GIL: Everything You Wanted to Know and Were Afraid to Ask
summary
Explains how Python's Global Interpreter Lock (GIL) works, when execution switches between threads, and the performance costs of operating with the GIL (both on and off thread-switches). Covers guidance for C-extension developers on whether to hold or release the GIL, embedding Python in larger applications, low-level (near-assembly) examples, and the GIL's evolution across Python versions.
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chapters (10)
- 0:00GIL introduction
- 1:18GIL origin and purpose
- 6:39Python 2.7 evolution
- 11:11GIL behavior in threads
- 15:03GIL release in modules
- 17:10Python 3.6 changes
- 20:26GIL performance impact
- 22:12Practical cases and limits
- 24:44GIL removal projects
- 26:50Conclusion and Q&A
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