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Sat Mar 28 17:40:37 CET 2015 · https://mail.python.org/pipermail/python-dev/2015-March/138944.html

On 28.03.15 11:39, Victor Stinner wrote:
> Can you please take a look at the following issue and try to reproduce it?
> http://bugs.python.org/issue23771
>
> The following tests sometimes hang on "x86 Ubuntu Shared 3.x" and
> "AMD64 Debian root 3.x" buildbots:
>
> - test_notify_all() of test_multiprocessing_spawn
> - test_double_close_on_error() of test_subprocess
> - other sporadic failures of test_subprocess
>
> I'm quite sure that they are regressions, maybe related to the
> implementation of the PEP 475. In the middle of all PEP 475 changes, I
> changed some functions to release the GIL on I/O, it wasn't the case
> before. I may be related.
>
> Are you able to reproduce these issues? I'm unable to reproduce them
> on Fedora 21. Maybe they are more likely on Debian-like operating
> systems?

Just run tests with low memory limit.

(ulimit -v 60000; ./python -m test.regrtest -uall -v 
test_multiprocessing_spawn;)

test_io also hangs.

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Showing content from https://mail.python.org/pipermail/python-dev/2015-March/138944.html below:

[Python-Dev] Sporadic failures of test_subprocess and test_multiprocessing_spawn