Hi Pavel, > But I'm rather asking whether we know about recent issues. > > Firstly I noticed the hang on ppc64le, but later it occurred on x86_64, ppc64 > and i686: https://koji.fedoraproject.org/koji/taskinfo?taskID=16970779 > so this is not arch-specific issue.
I can find these (old) reports: * "On machines with massive amounts of CPUs, the gnulib 'test-lock' could take minutes, or even appear to deadlock, because of timing interactions between multiple cores." [1] * "I believe this is a bug in the futex code due to a missing barrier." [2] * A hang on FreeBSD, unknown cause [3] You should try to let it run for 10 minutes, in the first place. I think its total running time depends on whether the thread scheduler in the kernel is fair or not. Bruno [1] https://www.redhat.com/archives/libvir-list/2012-March/msg00854.html [2] https://bugzilla.redhat.com/show_bug.cgi?id=1155291 [3] https://lists.gnu.org/archive/html/bug-gnulib/2014-09/msg00025.html
