Intel / article

Profiling web-edit with Python 3.15: flame graphs and source heatmaps

Source: simonwillison.net
Date: Published Oct 12, 2026

Why it matters

Shows a repeatable loop where a coding profiles real code with Python 3.15's sampling profiler and the results feed optimizations. The all-thread sampling result is a practical pitfall to avoid.

Terms in this piece · Glossary

AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.

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