In fact, on Yakkety with 4.8.0-34, the results of running perf --call- graph are even more bizarre:
$ perf record --call-graph dwarf sleep 1 Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (cycles). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? $ grep -i config_perf_events /boot/config-$(uname -r) CONFIG_PERF_EVENTS=y CONFIG_PERF_EVENTS_INTEL_UNCORE=y CONFIG_PERF_EVENTS_INTEL_RAPL=m CONFIG_PERF_EVENTS_INTEL_CSTATE=m # CONFIG_PERF_EVENTS_AMD_POWER is not set -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1248289 Title: Missing libunwind support in perf To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1248289/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
