FIG using a flame perf abbreviated

introduction

perf profile is a free tool provided by linux.
A more comprehensive tutorial: brendangregg

perf generated record

1. Data generated perf:

sudo perf record -g ls

2. Read perf.data, output trace

sudo perf script -i perf.data > perf.unfold

3. Stack compression
is used here flame chart tool: https://github.com/brendangregg/FlameGraph

stackcollapse-perf.pl perf.unfold > perf.folded

4. Generate File svg

flamegraph.pl perf.folded > ls.svg