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Created attachment 133450 [details] snapshot See attached snapshot, hang at ~11:33. MainMenuAction is waiting for "Diffsidebar long tasks" in EDT.
Please have a look at the threads 1. Parallel analyzing /var/tmp/.... 2. AWT-EventQueue-0 3. Diffsidebar long tasks Thread 1. holds the mutex from FileObjectFactory.getFileObject and waits 60s in one call to java.io.File.exists(). Thread 3. waits for the mutex while holding the lock from DataObject. Thread 2. in the call from editor is trying to just call FileUtil.getConfigObject(). Although it is calling an IO from AWT thread it is an IO from the user dir which should be fast. BUT the call ends up in DataObject.find() which in turns wait for thread 3. (and thus for thread 1.) Passing to file systems for evaluation. Not sure we can do something in the editor to correct this.
http://hg.netbeans.org/core-main/rev/0b7ae7d9e042 > Thread 1. holds the mutex from FileObjectFactory.getFileObject and waits 60s > in one call to java.io.File.exists(). File.exists() is now called outside of the lock (used the same solution as in getChildren). Please verify. Thank you for reporting, and for excellent description of the problem.
Integrated into 'main-silver', will be available in build *201307012300* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-silver/rev/0b7ae7d9e042 User: Jaroslav Havlin <jhavlin@netbeans.org> Log: #228470: IDE hang for a couple minutes
*** Bug 225288 has been marked as a duplicate of this bug. ***