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gh-148907: fix performance regression in PyType_GetModuleByDef on free-threading - #148908

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kumaraditya303 merged 1 commit into
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kumaraditya303:tls-regression
Apr 23, 2026
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gh-148907: fix performance regression in PyType_GetModuleByDef on free-threading#148908
kumaraditya303 merged 1 commit into
python:mainfrom
kumaraditya303:tls-regression

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@kumaraditya303

@kumaraditya303kumaraditya303 commented Apr 23, 2026•
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On this PR:

❯ ./python.exe Tools/ftscalingbench/ftscalingbench.py --threads=10 thread_local_readRunning benchmarks with 10 threadsthread_local_read 4.7x faster

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kumaraditya303 merged commit 29917d5 into python:mainApr 23, 2026
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kumaraditya303 deleted the tls-regression branch April 23, 2026 11:13
ljfp pushed a commit to ljfp/cpython that referenced this pull request Apr 25, 2026
@kumaraditya303@ljfp
pythongh-148907: fix performance regression in `PyType_GetModuleByDef…
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…` on free-threading (python#148908)
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encukou commented May 1, 2026

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Thank you for the fix!

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@colesburycolesburycolesbury approved these changes
@markshannonmarkshannonAwaiting requested review from markshannonmarkshannon is a code owner
@encukouencukouAwaiting requested review from encukou

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