[issue40590] test_subprocess stuck on Windows, x64

[Terry J. Reedy]

Terry J. Reedy  added the comment:

CI now passes.

--
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed
type:  -> behavior

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[issue40590] test_subprocess stuck on Windows, x64

[Terry J. Reedy]

Terry J. Reedy  added the comment:

python -m test.testsubprocessing on my Win 10-64 with repository 3.9.0a6+, 
without your patch, produces

minkernel\crts\ucrt\src\appcrt\lowio\write.cpp(49) : Assertion failed: 
(_osfile(fh) & FOPEN)
minkernel\crts\ucrt\src\appcrt\lowio\close.cpp(49) : Assertion failed: 
(_osfile(fh) & FOPEN)
.minkernel\crts\ucrt\src\appcrt\lowio\close.cpp(49) : Assertion failed: 
(_osfile(fh) & FOPEN)

followed by

Ran 313 tests in 43.808s
OK (skipped=180)

Since, I presume, you are not working on Windows, I made a PR branch, 
recompiled, and reran test_subprocess.  Same result.  So I triggered a rerun in 
case the error was an oddball or in case cpython has changed.

Did not work.  Try close and re-open instead.  Appears to be working better.

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nosy: +terry.reedy

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[issue40590] test_subprocess stuck on Windows, x64

[Dima Tisnek]

New submission from Dima Tisnek :

The windows test got stuck in my PR, and I'm pretty sure my change is not to 
blame.

The test log looks like this:

0:11:10 load avg: 6.42 [421/423] test_importlib passed
0:11:40 load avg: 5.40 running: test_subprocess (58.5 sec), 
test_multiprocessing_spawn (53.0 sec)
0:12:10 load avg: 5.48 running: test_subprocess (1 min 28 sec), 
test_multiprocessing_spawn (1 min 23 sec)
0:12:40 load avg: 5.44 running: test_subprocess (1 min 58 sec), 
test_multiprocessing_spawn (1 min 53 sec)
0:12:57 load avg: 4.58 [422/423] test_multiprocessing_spawn passed (2 min 10 
sec) -- running: test_subprocess (2 min 16 sec)
0:13:27 load avg: 2.89 running: test_subprocess (2 min 46 sec)
0:13:57 load avg: 2.11 running: test_subprocess (3 min 16 sec)
0:14:27 load avg: 1.54 running: test_subprocess (3 min 46 sec)
...
5:53:33 load avg: 0.48 running: test_subprocess (5 hour 42 min)
5:54:03 load avg: 0.51 running: test_subprocess (5 hour 43 min)
5:54:33 load avg: 0.31 running: test_subprocess (5 hour 43 min)
Terminate batch job (Y/N)? 

https://github.com/python/cpython/pull/19402/checks?check_run_id=658308339

--
components: Tests
messages: 368614
nosy: Dima.Tisnek, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: test_subprocess stuck on Windows, x64
versions: Python 3.9

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