Just to be sure, since Ubuntu's gcc has "--enable-default-pie" I wanted to check. Do "the others" set pie by default as well? Just want to make sure that their execution without explicit pie is -no-pie while ours would then be -pie.
For your kernel thoughts - even though the first idea was already falsified by your tests. You said you are on Kernel 4.4, but the change you mentioned as "maybe related" was in 4.13 and reverted in 4.15. That said since you suspect the kernel to be related, is in that regard a major difference between? linux: 4.4.0-141.167 linux-hwe: 4.15.0-43.46~16.04.1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1812182 Title: Performance degradation with SPECint2017 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1812182/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs