Search notes:

/proc/sys/kernel/perf_event_paranoid

-1 Allow use of (almost) all events by all users. Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK
>= 0 Disallow raw and ftrace function tracepoint access
>= 1 Disallow CPU event access
>= 2 Disallow kernel profiling
$ echo -1 | sudo tee /proc/sys/kernel/perf_event_paranoid
$ perf stat ls
$ perf stat -e instructions ls

See also

perf
/proc/sys/kernel

Index

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