Re: [Python-Dev] Sporadic failures of test_subprocess and test_multiprocessing_spawn

2015-03-29 Thread Victor Stinner
Hi Serhiy, 2015-03-28 17:40 GMT+01:00 Serhiy Storchaka : > Just run tests with low memory limit. > > (ulimit -v 6; ./python -m test.regrtest -uall -v > test_multiprocessing_spawn;) > > test_io also hangs. I confirm that some tests using threads hang under very low memory condition. At bootstr

Re: [Python-Dev] Sporadic failures of test_subprocess and test_multiprocessing_spawn

2015-03-29 Thread Victor Stinner
Hi, 2015-03-28 12:26 GMT+01:00 Chris Angelico : > It seems to be stalling out. I'm not sure exactly what's happening > here. Running just that one file doesn't do it, but running the full > test suite results in a stall. Ok, I reproduced the issue on David's buildbot. A (child) process was stuck

Re: [Python-Dev] Sporadic failures of test_subprocess and test_multiprocessing_spawn

2015-03-28 Thread Serhiy Storchaka
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_

Re: [Python-Dev] Sporadic failures of test_subprocess and test_multiprocessing_spawn

2015-03-28 Thread Chris Angelico
On Sat, Mar 28, 2015 at 11:50 PM, Victor Stinner wrote: > Good, you are able to reproduce it. The next step is to identify the > sequence of test to reproduce it. How do you run the test suite? Are you > using -j1? I just ran 'make test'. Early in the output are these lines: ./python ./Tools/sc

Re: [Python-Dev] Sporadic failures of test_subprocess and test_multiprocessing_spawn

2015-03-28 Thread Victor Stinner
Good, you are able to reproduce it. The next step is to identify the sequence of test to reproduce it. How do you run the test suite? Are you using -j1? Victor Le samedi 28 mars 2015, Chris Angelico a écrit : > On Sat, Mar 28, 2015 at 9:10 PM, Chris Angelico > wrote: > > On Sat, Mar 28, 2015 a

Re: [Python-Dev] Sporadic failures of test_subprocess and test_multiprocessing_spawn

2015-03-28 Thread Chris Angelico
On Sat, Mar 28, 2015 at 9:10 PM, Chris Angelico wrote: > On Sat, Mar 28, 2015 at 8:39 PM, Victor Stinner > wrote: >> 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? > > I just tried it on my Debi

Re: [Python-Dev] Sporadic failures of test_subprocess and test_multiprocessing_spawn

2015-03-28 Thread Chris Angelico
On Sat, Mar 28, 2015 at 8:39 PM, Victor Stinner wrote: > 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? I just tried it on my Debian Wheezy AMD64, not running as root. (The same computer the build