers$LockingTypeCompleter$class.complete(Namers.scala:1622)
	at scala.tools.nsc.typechecker.Namers$$anon$1.complete(Namers.scala:1612)
	at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1231)
	at scala.reflect.internal.Symbols$Symbol.initialize(Symbols.scala:1374)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5295)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
	at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedStat$1(Typers.scala:2928)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
	at scala.collection.immutable.List.loop$1(List.scala:170)
	at scala.collection.immutable.List.mapConserve(List.scala:186)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:3032)
	at scala.tools.nsc.typechecker.Typers$Typer.typedBlock(Typers.scala:2432)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5570)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5721)
	at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedFunction(Typers.scala:2853)
	at scala.tools.nsc.typechecker.Typers$Typer.typedFunction$1(Typers.scala:5556)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5575)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
	at scala.tools.nsc.typechecker.Typers$Typer.typedArg(Typers.scala:3042)
	at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedArgToPoly$1(Typers.scala:3418)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$70.apply(Typers.scala:3426)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$70.apply(Typers.scala:3426)
	at scala.reflect.internal.util.Collections$class.map2(Collections.scala:51)
	at scala.reflect.internal.SymbolTable.map2(SymbolTable.scala:13)
	at scala.tools.nsc.typechecker.Typers$Typer.handlePolymorphicCall$1(Typers.scala:3426)
	at scala.tools.nsc.typechecker.Typers$Typer.doTypedApply(Typers.scala:3438)
	at scala.tools.nsc.typechecker.Typers$Typer.normalTypedApply$1(Typers.scala:4627)
	at scala.tools.nsc.typechecker.Typers$Typer.typedApply$1(Typers.scala:4659)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5564)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5721)
	at scala.tools.nsc.typechecker.Typers$Typer.computeType(Typers.scala:5808)
	at scala.tools.nsc.typechecker.Namers$Namer.assignTypeToTree(Namers.scala:834)
	at scala.tools.nsc.typechecker.Namers$Namer.valDefSig(Namers.scala:1315)
	at scala.tools.nsc.typechecker.Namers$Namer.getSig$1(Namers.scala:1457)
	at scala.tools.nsc.typechecker.Namers$Namer.typeSig(Namers.scala:1466)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply$mcV$sp(Namers.scala:731)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply(Namers.scala:730)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply(Namers.scala:730)
	at scala.tools.nsc.typechecker.Namers$Namer.scala$tools$nsc$typechecker$Namers$Namer$$logAndValidate(Namers.scala:1499)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1.apply(Namers.scala:730)
	at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1.apply(Namers.scala:729)
	at scala.tools.nsc.typechecker.Namers$$anon$1.completeImpl(Namers.scala:1614)
	at scala.tools.nsc.typechecker.Namers$LockingTypeCompleter$class.complete(Namers.scala:1622)
	at scala.tools.nsc.typechecker.Namers$$anon$1.complete(Namers.scala:1612)
	at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1231)
	at scala.reflect.internal.Symbols$Symbol.initialize(Symbols.scala:1374)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5295)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
	at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedStat$1(Typers.scala:2928)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
	at scala.collection.immutable.List.loop$1(List.scala:170)
	at scala.collection.immutable.List.mapConserve(List.scala:186)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:3032)
	at scala.tools.nsc.typechecker.Typers$Typer.typedBlock(Typers.scala:2432)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5570)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
	at scala.tools.nsc.typechecker.Typers$Typer.typedArg(Typers.scala:3042)
	at scala.tools.nsc.typechecker.Typers$Typer.loop$1(Typers.scala:3069)
	at scala.tools.nsc.typechecker.Typers$Typer.typedArgs(Typers.scala:3074)
	at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$handleMonomorphicCall$1(Typers.scala:3354)
	at scala.tools.nsc.typechecker.Typers$Typer.doTypedApply(Typers.scala:3398)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$92.apply(Typers.scala:4568)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$92.apply(Typers.scala:4568)
	at scala.tools.nsc.typechecker.Typers$Typer.silent(Typers.scala:727)
	at scala.tools.nsc.typechecker.Typers$Typer.tryTypedApply$1(Typers.scala:4568)
	at scala.tools.nsc.typechecker.Typers$Typer.normalTypedApply$1(Typers.scala:4626)
	at scala.tools.nsc.typechecker.Typers$Typer.typedApply$1(Typers.scala:4659)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5564)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
	at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedStat$1(Typers.scala:2928)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
	at scala.collection.immutable.List.loop$1(List.scala:170)
	at scala.collection.immutable.List.mapConserve(List.scala:186)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:3032)
	at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:1919)
	at scala.tools.nsc.typechecker.Typers$Typer.typedClassDef(Typers.scala:1759)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5583)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
	at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedStat$1(Typers.scala:2928)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
	at scala.collection.immutable.List.loop$1(List.scala:170)
	at scala.collection.immutable.List.mapConserve(List.scala:186)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:3032)
	at scala.tools.nsc.typechecker.Typers$Typer.typedPackageDef$1(Typers.scala:5301)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5587)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5704)
	at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3.apply(Analyzer.scala:99)
	at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:464)
	at scala.tools.nsc.interactive.Global$TyperRun$$anonfun$applyPhase$1.apply(Global.scala:1173)
	at scala.tools.nsc.interactive.Global$TyperRun$$anonfun$applyPhase$1.apply(Global.scala:1173)
	at scala.reflect.internal.SymbolTable.atPhase(SymbolTable.scala:207)
	at scala.tools.nsc.interactive.Global$TyperRun.applyPhase(Global.scala:1173)
	at scala.tools.nsc.interactive.Global$TyperRun.typeCheck(Global.scala:1166)
	at scala.tools.nsc.interactive.Global.scala$tools$nsc$interactive$Global$$typeCheck(Global.scala:592)
	at scala.tools.nsc.interactive.Global$$anonfun$backgroundCompile$5$$anonfun$apply$7.apply(Global.scala:508)
	at scala.tools.nsc.interactive.Global$$anonfun$backgroundCompile$5.apply(Global.scala:504)
	at scala.tools.nsc.interactive.Global$$anonfun$backgroundCompile$5.apply(Global.scala:504)
	at scala.collection.TraversableLike$WithFilter$$anonfun$foreach$1.apply(TraversableLike.scala:772)
	at scala.collection.immutable.List.foreach(List.scala:318)
	at scala.collection.TraversableLike$WithFilter.foreach(TraversableLike.scala:771)
	at scala.tools.nsc.interactive.Global.backgroundCompile(Global.scala:504)
	at scala.tools.nsc.interactive.PresentationCompilerThread.run(PresentationCompilerThread.scala:25)


