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Created attachment 146777 [details] Messages log
Created attachment 146778 [details] .npss file attached from NetBeans .npss file
java version "1.7.0_51" Java(TM) SE Runtime Environment (build 1.7.0_51-b13) Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
It is really annoying, it's impossible to use it in a regular developing process. It also happened with Netbeans 7.4. I upgraded to see if it was a corrected bug, but same behaviour. The problem starts when starting first debugging session with tomcat.
Created attachment 146780 [details] Snapshot when occurring problem
According to last npss file, there is an excessive amount of logs from tomcat. They are processed by netbeans and displayed in output window. Reassigning to tomcat, to investigate if there is way to optimise processing of tomcat output. org.netbeans.modules.tomcat5.util.ServerLog$AnalyzingLineProcessor.processLine() in thread "pool-1-thread-1" and org.netbeans.modules.tomcat5.util.LogViewer$ContextLogSupport.analyzeLine() in thread "LogViewer - Thread" are taking considerable amount of CPU time.
*** This bug has been marked as a duplicate of bug 206281 ***