On Fri, Jan 04, 2013 at 05:16:27PM -0700, David Ahern wrote:Known problem. Pick one of: update perf to 3.7, add H to the command
(-e cycles:ppH) or apply this patch:
I spoke too soon. This works for cycles, but not for branch-misses:
pannekake:~> sudo perf record -e branch-misses:ppH -a
Error: sys_perf_event_open() syscall returned with 95 (Operation not supported) for event branch-misses:ppH. /bin/dmesg may provide additional information.
No hardware sampling interrupt available. No APIC? If so then you can boot the kernel with the "lapic" boot parameter to force-enable it.
Why would the two be different?