perf.md

    perf record -e cpu-clock -g -p 24366 
    perf script -i perf.data &> perf.unfold
    git clone https://github.com/brendangregg/FlameGraph
    ./stackcollapse-perf.pl perf.unfold &> perf.folded
    ./flamegraph.pl perf.folded > perf.svg