One could use a profiler, but why not just halt the program? [closed]

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On Java servers it’s always been a neat trick to do 2-3 quick Ctrl–Breakss in a row and get 2-3 threaddumps of all running threads. Simply looking at where all the threads “are” may extremely quickly pinpoint where your performance problems are.

This technique can reveal more performance problems in 2 minutes than any other technique I know of.

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