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Issues: python/cpython

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Issues list

Eliminate redundant refcounting in the JIT interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-JIT type-featureA feature request or enhancement
#134584 openedMay 23, 2025 byFidget-Spinner
Performance issue with ARM64 windows Python release binaries OS-windows pendingThe issue will be closed if no feedback is provided performancePerformance or resource usage triagedThe issue has been accepted as valid by a triager.
#134524 openedMay 22, 2025 byAkash9824
use stackrefs in_PyObject_GetMethod and calling APIs interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading type-featureA feature request or enhancement
#134043 openedMay 15, 2025 bykumaraditya303
@kumaraditya303
Using the public PyUnicodeWriter C API made the json module slower extension-modulesC modules in the Modules dir performancePerformance or resource usage stdlibPython modules in the Lib dir type-bugAn unexpected behavior, bug, or error
#133968 openedMay 13, 2025 byvstinner
LOAD_FAST_BORROW not being used even when safe to do so, if value is live at BB end. 3.15new features, bugs and security fixes performancePerformance or resource usage
#133672 openedMay 8, 2025 bymarkshannon
unittest.mock.patch.object holds references for too long performancePerformance or resource usage stdlibPython modules in the Lib dir type-bugAn unexpected behavior, bug, or error
#133423 openedMay 5, 2025 byppwwyyxx
json: Optimize escaping string in Encoder awaiting core review extension-modulesC modules in the Modules dir performancePerformance or resource usage skip issue
#133186 openedApr 30, 2025 bymethaneLoading…
Make the JIT thread-safe interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading topic-JIT
#133171 openedApr 29, 2025 bybrandtbucher
7 tasks
@diegorusso@tomasr8
gh-133059: Increase _PY_NSMALLPOSINTS size awaiting review performancePerformance or resource usage
#133160 openedApr 29, 2025 bydg-pbLoading…
Memory keeps increasing with fixed-size dict during multi-threaded set/delete in 3.13.3t interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading type-bugAn unexpected behavior, bug, or error
#133136 openedApr 29, 2025 byYiling-J
Increase _PY_NSMALLPOSINTS size interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage type-featureA feature request or enhancement
#133059 openedApr 27, 2025 bydg-pb
JIT: Optimize common C calls via replication interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-JIT type-featureA feature request or enhancement
#133020 openedApr 26, 2025 byFidget-Spinner
GC performance regression in free threaded build interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading type-bugAn unexpected behavior, bug, or error
#132917 openedApr 25, 2025 bygptsarthak
copy.copy and copy.deepcopy scale poorly with free-threading performancePerformance or resource usage stdlibPython modules in the Lib dir topic-free-threading type-bugAn unexpected behavior, bug, or error
#132657 openedApr 17, 2025 byeendebakpt
pathlib.Path.move() consumes too much disk space performancePerformance or resource usage stdlibPython modules in the Lib dir topic-pathlib type-bugAn unexpected behavior, bug, or error
#132566 openedApr 15, 2025 bybarneygale
Use tagged ints for faster iteration interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage type-featureA feature request or enhancement
#132554 openedApr 15, 2025 bymarkshannon
Use tagged pointers for more efficient integer operations. interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage type-featureA feature request or enhancement
#132509 openedApr 14, 2025 bymarkshannon
Speed upint.__round__ for large negativendigits interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage type-featureA feature request or enhancement
#132474 openedApr 13, 2025 bydevdanzin
Lock contention inside_PyType_LookupRef interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading type-featureA feature request or enhancement
#132380 openedApr 11, 2025 bynascheme
Improve performance in DictConfigurator by optimizing logger lookup performancePerformance or resource usage stdlibPython modules in the Lib dir type-featureA feature request or enhancement
#132372 openedApr 10, 2025 byallrob23
Don't inline slow path functions in the interpreter loop interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage type-featureA feature request or enhancement
#132336 openedApr 9, 2025 bympage
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