"org.eclipse.jdt.internal.ui.text.JavaReconciler" Id=579 TIMED_WAITING on org.eclipse.jface.text.reconciler.DirtyRegionQueue@28bef35a
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.jface.text.reconciler.DirtyRegionQueue@28bef35a
	at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:179)


"Worker-18" Id=571 TIMED_WAITING on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.core.internal.jobs.WorkerPool@4b81ce5e
	at org.eclipse.core.internal.jobs.WorkerPool.sleep(WorkerPool.java:188)
	at org.eclipse.core.internal.jobs.WorkerPool.startJob(WorkerPool.java:220)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:50)


"Scala Presentation Compiler [_Test]" Id=566 WAITING on scala.tools.nsc.util.WorkScheduler@297c6dd3
	at java.lang.Object.wait(Native Method)
	-  waiting on scala.tools.nsc.util.WorkScheduler@297c6dd3
	at java.lang.Object.wait(Object.java:503)
	at scala.tools.nsc.util.WorkScheduler.waitForMoreWork(WorkScheduler.scala:16)
	at scala.tools.nsc.interactive.PresentationCompilerThread$$anonfun$run$1.apply$mcZ$sp(PresentationCompilerThread.scala:21)
	at scala.tools.nsc.io.NullLogger$.logreplay(Replayer.scala:38)
	at scala.tools.nsc.interactive.PresentationCompilerThread.run(PresentationCompilerThread.scala:21)


"Scala Presentation Compiler [persistence]" Id=418 WAITING on scala.tools.nsc.util.WorkScheduler@52ac8af1
	at java.lang.Object.wait(Native Method)
	-  waiting on scala.tools.nsc.util.WorkScheduler@52ac8af1
	at java.lang.Object.wait(Object.java:503)
	at scala.tools.nsc.util.WorkScheduler.waitForMoreWork(WorkScheduler.scala:16)
	at scala.tools.nsc.interactive.PresentationCompilerThread$$anonfun$run$1.apply$mcZ$sp(PresentationCompilerThread.scala:21)
	at scala.tools.nsc.io.NullLogger$.logreplay(Replayer.scala:38)
	at scala.tools.nsc.interactive.PresentationCompilerThread.run(PresentationCompilerThread.scala:21)


