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Title: GH-126491: Lower heap size limit with faster marking by markshannon · Pull Request #127519 · python/cpython · GitHub

Open Graph Title: GH-126491: Lower heap size limit with faster marking by markshannon · Pull Request #127519 · python/cpython

X Title: GH-126491: Lower heap size limit with faster marking by markshannon · Pull Request #127519 · python/cpython

Description: With marking added to the cyclic GC (#127110) we spend a lot of the time in the GC forming transitive closures, both for marking and for the increments of the incremental GC. Unfortunately the curr...

Open Graph Description: With marking added to the cyclic GC (#127110) we spend a lot of the time in the GC forming transitive closures, both for marking and for the increments of the incremental GC. Unfortunately the curr...

X Description: With marking added to the cyclic GC (#127110) we spend a lot of the time in the GC forming transitive closures, both for marking and for the increments of the incremental GC. Unfortunately the curr...

Opengraph URL: https://github.com/python/cpython/pull/127519

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Mark all objects reachable from roots as live before doing main cyclic GC pass #126491https://github.com/python/cpython/issues/126491
Please reload this pagehttps://github.com/python/cpython/pull/127519
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November 18, 2024 14:32https://github.com/python/cpython/pull/127519#commits-pushed-3038a78
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Faster marking of reachable objectshttps://github.com/python/cpython/pull/127519/commits/3038a78fc50757dce9ec2ae50a19708a7a9bed42
3038a78https://github.com/python/cpython/pull/127519/commits/3038a78fc50757dce9ec2ae50a19708a7a9bed42
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Handle more classes in fast markinghttps://github.com/python/cpython/pull/127519/commits/c024484826464a563bea4e379f23ad870c3b5c95
c024484https://github.com/python/cpython/pull/127519/commits/c024484826464a563bea4e379f23ad870c3b5c95
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Add support for asyn generators on fast path. Simplify countinghttps://github.com/python/cpython/pull/127519/commits/e8497ae4285efee06ee97bbb02bf851e9d7bfba3
e8497aehttps://github.com/python/cpython/pull/127519/commits/e8497ae4285efee06ee97bbb02bf851e9d7bfba3
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Check stackref before converting to PyObject *https://github.com/python/cpython/pull/127519/commits/4c1a6bcf5e30a4801e4cc6cfb8617fc944f1183b
4c1a6bchttps://github.com/python/cpython/pull/127519/commits/4c1a6bcf5e30a4801e4cc6cfb8617fc944f1183b
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Rename stuffhttps://github.com/python/cpython/pull/127519/commits/6efb4c0e6c0e34e93900c49e622250fdb94b390f
6efb4c0https://github.com/python/cpython/pull/127519/commits/6efb4c0e6c0e34e93900c49e622250fdb94b390f
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Remove expand_region_transitively_reachable and use move_all_transiti…https://github.com/python/cpython/pull/127519/commits/b1c7ab03cbfa590d9bfd344606bf9a19ccac6f84
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Merge branch 'main' into faster-markinghttps://github.com/python/cpython/pull/127519/commits/07f228ba7441d0c832768153ff9c7a0359a1f820
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Dec 2, 2024 https://github.com/python/cpython/pull/127519#ref-issue-2637923216
Mark all objects reachable from roots as live before doing main cyclic GC pass #126491 https://github.com/python/cpython/issues/126491
https://github.com/markshannon
Fix compiler warnings and linkagehttps://github.com/python/cpython/pull/127519/commits/51ff78e646b2f5d17a00464286e7145473d40041
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skip news https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22skip%20news%22
Dec 2, 2024https://github.com/python/cpython/pull/127519#event-15495500839
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December 2, 2024 16:12https://github.com/python/cpython/pull/127519#commits-pushed-df907b5
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Fix another linkage issuehttps://github.com/python/cpython/pull/127519/commits/df907b5b777918bf7233ee310a6d97aa3dd86ff2
df907b5https://github.com/python/cpython/pull/127519/commits/df907b5b777918bf7233ee310a6d97aa3dd86ff2
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Try 'extern'https://github.com/python/cpython/pull/127519/commits/9ca64f55e63e8425fc1075f296ce7dc63918fc62
9ca64f5https://github.com/python/cpython/pull/127519/commits/9ca64f55e63e8425fc1075f296ce7dc63918fc62
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Go back to PyAPI_FUNC and move functions togetherhttps://github.com/python/cpython/pull/127519/commits/bda13f44a28ea175ce6d3fea7f5118007f1298e7
bda13f4https://github.com/python/cpython/pull/127519/commits/bda13f44a28ea175ce6d3fea7f5118007f1298e7
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Use _Py_FALLTHROUGHhttps://github.com/python/cpython/pull/127519/commits/d9d63c8c249d306f3a0892278461985a0bf7061c
