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This issue was reported manually by jglick. It already has 1 duplicates Build: NetBeans IDE Dev (Build 20151104-5022c03c8164) VM: Java HotSpot(TM) 64-Bit Server VM, 25.66-b17, Java(TM) SE Runtime Environment, 1.8.0_66-b17 OS: Linux User Comments: jglick: Find Usages was running in one tab (looking up Maven repo usages I suppose). I pressed Alt-Shift-U on another type and the IDE froze. (For longer than 11s. More like a couple of minutes.) Maximum slowness yet reported was 11445 ms, average is 11445
Created attachment 157783 [details] nps snapshot
Created attachment 157784 [details] dump of active threads The slowness detector seems to have misclassified this completely. Attached a thread dump taken while the IDE was frozen for a couple minutes; AFAICT there was no disk activity at the time, or maybe only sporadic. It seems that ParametersPanel is doing some kind of complex calculation, and the event thread is blocked waiting for it.