"JavaScript indexing" Id=295 WAITING on org.eclipse.wst.jsdt.internal.core.search.indexing.IndexManager@824066c
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.wst.jsdt.internal.core.search.indexing.IndexManager@824066c
	at java.lang.Object.wait(Object.java:503)
	at org.eclipse.wst.jsdt.internal.core.search.processing.JobManager.run(JobManager.java:370)
	at java.lang.Thread.run(Thread.java:744)


"Scala Presentation Compiler [commons]" Id=143 WAITING on scala.tools.nsc.util.WorkScheduler@7521a0a0
	at java.lang.Object.wait(Native Method)
	-  waiting on scala.tools.nsc.util.WorkScheduler@7521a0a0
	at java.lang.Object.wait(Object.java:503)
	at scala.tools.nsc.util.WorkScheduler.waitForMoreWork(WorkScheduler.scala:16)
	at scala.tools.nsc.interactive.PresentationCompilerThread$$anonfun$run$1.apply$mcZ$sp(PresentationCompilerThread.scala:21)
	at scala.tools.nsc.io.NullLogger$.logreplay(Replayer.scala:38)
	at scala.tools.nsc.interactive.PresentationCompilerThread.run(PresentationCompilerThread.scala:21)


"Svelto worker" Id=42 WAITING on org.eclipse.swt.widgets.RunnableLock@4696ca44
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.swt.widgets.RunnableLock@4696ca44
	at java.lang.Object.wait(Object.java:503)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:187)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4688)
	at org.svelto.watchdog.UIWorker.syncExec(UIWorker.scala:33)
	at org.svelto.watchdog.UIWorker.run(UIWorker.scala:19)


"441596631@qtp-344571444-1 - Acceptor0 SocketConnector@127.0.0.1:51235" Id=40 RUNNABLE (in native)
	at java.net.DualStackPlainSocketImpl.accept0(Native Method)
	at java.net.DualStackPlainSocketImpl.socketAccept(DualStackPlainSocketImpl.java:131)
	at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398)
	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:198)
	-  locked java.net.SocksSocketImpl@6a772c13
	at java.net.ServerSocket.implAccept(ServerSocket.java:530)
	at java.net.ServerSocket.accept(ServerSocket.java:498)
	at org.mortbay.jetty.bio.SocketConnector.accept(SocketConnector.java:99)
	at org.mortbay.jetty.AbstractConnector$Acceptor.run(AbstractConnector.java:707)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)


"668833592@qtp-344571444-0" Id=39 TIMED_WAITING on org.mortbay.thread.QueuedThreadPool$PoolThread@27dd9738
	at java.lang.Object.wait(Native Method)
	-  waiting on org.mortbay.thread.QueuedThreadPool$PoolThread@27dd9738
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:626)


"Svelto Watchdog" Id=38 RUNNABLE
	at sun.management.ThreadImpl.dumpThreads0(Native Method)
	at sun.management.ThreadImpl.dumpAllThreads(ThreadImpl.java:446)
	at org.svelto.watchdog.WatchdogThread.org$svelto$watchdog$WatchdogThread$$getThreadInfoMX(WatchdogThread.scala:114)
	at org.svelto.watchdog.WatchdogThread$$anonfun$dumpThreads$1.apply(WatchdogThread.scala:60)
	at org.svelto.watchdog.WatchdogThread$$anonfun$dumpThreads$1.apply(WatchdogThread.scala:58)
	at org.svelto.watchdog.WatchdogThread.appendToFile(WatchdogThread.scala:89)
	at org.svelto.watchdog.WatchdogThread.dumpThreads(WatchdogThread.scala:58)
	at org.svelto.watchdog.WatchdogThread.run(WatchdogThread.scala:48)


"Java indexing" Id=29 WAITING on org.eclipse.jdt.internal.core.search.indexing.IndexManager@42a8474f
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.jdt.internal.core.search.indexing.IndexManager@42a8474f
	at java.lang.Object.wait(Object.java:503)
	at org.eclipse.jdt.internal.core.search.processing.JobManager.run(JobManager.java:382)
	at java.lang.Thread.run(Thread.java:744)


"EMF Reference Cleaner" Id=21 WAITING on java.lang.ref.ReferenceQueue$Lock@35e1b5b9
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.ReferenceQueue$Lock@35e1b5b9
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
	at org.eclipse.emf.common.util.CommonUtil$1ReferenceClearingQueuePollingThread.run(CommonUtil.java:70)


"[ThreadPool Manager] - Idle Thread" Id=18 WAITING on org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor@23ddb577
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor@23ddb577
	at java.lang.Object.wait(Object.java:503)
	at org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor.run(Executor.java:106)


