$ git clone https://github.com/brendangregg/FlameGraph.git
Cloning into 'FlameGraph'...
remote: Enumerating objects: 1067, done.
remote: Total 1067 (delta 0), reused 0 (delta 0), pack-reused 1067
Receiving objects: 100% (1067/1067), 1.87 MiB | 6.67 MiB/s, done.
Resolving deltas: 100% (612/612), done.
$ ./FlameGraph/stackcollapse-perf.pl out.script > out.folded
$ ./FlameGraph/flamegraph.pl out.folded > out.svg