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1. Commits on Apr 29, 2026

   • [3.14] GH-148726: Add heap_size to _gc_runtime_state (#149025)

     sergey-miryanov

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2. Commits on Apr 26, 2026

   • [3.14] GH-148726: Forward-port generational GC (#148720)

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3. Commits on Mar 12, 2026

   • [3.14] GH-91636: Clear weakrefs created by finalizers. (GH-136401) (#144444)

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     sergey-miryanov

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     nascheme

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4. Commits on Dec 1, 2025

   • [3.14] Revert "GH-91636: Clear weakrefs created by finalizers. (GH-136401) (#141993)" (#142152)

     hugovk

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5. Commits on Nov 29, 2025

   • [3.14] GH-91636: Clear weakrefs created by finalizers. (GH-136401) (#141993)

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     miss-islington

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     nascheme

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     fed2af6View commit details

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6. Commits on Oct 27, 2025

   • [3.14] gh-140358: Bring back elapsed time and unreachable count to gc debug output (GH-140359) (#140405)

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     miss-islington

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     pgdr

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7. Commits on Oct 23, 2025

   • [3.14] GH-139951: Fix major GC performance regression. Backport of GH-140262 (GH-140447)

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     markshannon

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8. Commits on Jul 11, 2025

   • [3.14] gh-136517: Print uncollectable objects if DEBUG_UNCOLLECTABLE mode was set (GH-136518) (#136522)

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     miss-islington

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     sergey-miryanov

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9. Commits on May 5, 2025

   • GH-133261: Make sure that the GC doesn't untrack objects in trashcan (GH-133431)

     markshannon

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10. Commits on Apr 30, 2025

    • GH-124715: Move trashcan mechanism into `Py_Dealloc` (GH-132280)

      markshannon

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11. Commits on Apr 29, 2025

    • GH-132508: Use tagged integers on the evaluation stack for the last instruction offset (GH-132545)

      markshannon

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12. Commits on Apr 1, 2025

    • gh-130704: Strength reduce `LOAD_FAST{_LOAD_FAST}` (#130708)

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      mpage

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13. Commits on Mar 28, 2025

    • gh-131740: minor readability fix in PyUnstable_GC_VisitObjects (gh-131786)

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      martindemello

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14. Commits on Mar 26, 2025

    • gh-131740: Update PyUnstable_GC_VisitObjects to traverse perm gen (gh-131744)

      corona10

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15. Commits on Mar 20, 2025

    • gh-131238: Remove includes from pycore_interp.h (#131495)

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      vstinner

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16. Commits on Mar 19, 2025

    • gh-131238: Remove many includes from pycore_interp.h (#131472)

      vstinner

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17. Commits on Mar 10, 2025

    • GH-127705: Use `_PyStackRef`s in the default build. (GH-127875)

      markshannon

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18. Commits on Feb 13, 2025

    • gh-130019: Fix data race in _PyType_AllocNoTrack (gh-130058)

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      colesbury

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      0559339View commit details

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19. Commits on Feb 12, 2025

    • GH-128682: Account for escapes in `DECREF_INPUTS` (GH-129953)

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      markshannon

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20. Commits on Jan 31, 2025

    • gh-129354: Use PyErr_FormatUnraisable() function (#129514)

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      vstinner

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    • gh-129354: Fix grammar in PyErr_FormatUnraisable() (#129475)

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      vstinner

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21. Commits on Jan 21, 2025

    • GH-128563: Add new frame owner type for interpreter entry frames (GH-129078)

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      markshannon

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22. Commits on Dec 10, 2024

    • gh-126491: Revert "GH-126491: Lower heap size limit with faster marking (GH-127519)" (GH-127770)

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      encukou

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23. Commits on Dec 6, 2024

    • GH-126491: Lower heap size limit with faster marking (GH-127519)

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      markshannon

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24. Commits on Dec 2, 2024

    • GH-126491: GC: Mark objects reachable from roots before doing cycle collection (GH-127110)

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      markshannon

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25. Commits on Nov 20, 2024

    • GH-127010: Don't lazily track and untrack dicts (GH-127027)

      markshannon

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26. Commits on Nov 19, 2024

    • GH-124567: Replace quadratic assert with linear one (GH-127009)

      markshannon

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    • Revert "GH-126491: GC: Mark objects reachable from roots before doing cycle collection (GH-126502)" (#126983)

      hugovk

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27. Commits on Nov 18, 2024

    • GH-126491: GC: Mark objects reachable from roots before doing cycle collection (GH-126502)

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      markshannon

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28. Commits on Nov 15, 2024

    • GH-124567: Reduce overhead of debug build for GC. Should help CI performance (GH-126777)

      markshannon

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29. Commits on Sep 27, 2024

    • gh-116510: Fix crash during sub-interpreter shutdown (gh-124645)

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      nascheme

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30. Commits on Sep 12, 2024

    • gh-123923: Defer refcounting for `f_executable` in `_PyInterpreterFrame` (#123924)

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      colesbury

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31. Commits on Aug 27, 2024

    • GH-117759: Document incremental GC (GH-123266)

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      markshannon

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32. Commits on Aug 23, 2024

    • GH-122298: Restore printing of GC stats (GH-123261)

      markshannon

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33. Commits on Aug 21, 2024

    • GH-115776: Allow any fixed sized object to have inline values (GH-123192)

      markshannon

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