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Created attachment 119741 [details] Profiler snapshot - IDE does not seem to be busy at all. Maybe this is just P2, but as the driver for 7.2 was fast navigator, it may be P1 as well... I've opened o.n.boostrap/**/CLIHandler.java via netbeans --open CLIHandler.java and pressed Ctrl-7 to navigate to a method. The navigator remains empty. Even after 90s. No indication in the UI is given to what is happening.
Created attachment 119742 [details] messages.log
In fact this is not a performance issue as you can see from the npss file you have attached. The Editor Dispatch Thread is IDLE and waiting for some work to do. So the navigator will not be shown until some change. It's a race either in navigator infrastructure or in both java and CSL implementation of navigator as it happens in both of them.
I've found one possible race and fix it. Fixed jet-main 82717bc0d30d
Integrated into 'main-golden', will be available in build *201205250002* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-golden/rev/82717bc0d30d User: Tomas Zezula <tzezula@netbeans.org> Log: #212858:Navigator content is not shown