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This issue was reported manually by sdedic. It already has 3 duplicates Build: NetBeans IDE 7.3.1 (Build 201306052037) VM: Java HotSpot(TM) 64-Bit Server VM, 23.25-b01, Java(TM) SE Runtime Environment, 1.7.0_25-b17 OS: Windows 8 User Comments: GUEST: It's very slow. during editing, or debugging; when I try to write something, the program seam to freeze, sometime for 20 or 30 seconds, and I can wait until the control come back. This happen frequently two or three times in five minutes. It'is impossible to develop. My Operating System is MacOsx Mountain and I have the problem on tw different machines. Kalel: problema al levantar mi servidor Maximum slowness yet reported was 29429 ms, average is 24467
Created attachment 138926 [details] nps snapshot
I cut off these reports from the issue #230544 as the reason for slowness here is different. it seems that some actions need parsing results, so they attempt to post an user task, but the parsing system is busy performing another user task at the moment (hints, typically). That way "relatively" quick tasks required to disable/enable or even execute an action are stuck because of background processing (hints). In this case, those tasks are even willing to wait, or recover from a situation when parsing is not available - they use parseWhenScanFinished() and work with the provided Future. But in case another UserTask is being executed, the method blocks. This is exactly as documented in the API, but forces API users to code some fallback mechanism or block the EDT. See also issue #213998, similar to reports linked here. Please evaluate. If it is not desirable to provide support for this case in parsing APIs, please reassign to JEE support and others according to the linked reports.
The parsing should not be done in EDT as parsing & attribution does IO. Nothing to do with p.a, reassigning.
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue. Thanks for your cooperation, NetBeans IDE 8.2 Release Boss