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gh-129441: Fix some flakiness in test_instrumentation - #141881

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Nov 24, 2025
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gh-129441: Fix some flakiness in test_instrumentation#141881
colesbury merged 1 commit into
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colesbury:gh-129441-test_instrumentation

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@colesburycolesbury commented Nov 23, 2025•
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Most of the self.assertTrue(self.called) checks are flaky because the worker threads may sometimes finish before the main thread calls self.during_threads().

@colesbury
pythongh-129441: Fix some flakiness in test_instrumentation
dffc16c
Most of the `self.assertTrue(self.called)` checks are flaky because
the worker threads may sometimes finish before the main thread calls
`self.during_threads()`.
@colesburycolesbury added tests Tests in the Lib/test dir needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes labels Nov 23, 2025
@bedevere-appbedevere-appBot mentioned this pull request Nov 23, 2025
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@colesburycolesbury added skip news 🔨 test-with-refleak-buildbots Test PR w/ refleak buildbots; report in status section labels Nov 23, 2025
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🤖 New build scheduled with the buildbot fleet by @colesbury for commit dffc16c 🤖

Results will be shown at:

https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F141881%2Fmerge

If you want to schedule another build, you need to add the 🔨 test-with-refleak-buildbots label again.

@bedevere-botbedevere-bot removed the 🔨 test-with-refleak-buildbots Test PR w/ refleak buildbots; report in status section label Nov 23, 2025
@colesbury
colesbury marked this pull request as ready for review November 23, 2025 18:20
vstinner
vstinner approved these changes Nov 24, 2025
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LGTM. Replacing time.sleep(0.1) with Barrier is a nice fix: sleep() is not a reliable synchronization method. With Barrier, self.called becomes redundant and so can be removed.

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vstinner commented Nov 24, 2025

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buildbot/AMD64 Windows11 Refleaks PR

Unrelated failure:

ERROR: test_sample_target_module (test.test_profiling.test_sampling_profiler.test_integration.TestSampleProfilerIntegration.test_sample_target_module)

@colesbury
colesbury merged commit 71126ab into python:mainNov 24, 2025
72 of 73 checks passed
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colesbury deleted the gh-129441-test_instrumentation branch November 24, 2025 16:19
@miss-islington-app

miss-islington-appBot commented Nov 24, 2025

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Thanks @colesbury for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14.
🐍🍒⛏🤖

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Nov 24, 2025
@colesbury@miss-islington
pythongh-129441: Fix some flakiness in test_instrumentation (pythongh…
4b99752
…-141881)
Most of the `self.assertTrue(self.called)` checks are flaky because
the worker threads may sometimes finish before the main thread calls
`self.during_threads()`.
(cherry picked from commit 71126ab)
Co-authored-by: Sam Gross <colesbury@gmail.com>
@bedevere-app

bedevere-appBot commented Nov 24, 2025

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GH-141913 is a backport of this pull request to the 3.14 branch.

@bedevere-appbedevere-appBot removed the needs backport to 3.14 bugs and security fixes label Nov 24, 2025
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Nov 24, 2025
@colesbury@miss-islington
pythongh-129441: Fix some flakiness in test_instrumentation (pythongh…
b29412c
…-141881)
Most of the `self.assertTrue(self.called)` checks are flaky because
the worker threads may sometimes finish before the main thread calls
`self.during_threads()`.
(cherry picked from commit 71126ab)
Co-authored-by: Sam Gross <colesbury@gmail.com>
@bedevere-app

bedevere-appBot commented Nov 24, 2025

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GH-141914 is a backport of this pull request to the 3.13 branch.

@bedevere-appbedevere-appBot removed the needs backport to 3.13 bugs and security fixes label Nov 24, 2025
colesbury added a commit that referenced this pull request Nov 24, 2025
@miss-islington@colesbury
[3.14]gh-129441: Fix some flakiness in test_instrumentation (gh-141881…
f8b0c90
…) (gh-141913)
Most of the `self.assertTrue(self.called)` checks are flaky because
the worker threads may sometimes finish before the main thread calls
`self.during_threads()`.
(cherry picked from commit 71126ab)
Co-authored-by: Sam Gross <colesbury@gmail.com>
colesbury added a commit that referenced this pull request Nov 24, 2025
@miss-islington@colesbury
[3.13]gh-129441: Fix some flakiness in test_instrumentation (gh-141881…
9127013
…) (gh-141914)
Most of the `self.assertTrue(self.called)` checks are flaky because
the worker threads may sometimes finish before the main thread calls
`self.during_threads()`.
(cherry picked from commit 71126ab)
Co-authored-by: Sam Gross <colesbury@gmail.com>
StanFromIreland pushed a commit to StanFromIreland/cpython that referenced this pull request Dec 6, 2025
@colesbury@StanFromIreland
pythongh-129441: Fix some flakiness in test_instrumentation (pythongh…
bec5c23
…-141881)
Most of the `self.assertTrue(self.called)` checks are flaky because
the worker threads may sometimes finish before the main thread calls
`self.during_threads()`.
ashm-dev pushed a commit to ashm-dev/cpython that referenced this pull request Dec 8, 2025
@colesbury@ashm-dev
pythongh-129441: Fix some flakiness in test_instrumentation (pythongh…
e34c226
…-141881)
Most of the `self.assertTrue(self.called)` checks are flaky because
the worker threads may sometimes finish before the main thread calls
`self.during_threads()`.
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