[issue30849] test_stress_delivery_dependent() of test_signal randomly fails on AMD64 Debian root 3.6/3.x

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

We also got this error randomly on an internal s390x Red Hat build server:

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FAIL: test_stress_delivery_simultaneous (test.test_signal.StressTest)
This test uses simultaneous signal handlers.
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Traceback (most recent call last):
  File "/usr/lib64/python3.9/test/test_signal.py", line 1245, in test_stress_delivery_simultaneous
    self.assertEqual(len(sigs), N, "Some signals were lost")
AssertionError: 5936 != 10000 : Some signals were lost

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<https://bugs.python.org/issue30849>
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