Live site : vigneshimself.github.io/d3-flame-graph
Generated using a D3.js plugin that produces flame graphs from hierarchical data.
Check Brendan Gregg's post to know what flame graphs are.
Flame graphs are a visualization of profiled software, allowing the most frequent code-paths to be identified quickly and accurately. They can be generated using my open source programs on github.com/brendangregg/FlameGraph, which create interactive SVGs.
Brendan Gregg
If you want to produce a flame graph locally in a single step, try 0x