Issue 20114: Sporadic failure of test_semaphore_tracker() of test_multiprocessing_forkserver on FreeBSD 9 buildbot (original) (raw)

This issue has been migrated to GitHub: https://github.com/python/cpython/issues/64313

classification

process

Created on 2014-01-03 12:17 by vstinner, last changed 2022-04-11 14:57 by admin. This issue is now closed.

Messages (6)
msg207223 - (view)	Author: STINNER Victor (vstinner) *	Date: 2014-01-03 12:17
http://buildbot.python.org/all/builders/AMD64%20FreeBSD%209.0%203.x/builds/6085/steps/test/logs/stdio ====================================================================== FAIL: test_semaphore_tracker (test.test_multiprocessing_forkserver.TestSemaphoreTracker) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/home/buildbot/buildarea/3.x.krah-freebsd/build/Lib/test/_test_multiprocessing.py", line 3661, in test_semaphore_tracker _multiprocessing.sem_unlink(name2) AssertionError: OSError not raised
msg207235 - (view)	Author: Richard Oudkerk (sbt) *	Date: 2014-01-03 19:25
How often has this happened? If the machine was very loaded then maybe the timeout was not enough time for the semaphore to be cleaned up by the tracker process. But I would expect 1 second to be more than ample.
msg207249 - (view)	Author: Stefan Krah (skrah) *	Date: 2014-01-03 21:52
The machine has a high load: 6 processes at 100% CPU, one of which is the FreeBSD virtual machine.
msg207288 - (view)	Author: Richard Oudkerk (sbt) *	Date: 2014-01-04 15:19
It is probably harmless then. I don't think increasing the timeout is necessary -- the multiprocessing tests already take a long time.
msg211835 - (view)	Author: STINNER Victor (vstinner) *	Date: 2014-02-21 09:17
> It is probably harmless then. It makes the buildbot red :-( I would like to see green buildbots :-) Similar failure on the buildbot "SPARC Solaris 10 OpenCSW 3.x". A build takes between 9 and 10 hours on this buildbot. http://buildbot.python.org/all/builders/SPARC%20Solaris%2010%20OpenCSW%203.x/builds/821/steps/test/logs/stdio ====================================================================== FAIL: test_semaphore_tracker (test.test_multiprocessing_fork.TestSemaphoreTracker) ---------------------------------------------------------------------- Traceback (most recent call last): File "/export/home/buildbot/buildarea/3.x.bruynooghe-solaris-csw/build/Lib/test/_test_multiprocessing.py", line 3656, in test_semaphore_tracker _multiprocessing.sem_unlink(name2) AssertionError: OSError not raised
msg211881 - (view)	Author: Roundup Robot (python-dev)	Date: 2014-02-21 22:31
New changeset 5057eaff9d68 by Richard Oudkerk in branch 'default': Issue #20114: Double timeout in test_semaphore_tracker() to reduce http://hg.python.org/cpython/rev/5057eaff9d68