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gh-150114: Reduce memory usage of test_free_threading.test_iteration - #150115

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colesbury:gh-150114-reduce-test-iteration-memory
May 19, 2026
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gh-150114: Reduce memory usage of test_free_threading.test_iteration#150115
colesbury merged 1 commit into
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colesbury:gh-150114-reduce-test-iteration-memory

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@colesbury

@colesburycolesbury commented May 19, 2026•
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Reduce NUMITEMS from 100000 to 5000. Peak RSS for the full test_free_threading suite drops from ~850 MB to ~175 MB.

@colesbury
pythongh-150114: Reduce memory usage of test_free_threading.test_iter…
8a0647f
…ation
Reduce NUMITEMS from 100000 to 5000. Peak RSS for the full
test_free_threading suite drops from ~850 MB to ~175 MB.
@bedevere-appbedevere-appBot mentioned this pull request May 19, 2026
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colesbury marked this pull request as ready for review May 19, 2026 20:41
@zooba

zooba commented May 19, 2026

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There's a resource for tests with lots of memory available that we could probably use here. Let me find a reference for you...

@colesbury

colesbury commented May 19, 2026

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It's much more valuable to have the test run for fewer iterations in the GitHub CI than more iterations behind a memory resource guard.

@zooba

zooba commented May 19, 2026

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Yeah, you're right. Also the test filter has changed since I last looked at it and doesn't really suit this kind of switch so well anymore.

@cmaloney

cmaloney commented May 19, 2026

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In addition to bigmemtest there is also an arbitrary "resource name" system (requires()). but also not well suited. 👍 to just reducing resource usage. Have restarted quite a few jobs with this error in the sprint.

@colesbury
colesbury merged commit 61f1221 into python:mainMay 19, 2026
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@colesburycolesbury added awaiting merge needs backport to 3.14 bugs and security fixes needs backport to 3.15 pre-release feature fixes, bugs and security fixes labels May 19, 2026
@miss-islington-app

miss-islington-appBot commented May 19, 2026

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Thanks @colesbury for the PR 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖

@miss-islington-app

miss-islington-appBot commented May 19, 2026

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Thanks @colesbury for the PR 🌮🎉.. I'm working now to backport this PR to: 3.15.
🐍🍒⛏🤖

@colesbury
colesbury deleted the gh-150114-reduce-test-iteration-memory branch May 19, 2026 21:37
@bedevere-app

bedevere-appBot commented May 19, 2026

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GH-150124 is a backport of this pull request to the 3.15 branch.

@bedevere-app

bedevere-appBot commented May 19, 2026

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GH-150123 is a backport of this pull request to the 3.14 branch.

@bedevere-appbedevere-appBot removed needs backport to 3.15 pre-release feature fixes, bugs and security fixes needs backport to 3.14 bugs and security fixes labels May 19, 2026
colesbury added a commit that referenced this pull request May 19, 2026
@miss-islington@colesbury
[3.14]gh-150114: Reduce memory usage of test_free_threading.test_ite…
dc3a0b4
…ration (gh-150115) (#150123)
Reduce NUMITEMS from 100000 to 5000. Peak RSS for the full
test_free_threading suite drops from ~850 MB to ~175 MB.
(cherry picked from commit 61f1221)
Co-authored-by: Sam Gross <colesbury@gmail.com>
colesbury added a commit that referenced this pull request May 19, 2026
@miss-islington@colesbury
[3.15]gh-150114: Reduce memory usage of test_free_threading.test_ite…
de401ef
…ration (gh-150115) (#150124)
Reduce NUMITEMS from 100000 to 5000. Peak RSS for the full
test_free_threading suite drops from ~850 MB to ~175 MB.
(cherry picked from commit 61f1221)
Co-authored-by: Sam Gross <colesbury@gmail.com>
@hugovkhugovk mentioned this pull request May 20, 2026
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skip newstestsTests in the Lib/test dirtopic-free-threading

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