[Webkit-unassigned] [Bug 97465] New: test-webkitpy fails on windows when running with more than one child process

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=97465

           Summary: test-webkitpy fails on windows when running with more
                    than one child process
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: lforschler at apple.com


On the mac windows debug test bot, the python tests are constantly failing.

I've noticed that passing in -j 1 (to run with only one child process) seems to fix the issue.  the stack trace is as follows:


$ python ./Tools/Scripts/test-webkitpy -v -j 2
Suppressing most webkitpy logging while running unit tests.
Skipping tests in the following modules or packages because they are really,
lly, slow:
    webkitpy.common.checkout.scm.scm_unittest
    (https://bugs.webkit.org/show_bug.cgi?id=31818; use --all to include)

Running the tests ...Traceback (most recent call last):
  File "/home/buildbot/slave/windows-debug-tests/build/OpenSource/Tools/Scri
webkitpy/test/main.py", line 227, in <module>
    sys.exit(main())
  File "/home/buildbot/slave/windows-debug-tests/build/OpenSource/Tools/Scri
webkitpy/test/main.py", line 69, in main
    return not tester.run()
  File "/home/buildbot/slave/windows-debug-tests/build/OpenSource/Tools/Scri
webkitpy/test/main.py", line 119, in run
    return self._run_tests(names)
  File "/home/buildbot/slave/windows-debug-tests/build/OpenSource/Tools/Scri
webkitpy/test/main.py", line 154, in _run_tests
    test_runner.run(parallel_tests, self._options.child_processes)
  File "/home/buildbot/slave/windows-debug-tests/build/OpenSource/Tools/Scri
webkitpy/test/runner.py", line 52, in run
    with message_pool.get(self, self.worker_factory, num_workers) as pool:
  File "/home/buildbot/slave/windows-debug-tests/build/OpenSource/Tools/Scri
webkitpy/common/message_pool.py", line 61, in get
    return _MessagePool(caller, worker_factory, num_workers, worker_startup_
y_secs, host)
  File "/home/buildbot/slave/windows-debug-tests/build/OpenSource/Tools/Scri
webkitpy/common/message_pool.py", line 79, in __init__
    self._messages_to_worker = multiprocessing.Queue()
  File "/usr/lib/python2.6/multiprocessing/__init__.py", line 213, in Queue
    return Queue(maxsize)
  File "/usr/lib/python2.6/multiprocessing/queues.py", line 37, in __init__
    self._rlock = Lock()
  File "/usr/lib/python2.6/multiprocessing/synchronize.py", line 117, in __i
_
    SemLock.__init__(self, SEMAPHORE, 1, 1)
  File "/usr/lib/python2.6/multiprocessing/synchronize.py", line 49, in __in

    sl = self._semlock = _multiprocessing.SemLock(kind, value, maxvalue)
OSError: [Errno 17] File exists

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.