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GeezerVison is showing github.com — gh-144914: use `mimalloc` for raw allocations on free-threading by kumaraditya303 · Pull Request #144916 · python/cpython

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@kumaraditya303

@kumaraditya303 kumaraditya303 commented Feb 17, 2026 •
edited by bedevere-app Bot
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  • Issue: use mimalloc as raw memory allocator in free-threading #144914

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@kumaraditya303
use mimalloc for raw allocations
734455f
@bedevere-app bedevere-app Bot mentioned this pull request Feb 17, 2026
use mimalloc as raw memory allocator in free-threading #144914
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@kumaraditya303 kumaraditya303 mentioned this pull request Feb 17, 2026
BUG: Multithreaded scaling bottlenecks on free-threaded Python numpy/numpy#30494
Closed
kumaraditya303 added 3 commits February 17, 2026 19:37
@kumaraditya303
add ctx
423dc48
@kumaraditya303
fix test
4ab697c
@kumaraditya303
fix macro redefinition
40c33a5
@kumaraditya303
kumaraditya303 requested a review from colesbury February 17, 2026 18:24
@kumaraditya303
kumaraditya303 marked this pull request as ready for review February 17, 2026 18:24
@kumaraditya303
kumaraditya303 requested a review from ericsnowcurrently as a code owner February 17, 2026 18:24
@kumaraditya303
Merge branch 'main' into mimalloc
04d2fb7
@bedevere-app bedevere-app Bot added the awaiting core review label Feb 17, 2026
blurb-it Bot and others added 2 commits February 17, 2026 18:27
@blurb-it
📜🤖 Added by blurb_it.
0ce845d
@kumaraditya303
fix news
5bd4c3d
@kumaraditya303 kumaraditya303 added performance Performance or resource usage topic-free-threading labels Feb 17, 2026
@colesbury

colesbury commented Feb 17, 2026

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Should this be added to the 3.15 "What's New"?
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colesbury
colesbury approved these changes Feb 17, 2026
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@bedevere-app bedevere-app Bot added awaiting merge and removed awaiting core review labels Feb 17, 2026
@kumaraditya303
add whatsnew entry
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@kumaraditya303
kumaraditya303 requested a review from AA-Turner as a code owner February 18, 2026 03:49
@kumaraditya303

kumaraditya303 commented Feb 18, 2026

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Should this be added to the 3.15 "What's New"?

I've added what's new entry now.
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@kumaraditya303
kumaraditya303 enabled auto-merge (squash) February 18, 2026 03:54
@kumaraditya303
kumaraditya303 merged commit 836f2c9 into python:main Feb 18, 2026
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@bedevere-app bedevere-app Bot removed the awaiting merge label Feb 18, 2026
@kumaraditya303
kumaraditya303 deleted the mimalloc branch February 18, 2026 04:17
brijkapadia pushed a commit to brijkapadia/cpython that referenced this pull request Feb 28, 2026
@kumaraditya303 @brijkapadia
pythongh-144914: use mimalloc for raw allocations on free-threading (…
839d770 
…python#144916)
ljfp pushed a commit to ljfp/cpython that referenced this pull request Apr 25, 2026
@kumaraditya303 @ljfp
pythongh-144914: use mimalloc for raw allocations on free-threading (…
06f911d 
…python#144916)
@kumaraditya303 kumaraditya303 mentioned this pull request Jul 17, 2026
ENH: use Python raw memory allocators instead of system allocator scipy/scipy#25648
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@colesbury colesbury colesbury approved these changes
@ericsnowcurrently ericsnowcurrently Awaiting requested review from ericsnowcurrently ericsnowcurrently is a code owner
@AA-Turner AA-Turner Awaiting requested review from AA-Turner AA-Turner is a code owner

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@kumaraditya303 @colesbury
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