"[Timer] - Main Queue Handler" Id=17 TIMED_WAITING on java.lang.Object@7561a051
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.Object@7561a051
	at org.eclipse.equinox.internal.util.impl.tpt.timer.TimerImpl.run(TimerImpl.java:141)
	at java.lang.Thread.run(Thread.java:744)


"Worker-JM" Id=16 WAITING on java.util.ArrayList@5c64620b
	at java.lang.Object.wait(Native Method)
	-  waiting on java.util.ArrayList@5c64620b
	at org.eclipse.core.internal.jobs.InternalWorker.run(InternalWorker.java:58)


"Framework Event Dispatcher" Id=15 WAITING on org.eclipse.osgi.framework.eventmgr.EventManager$EventThread@4260ef90
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.osgi.framework.eventmgr.EventManager$EventThread@4260ef90
	at java.lang.Object.wait(Object.java:503)
	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.getNextEvent(EventManager.java:400)
	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:336)


"Start Level Event Dispatcher" Id=14 WAITING on org.eclipse.osgi.framework.eventmgr.EventManager$EventThread@6a0ff8fb
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.osgi.framework.eventmgr.EventManager$EventThread@6a0ff8fb
	at java.lang.Object.wait(Object.java:503)
	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.getNextEvent(EventManager.java:400)
	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:336)


"Bundle File Closer" Id=13 WAITING on org.eclipse.osgi.framework.eventmgr.EventManager$EventThread@3ea35d23
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.osgi.framework.eventmgr.EventManager$EventThread@3ea35d23
	at java.lang.Object.wait(Object.java:503)
	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.getNextEvent(EventManager.java:400)
	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:336)


"State Data Manager" Id=12 TIMED_WAITING
	at java.lang.Thread.sleep(Native Method)
	at org.eclipse.osgi.internal.baseadaptor.StateManager.run(StateManager.java:297)
	at java.lang.Thread.run(Thread.java:744)


"Framework Active Thread" Id=11 TIMED_WAITING on org.eclipse.osgi.framework.internal.core.Framework@5737c4f5
	at java.lang.Object.wait(Native Method)
	-  waiting on org.eclipse.osgi.framework.internal.core.Framework@5737c4f5
	at org.eclipse.osgi.framework.internal.core.Framework.run(Framework.java:1862)
	at java.lang.Thread.run(Thread.java:744)


"Attach Listener" Id=6 RUNNABLE


"Signal Dispatcher" Id=5 RUNNABLE


"Finalizer" Id=3 WAITING on java.lang.ref.ReferenceQueue$Lock@e63dd8f
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.ReferenceQueue$Lock@e63dd8f
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:189)


"Reference Handler" Id=2 WAITING on java.lang.ref.Reference$Lock@3e66deaa
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.Reference$Lock@3e66deaa
	at java.lang.Object.wait(Object.java:503)
	at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)

file:di0YvY5yGr44ouacwqjQXA

file:aFUS_G6Var45RcacwqjQXA

file:b1vsqo6Ver46_cdmr6bg7m

Thanks for the additional stack traces. The expensive calls (on the UI thread!) seem to come from the mylyn plugin:

	at org.eclipse.jdt.internal.corext.util.JavaModelUtil.reconcile(JavaModelUtil.java:609)
	at org.eclipse.jdt.internal.ui.actions.SelectionConverter.resolveEnclosingElement(SelectionConverter.java:302)
	at org.eclipse.jdt.internal.ui.actions.SelectionConverter.resolveEnclosingElement(SelectionConverter.java:294)
**	at org.eclipse.mylyn.internal.java.ui.JavaEditingMonitor.handleWorkbenchPartSelection(JavaEditingMonitor.java:87)
	at org.eclipse.mylyn.monitor.ui.AbstractUserInteractionMonitor.selectionChanged(AbstractUserInteractionMonitor.java:72)

To make things worse, this is performed on every selection change (which includes mouse movements and typing). Can you try disabling this view (assuming you have it open)?

The completion-related hang was fixed in PR 707. The fix will be available in tomorrow's nightly (June 4).

I've disabled Mylyn completely and has been working on latest nightly build for 3 weeks now. Everything works much smoother now, thanks! Only remaining hang is the one that happens during large files saving.

Alex, good to know! Not sure yet why `save` is blocked by the type checker, we might try a shot in the dark. Would you be able to try a nightly and let us know if it helps?

Sure, should I do it now?

No, it didn't happen yet. I'm not sure we have a good answer for making mylyn faster..