This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
Created attachment 158308 [details] messages.log Product Version: NetBeans IDE Dev (Build 201601210002) Updates: Updates available Java: 1.8.0_71; Java HotSpot(TM) 64-Bit Server VM 25.71-b15 Runtime: Java(TM) SE Runtime Environment 1.8.0_71-b15 System: Windows 10 version 10.0 running on amd64; UTF-8; en_CA (nb) User directory: C:\Users\Gili\AppData\Roaming\NetBeans\dev Cache directory: C:\Users\Gili\AppData\Local\NetBeans\Cache\dev It seems that Find Usages is invoking an expensive task on the AWT thread. If a user invokes Find Usages twice (the second time while the first search is still ongoing) the entire IDE hangs until the search completes. If you search for a very common method, such as Object.hashCode() the IDE hangs for quite a while. Repro steps: 1. Open Java project 2. Invoke Find Usages (ALT-F7) on a class that implements hashCode() 3. Start the search from Object.hashCode() 4. Before the operation can complete, hit ALT-F7 again. 5. The IDE will hang for 20 seconds, until the Find Usages operation completes and the second Find Usages dialog can come up. 6. messages.log contains this warning which might be relevant: WARNING [org.netbeans.modules.parsing.impl.TaskProcessor]: ParserManager.parse called in AWT event thread by: org.netbeans.modules.refactoring.java.ui.ContextAnalyzer$TextComponentTask.run(ContextAnalyzer.java:385) I am attaching the full messages.log for your review.