Trace Python execution with low overhead and visualize it in Perfetto

githubprojects@opensourceprojects.dev (githubprojects) · Sep 14, 2026 · via Open Source Projects · 1 min read

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gaogaotiantian/viztracer

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A debugging and profiling tool that can trace and visualize python code execution

PythonApache-2.0#debugging#flamegraph#logging#profiling#python#python3
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You've probably been there: something in your Python code is slow, and you've got a vague sense of where the problem lives, but `print` statements and guesswork aren't cutting it. You want to actually see what's happening—which functions run, in what order, and for how long. VizTracer is a tool buil... GitHub Repository: https://github.com/gaogaotiantian/viztracer

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