Message 337081 - Python tracker

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Author	vstinner
Recipients	koobs, pablogsal, pitrou, scotchka, vstinner
Date	2019-03-04.08:57:43
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1551689863.5.0.53743473519.issue36114@roundup.psfhosted.org>
In-reply-to

Content
I recently (Feb 25) fixed the config of this slow buildbot to change the timeout from 15 min to 20 min: https://github.com/python/buildmaster-config/commit/37cf09ca9a5b6ce14b4e9b481101d559c4e55485 https://github.com/python/buildmaster-config/commit/e4155a744819acdbe7ada03b12116f7c147a9166 It seems like there is a correlation between this buildbot config change and the buildbot starting to create a coredump file. The test started to create a core dump around build 624, Feb 25. -- With coredump. Warning -- files was modified by test_multiprocessing_spawn: https://buildbot.python.org/all/#/builders/168/builds/624 # 625 was fine https://buildbot.python.org/all/#/builders/168/builds/626 https://buildbot.python.org/all/#/builders/168/builds/628 https://buildbot.python.org/all/#/builders/168/builds/629 https://buildbot.python.org/all/#/builders/168/builds/630 https://buildbot.python.org/all/#/builders/168/builds/631 -- Without coredump: fail but no coredump. ERROR: test_shared_memory_SharedMemoryManager_basics (test.test_multiprocessing_forkserver.WithProcessesTestSharedMemory) ERROR: test_shared_memory_across_processes (test.test_multiprocessing_forkserver.WithProcessesTestSharedMemory) ERROR: test_shared_memory_basics (test.test_multiprocessing_forkserver.WithProcessesTestSharedMemory) ERROR: test_shared_memory_ShareableList_basics (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory) ERROR: test_shared_memory_ShareableList_pickling (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory) ERROR: test_shared_memory_SharedMemoryManager_basics (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory) ERROR: test_shared_memory_across_processes (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory) ERROR: test_shared_memory_basics (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory) ERROR: test_shared_memory_ShareableList_basics (test.test_multiprocessing_fork.WithProcessesTestSharedMemory) ERROR: test_shared_memory_ShareableList_pickling (test.test_multiprocessing_fork.WithProcessesTestSharedMemory) ERROR: test_shared_memory_SharedMemoryManager_basics (test.test_multiprocessing_fork.WithProcessesTestSharedMemory) ERROR: test_shared_memory_across_processes (test.test_multiprocessing_fork.WithProcessesTestSharedMemory) ERROR: test_shared_memory_basics (test.test_multiprocessing_fork.WithProcessesTestSharedMemory) Re-running failed tests in verbose mode https://buildbot.python.org/all/#/builders/168/builds/617 https://buildbot.python.org/all/#/builders/168/builds/618 https://buildbot.python.org/all/#/builders/168/builds/620 https://buildbot.python.org/all/#/builders/168/builds/622 https://buildbot.python.org/all/#/builders/168/builds/623

I recently (Feb 25) fixed the config of this slow buildbot to change the timeout from 15 min to 20 min:

https://github.com/python/buildmaster-config/commit/37cf09ca9a5b6ce14b4e9b481101d559c4e55485
https://github.com/python/buildmaster-config/commit/e4155a744819acdbe7ada03b12116f7c147a9166

It seems like there is a correlation between this buildbot config change and the buildbot starting to create a coredump file. The test started to create a core dump around build 624, Feb 25.

--

With coredump.

Warning -- files was modified by test_multiprocessing_spawn:

https://buildbot.python.org/all/#/builders/168/builds/624
# 625 was fine
https://buildbot.python.org/all/#/builders/168/builds/626
https://buildbot.python.org/all/#/builders/168/builds/628
https://buildbot.python.org/all/#/builders/168/builds/629
https://buildbot.python.org/all/#/builders/168/builds/630
https://buildbot.python.org/all/#/builders/168/builds/631

--

Without coredump: fail but no coredump.

ERROR: test_shared_memory_SharedMemoryManager_basics (test.test_multiprocessing_forkserver.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_across_processes (test.test_multiprocessing_forkserver.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_basics (test.test_multiprocessing_forkserver.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_ShareableList_basics (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_ShareableList_pickling (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_SharedMemoryManager_basics (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_across_processes (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_basics (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_ShareableList_basics (test.test_multiprocessing_fork.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_ShareableList_pickling (test.test_multiprocessing_fork.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_SharedMemoryManager_basics (test.test_multiprocessing_fork.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_across_processes (test.test_multiprocessing_fork.WithProcessesTestSharedMemory)
ERROR: test_shared_memory_basics (test.test_multiprocessing_fork.WithProcessesTestSharedMemory)
Re-running failed tests in verbose mode

https://buildbot.python.org/all/#/builders/168/builds/617
https://buildbot.python.org/all/#/builders/168/builds/618
https://buildbot.python.org/all/#/builders/168/builds/620
https://buildbot.python.org/all/#/builders/168/builds/622
https://buildbot.python.org/all/#/builders/168/builds/623

History
Date	User	Action	Args
2019-03-04 08:57:43	vstinner	set	recipients: + vstinner, pitrou, koobs, pablogsal, scotchka
2019-03-04 08:57:43	vstinner	set	messageid: <1551689863.5.0.53743473519.issue36114@roundup.psfhosted.org>
2019-03-04 08:57:43	vstinner	link	issue36114 messages
2019-03-04 08:57:43	vstinner	create