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Product Version = NetBeans IDE 7.3 RC1 (Build 201301102100) Operating System = Windows 7 version 6.1 running on x86 Java; VM; Vendor = 1.7.0_11 Runtime = Java HotSpot(TM) Client VM 23.6-b04 While debugging I noticed the IDE sluggish and noticed a series of previous debug runs showing on the task bar. Trying to cancel those doesn't work. When closing the IDE those show on the running task prompts and you have to tell it to cancel those twice as it shows the prompt two time.
Created attachment 130262 [details] IDE log
Created attachment 130263 [details] .npss file attached from NetBeans .npss file
Javier, what kind of projects were those you debugged?
From the snapshot it's apparent that a lot of time is spent in GUI drawing, which seems to be simply slow. The reason is not apparent and it does not seem to be the main problem. During the whole period, "Err Thread for {0} (debug)" is 100% active and is parsing the program output. This seems to slow down the whole system. Does your program produce an excessive amount of output? This looks like the problem.
Is a plain Java application. Sadly is private code so I can't give you an URL. If you would like to take a look we'll need to set up some kind of private sharing. Is weird because it is a simple GUI. There is some output but not what I would consider big. Output to console is done without problems but even after I exit the debug session it seems to stay open in the background. Closing it from the task bar doesn't do anything either.
Can you create some sample project to reproduce this issue? Or can you try if you will have similar problems with Anagrame Game application (New Project -> Samples -> Java -> Anagrame Game)? The thread that reads error output spends much more time in parsing than in reading, which suggests, that there is really a lot of error output.
Shouldn't even that be stopped when you stop the task? Having huge amounts of error might be appropriate in some situations. The issue is why is not stopping when being told to.
Then it needs to be better handled in ANT...
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