In case you haven't read these two posts from the south african game development magazine - do so now.

Make your logs interactive and squash bugs faster

Using graphs to debug physics, AI, and animation effectively

Well, I took his good advice and I have been working on some modules ( really only takes a few minutes ) to make this possible in Laboratory2D. For example, here is a graph of the FPS over time, where the 'warning level' was set to 800FPS. If it drops to below that, it flags it as red. Ill be making these a little more interactive with hover information and if i can, i want to try and log a state at the time a min spike happens, like a deeper stack trace or something.