Ah! You're right, that's the reason! When the kernel is locked down ftrace is explicitly disabled. To confirm that, you should have 0 in /proc/sys/kernel/ftrace_enabled.
Can you try to set it back to 1 and see if kprobe-perf works after that? Otherwise I'll figure out an alternative way to trace down the swapping issue. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861359 Title: swap storms kills interactive use To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861359/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
