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FlameScope sub-second heatmap visualization.Less than a year ago, FlameScope was released as a proof of concept for a new profile visualization. Since then, it helped us, and many other users, to easily find and fix performance issues, and allowed us to see patterns that we had never noticed before in our profiles.As a tool, FlameScope was limited. It only supported the profile format generated by Linux perf, which at the time, was the profiler of choice internally at Netflix.Immediately after l...