cProfile
A tracing profiler built into the Python standard library. It produces precise statistics by hooking every function call, return, and related event, but it slows program execution considerably. In Python 3.15 it was renamed to profiling.tracing.
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Common Python profiling tools include Python's cProfile, py-spy, and various sampling profilers.
Deterministic profilers (such as cProfile) intercept every function call and return via hooks, precisely recording call counts and cumulative time, but they introduce significant runtime overhead, can slow a program down several times in high-frequency call scenarios, and cause observer effects.
Python 3.15 adds the sampling profiler Tachyon (profiling.sampling) to the standard library and renames the existing tracing profiler cProfile to profiling.tracing.
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Common Python profiling tools include Python's cProfile, py-spy, and various sampling profilers.
50%UnverifiedDeterministic profilers (such as cProfile) intercept every function call and return via hooks, precisely recording call counts and cumulative time, but they introduce significant runtime overhead, can slow a program down several times in high-frequency call scenarios, and cause observer effects.
50%UnverifiedPython 3.15 adds the sampling profiler Tachyon (profiling.sampling) to the standard library and renames the existing tracing profiler cProfile to profiling.tracing.
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