作者: Charles Suresh
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摘要: A system and methods are provided for inserting probe points into an executing program, measuring the time spent traversing code paths from one point to any other or some performance metric (e.g., instructions executed, cache misses, memory addresses accessed). One method is implemented by N probes. Each has a corresponding function configured to: retrieve identifier timestamp of previous calculate path current probe, update matrix N×N elements, wherein each element corresponds another probe. After completion this useful identifying that bottlenecks hence candidates optimization.