This is most likely the same bug as https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1663280 Can you confirm that the problem goes away if you run the dynamically linked binary with the environment variable LD_BIND_NOW=1?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1613996 Title: 30% slowdown in numerical solver exection on 16.04.1 vs. 14.04 with same solver binary To manage notifications about this bug go to: https://bugs.launchpad.net/gcc/+bug/1613996/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs