Failure of test_async_timeout() of test_multiprocessing_spawn: TimeoutError not raised

[vstinner]

BPO	19599
Nosy	@vstinner, @koobs
Files	koobs-freebsd9-py27-build116.log koobs-freebsd10-py27-build236.log

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2013-11-22.10:33:41.715>
created_at = <Date 2013-11-15.01:01:20.836>
labels = ['type-bug', 'tests']
title = 'Failure of test_async_timeout() of test_multiprocessing_spawn: TimeoutError not raised'
updated_at = <Date 2013-11-22.10:33:41.714>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2013-11-22.10:33:41.714>
actor = 'sbt'
assignee = 'none'
closed = True
closed_date = <Date 2013-11-22.10:33:41.715>
closer = 'sbt'
components = ['Tests']
creation = <Date 2013-11-15.01:01:20.836>
creator = 'vstinner'
dependencies = []
files = ['32743', '32746']
hgrepos = []
issue_num = 19599
keywords = []
message_count = 9.0
messages = ['202914', '202988', '203204', '203216', '203560', '203563', '203603', '203653', '203726']
nosy_count = 4.0
nosy_names = ['vstinner', 'python-dev', 'sbt', 'koobs']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue19599'
versions = ['Python 2.7', 'Python 3.3', 'Python 3.4']

[vstinner]

http://buildbot.python.org/all/builders/x86%20Windows%20Server%202003%20%5BSB%5D%203.x/builds/1716/steps/test/logs/stdio
and
http://buildbot.python.org/all/builders/x86%20Windows7%203.x/builds/7529/steps/test/logs/stdio

======================================================================
FAIL: test_async_timeout (test.test_multiprocessing_spawn.WithManagerTestPool)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "E:\Data\buildslave\cpython\3.x.snakebite-win2k3r2sp2-x86\build\lib\test\_test_multiprocessing.py", line 1726, in test_async_timeout
    self.assertRaises(multiprocessing.TimeoutError, get, timeout=TIMEOUT2)
AssertionError: TimeoutError not raised by <test._test_multiprocessing.TimingWrapper object at 0x09FE0930>

[vstinner]

Seen on another buildbot.

http://buildbot.python.org/all/builders/AMD64%20OpenIndiana%203.x/builds/6809/steps/test/logs/stdio

======================================================================
FAIL: test_async_timeout (test.test_multiprocessing_fork.WithProcessesTestPool)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "/export/home/buildbot/64bits/3.x.cea-indiana-amd64/build/Lib/test/_test_multiprocessing.py", line 1726, in test_async_timeout
    self.assertRaises(multiprocessing.TimeoutError, get, timeout=TIMEOUT2)
AssertionError: TimeoutError not raised by <test._test_multiprocessing.TimingWrapper object at 0xffffdd7ffda3be90>

[python-dev]

New changeset ba7d53b5f3de by Richard Oudkerk in branch '2.7':
Issue bpo-19599: Increase sleep period.
http://hg.python.org/cpython/rev/ba7d53b5f3de

New changeset 7d6a9e7060c7 by Richard Oudkerk in branch '3.3':
Issue bpo-19599: Increase sleep period.
http://hg.python.org/cpython/rev/7d6a9e7060c7

[sbt]

Hopefully the applied change will fix failure (or at least make this much less likey).

[koobs]

2.7 builds are failing on koobs-freebsd9 buildbot since ba7d53b5f3de

------------------------

test_multiprocessing
[74777 refs]
test test_multiprocessing failed -- Traceback (most recent call last):
  File "/usr/home/buildbot/python/2.7.koobs-freebsd9/build/Lib/test/test_multiprocessing.py", line 1194, in test_terminate
    self.assertTrue(join.elapsed < 0.2)
AssertionError: False is not true
<snip>
1 test failed:
    test_multiprocessing

---

Full log of build #116 attached.

[koobs]

koobs-freebsd10 (2.7) is also seeing identical test failures since the change (slightly more intermittent than freebsd9)

Is the increased sleep period now bumping against a test timing threshold (0.2) ?

======================================================================
FAIL: test_terminate (test.test_multiprocessing.WithThreadsTestPool)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "/usr/home/buildbot/koobs-freebsd10/2.7.koobs-freebsd10/build/Lib/test/test_multiprocessing.py", line 1194, in test_terminate
    self.assertTrue(join.elapsed < 0.2)
AssertionError: False is not true

---

Full build log of #236 attached

Adding 3.3 and 2.7 to versions since changes were backported

[vstinner]

2.7 builds are failing on koobs-freebsd9 buildbot since ba7d53b5f3de

I reopen the issue.

[python-dev]

New changeset 086865ceefe1 by Richard Oudkerk in branch '2.7':
Issue bpo-19599: Use a separate pool for test_terminate().
http://hg.python.org/cpython/rev/086865ceefe1

[koobs]

@richard, reporting all green on koobs-freebsd{9,10} 2.7 since 086865ceefe1

Thank you! :)