alt Hacker NewsIt does not, those are just very inefficient tracing profilers. You can literally trace C programs in 10-30% overhead. For Python you should only accept low single-digit overhead on average with 10% overhead only in degenerate cases with large numbers of tiny functions [1]. Anything more means your tracer is inefficient.
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hansvm • last Tuesday at 4:10 AM
That's... intriguing. I just tested out functiontrace and saw 20-30% overhead. I didn't expect it to be anywhere near that low.
Interesting, but "FunctionTrace is opensourced under the Prosperity Public License 3.0 license."
"This license allows you to use and share this software for noncommercial purposes for free and to try this software for commercial purposes for thirty days."
This is not an open source license. "Open Source" is a trademarked term meaning without restrictions of this kind; it is not a generic term meaning "source accessible".
You can also just use perf, but it does require an extra package from the python build (which uv frustratingly doesn't supply)