Issues

• json.dumps() is slower when check_circular=False or ensure_ascii=True

  faster-cpython/ideas#742 · Filter by author vali-fake-account opened on Sep 17, 2026
  5

• remove calls to empty functions

  faster-cpython/ideas#741 · Filter by author vali-fake-account opened on Sep 16, 2026
  2

• AST walk highlights slower yields

  faster-cpython/ideas#740 · Filter by author stuaxo opened on Jun 16, 2026

• Benchmark idea: tinygrad as a "compiler inner loop" workload

  faster-cpython/ideas#739 · Filter by author kimjune01 opened on May 8, 2026
  1

• Optimize multiplication by 1 (especially integers)

  faster-cpython/ideas#737 · Filter by author dg-pb opened on Mar 5, 2026
  1

• Potentially fun/interesting benchmarks (Shed Skin examples), performance comparison

  faster-cpython/ideas#736 · Filter by author srepmub opened on Dec 30, 2025

• JIT should allocate jitted code in the same page when possible

  faster-cpython/ideas#735 · Filter by author Fidget-Spinner opened on Oct 19, 2025

• Optimize dict string keys

  faster-cpython/ideas#734 · Filter by author dg-pb opened on Sep 28, 2025
  1

• C-API Capsule for _asynciomodule.c aka _asyncio and implementing more asyncio objects in CPython

  faster-cpython/ideas#733 · Filter by author Vizonex opened on Aug 20, 2025
  2

• Improve layout of JIT code objects

  faster-cpython/ideas#732 · Filter by author markshannon opened on Jul 30, 2025

• Move collections.deque to a growable ring buffer for fast random access

  faster-cpython/ideas#731 · Filter by author matthiasgoergens opened on Jun 4, 2025
  17

• Unboxed Internal list/tuple/dict/containers representation for use within CPython

  faster-cpython/ideas#729 · Filter by author Fidget-Spinner opened on May 9, 2025
  1

• Supercharging the optimizer DSL

  faster-cpython/ideas#728 · Filter by author Fidget-Spinner opened on Apr 25, 2025
  

• Understand the outlier benchmarks on 3.14 (main) vs. 3.13.0

  faster-cpython/ideas#726 · Filter by author mdboom opened on Apr 24, 2025
  11

• Proposal: Lazy Basic Block Stitching

  faster-cpython/ideas#723 · Filter by author Fidget-Spinner opened on Mar 19, 2025
  2

• Optimise (non?) iteration of empty dicts/collections ?

  faster-cpython/ideas#720 · Filter by author stuaxo opened on Feb 25, 2025
  2

• Faster startup in situations where Python is repeatedly called with the same modules

  faster-cpython/ideas#719 · Filter by author VariantXYZ opened on Feb 6, 2025

• List Growth Factor

  faster-cpython/ideas#718 · Filter by author Zaczero opened on Feb 2, 2025
  1

• Segregating freelists by size, not by type

  faster-cpython/ideas#717 · Filter by author markshannon opened on Jan 28, 2025

• Get rid of "wrapper_descriptors" and "method-wrapper"s

  faster-cpython/ideas#714 · Filter by author markshannon opened on Jan 3, 2025
  1

• The interaction of top-of-stack caching, deferred reference counting and Py_DECREF

  faster-cpython/ideas#711 · Filter by author markshannon opened on Dec 23, 2024

• Simplify adapting pystats

  faster-cpython/ideas#708 · Filter by author mdboom opened on Dec 5, 2024
  4

  

• Measure also PyPy and GraalPy in benchmarking-public ?

  faster-cpython/ideas#705 · Filter by author paugier opened on Nov 15, 2024
  3

  

• Pass a context/token as an argument to all C API functions.

  faster-cpython/ideas#703 · Filter by author markshannon opened on Nov 8, 2024

• Some benchmarks have concerningly high uop miss rates

  investigate
  faster-cpython/ideas#702 · Filter by author brandtbucher opened on Nov 4, 2024
  3