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Issues list

LOAD_FAST_BORROW not being used even when safe to do so, if value is live at BB end. 3.15 new features, bugs and security fixes performance Performance or resource usage
#133672 opened May 8, 2025 by markshannon
2
gh-132380: Use unicode hash/compare for the mcache. awaiting core review performance Performance or resource usage topic-free-threading
#133669 opened May 8, 2025 by nascheme Loading…
5
unittest.mock.patch.object holds references for too long performance Performance or resource usage stdlib Python modules in the Lib dir type-bug An unexpected behavior, bug, or error
#133423 opened May 5, 2025 by ppwwyyxx
7
json: Optimize escaping string in Encoder awaiting core review extension-modules C modules in the Modules dir performance Performance or resource usage skip issue
#133186 opened Apr 30, 2025 by methane Loading…
22
Make the JIT thread-safe interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage topic-free-threading topic-JIT
#133171 opened Apr 29, 2025 by brandtbucher
gh-133059: Increase _PY_NSMALLPOSINTS size awaiting review performance Performance or resource usage
#133160 opened Apr 29, 2025 by dg-pb Loading…
2
Memory keeps increasing with fixed-size dict during multi-threaded set/delete in 3.13.3t interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage topic-free-threading type-bug An unexpected behavior, bug, or error
#133136 opened Apr 29, 2025 by Yiling-J
5
Asyncio BufferedProtocol with SSL is significantly slower than asyncio sockets with SSL performance Performance or resource usage topic-asyncio topic-SSL type-bug An unexpected behavior, bug, or error
#133112 opened Apr 28, 2025 by NoahStapp
Increase _PY_NSMALLPOSINTS size interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage type-feature A feature request or enhancement
#133059 opened Apr 27, 2025 by dg-pb
4
JIT: Optimize common C calls via replication interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage topic-JIT type-feature A feature request or enhancement
#133020 opened Apr 26, 2025 by Fidget-Spinner
4
GC performance regression in free threaded build interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage topic-free-threading type-bug An unexpected behavior, bug, or error
#132917 opened Apr 25, 2025 by gptsarthak
11
copy.copy and copy.deepcopy scale poorly with free-threading performance Performance or resource usage stdlib Python modules in the Lib dir topic-free-threading type-bug An unexpected behavior, bug, or error
#132657 opened Apr 17, 2025 by eendebakpt
3
pathlib.Path.move() consumes too much disk space performance Performance or resource usage stdlib Python modules in the Lib dir topic-pathlib type-bug An unexpected behavior, bug, or error
#132566 opened Apr 15, 2025 by barneygale
2
Use tagged ints for faster iteration interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage type-feature A feature request or enhancement
#132554 opened Apr 15, 2025 by markshannon
3
Use tagged pointers for more efficient integer operations. interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage type-feature A feature request or enhancement
#132509 opened Apr 14, 2025 by markshannon
gh-129210: GC optimisations for case where no objects being collected have finalizers awaiting review performance Performance or resource usage
#132488 opened Apr 14, 2025 by duaneg Loading…
10
Speed up int.__round__ for large negative ndigits interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage type-feature A feature request or enhancement
#132474 opened Apr 13, 2025 by devdanzin
7
gh-132336: Only mark slow path functions used by the interpreter loop as noinline in free-threaded builds awaiting core review interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage skip news topic-free-threading
#132424 opened Apr 12, 2025 by mpage Loading…
2
Lock contention inside _PyType_LookupRef interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage topic-free-threading type-feature A feature request or enhancement
#132380 opened Apr 11, 2025 by nascheme
1
Improve performance in DictConfigurator by optimizing logger lookup performance Performance or resource usage stdlib Python modules in the Lib dir type-feature A feature request or enhancement
#132372 opened Apr 10, 2025 by allrob23
5
Don't inline slow path functions in the interpreter loop interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage type-feature A feature request or enhancement
#132336 opened Apr 9, 2025 by mpage
5
Add a PyThreadState * parameter (almost) everywhere interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage topic-C-API type-feature A feature request or enhancement
#132312 opened Apr 9, 2025 by markshannon
12
Add checking if both strings are the same in SequenceMatcher.find_longest_match performance Performance or resource usage stdlib Python modules in the Lib dir type-feature A feature request or enhancement
#132166 opened Apr 6, 2025 by jurgenwigg
12
Add Buffer Protocol support to int.from_bytes interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage type-feature A feature request or enhancement
#132108 opened Apr 5, 2025 by cmaloney
Optimize class creation interpreter-core (Objects, Python, Grammar, and Parser dirs) performance Performance or resource usage type-feature A feature request or enhancement
#132042 opened Apr 3, 2025 by JelleZijlstra
6
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