Top-like live view perf

Annotate hot functions perf annotate Flamegraph data collection perf record -F 99 -ag -- sleep 30 && perf script > out.perf Count syscalls perf stat -e syscalls:sys_enter_read ./my_app Attach to running process perf record -p 1234 sleep 5 Live CPU flame call graph perf top -g --call-graph dwarf