d9d63c8https://github.com/python/cpython/pull/127519/commits/d9d63c8c249d306f3a0892278461985a0bf7061c
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Add necessary #ifndef Py_GIL_DISABLEDhttps://github.com/python/cpython/pull/127519/commits/57b8820bd054d74435283277bd81c11e7a446ce5
57b8820https://github.com/python/cpython/pull/127519/commits/57b8820bd054d74435283277bd81c11e7a446ce5
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Go back to using tp_traverse, but make traversal more efficienthttps://github.com/python/cpython/pull/127519/commits/a607059498f74138315ad6d628d9808fedd723b8
a607059https://github.com/python/cpython/pull/127519/commits/a607059498f74138315ad6d628d9808fedd723b8
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Tidy uphttps://github.com/python/cpython/pull/127519/commits/15455081f85f9cf119f439d09fae735636fe011e
1545508https://github.com/python/cpython/pull/127519/commits/15455081f85f9cf119f439d09fae735636fe011e
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A bit more tidying uphttps://github.com/python/cpython/pull/127519/commits/a1a38c8da1e38fdb9392f37462f7f9d440d72ed3
a1a38c8https://github.com/python/cpython/pull/127519/commits/a1a38c8da1e38fdb9392f37462f7f9d440d72ed3
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Move all work to do calculations to one placehttps://github.com/python/cpython/pull/127519/commits/68fc90bb74654f57a1fab692044daeb6f493adfd
68fc90bhttps://github.com/python/cpython/pull/127519/commits/68fc90bb74654f57a1fab692044daeb6f493adfd
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Assume that increments are 50% garbage for work done calculationhttps://github.com/python/cpython/pull/127519/commits/8893cf53bec4645245f11707bc0b11704cb40494
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Dec 3, 2024https://github.com/python/cpython/pull/127519#issuecomment-2515327950
Please reload this pagehttps://github.com/python/cpython/pull/127519
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8893cf5https://github.com/python/cpython/commit/8893cf53bec4645245f11707bc0b11704cb40494
Please reload this pagehttps://github.com/python/cpython/pull/127519
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Dec 3, 2024https://github.com/python/cpython/pull/127519#issuecomment-2515328305
Please reload this pagehttps://github.com/python/cpython/pull/127519
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8893cf5https://github.com/python/cpython/commit/8893cf53bec4645245f11707bc0b11704cb40494
Please reload this pagehttps://github.com/python/cpython/pull/127519
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Elaborate commenthttps://github.com/python/cpython/pull/127519/commits/ba20c7c990ff0dbb6af8ec27b5bb8780015f3edc
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Dec 4, 2024https://github.com/python/cpython/pull/127519#event-15522622311
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Dec 4, 2024 https://github.com/python/cpython/pull/127519#ref-issue-2717419963
Two selective !buildbot commands in quick succession causes ALL buildbots to run python/buildmaster-config#566 https://github.com/python/buildmaster-config/issues/566
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More tweaking of thresholdshttps://github.com/python/cpython/pull/127519/commits/8262bf010f85d3a4338d644513c1613ec8d1771f
8262bf0https://github.com/python/cpython/pull/127519/commits/8262bf010f85d3a4338d644513c1613ec8d1771f
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Dec 4, 2024https://github.com/python/cpython/pull/127519#issuecomment-2517121212
Please reload this pagehttps://github.com/python/cpython/pull/127519
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8262bf0https://github.com/python/cpython/commit/8262bf010f85d3a4338d644513c1613ec8d1771f
Please reload this pagehttps://github.com/python/cpython/pull/127519
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Dec 4, 2024https://github.com/python/cpython/pull/127519#issuecomment-2517500549
Performancehttps://github.com/faster-cpython/benchmarking-public/tree/main/results/bm-20241204-3.14.0a2+-8262bf0
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December 4, 2024 14:03https://github.com/python/cpython/pull/127519#event-15526753732
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December 4, 2024 16:54https://github.com/python/cpython/pull/127519#commits-pushed-3c2116e
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Do some algebrahttps://github.com/python/cpython/pull/127519/commits/3c2116edacadf0a5d81110529edb92459f3733f8
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Revert to 2M+I from 3M+Ihttps://github.com/python/cpython/pull/127519/commits/72d0284492ff0adc8e15e01e8a819853f1d1a85a
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Dec 5, 2024 https://github.com/python/cpython/pull/127519#pullrequestreview-2481131101
View reviewed changes https://github.com/python/cpython/pull/127519/files/72d0284492ff0adc8e15e01e8a819853f1d1a85a
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