[kugelblitz]

The Profiler reminds me a bit of PHP Symfony's https://blackfire.io/. Even the graphs (flamegraphs) have some strong similarities (e.g. https://blackfire.io/docs/reference-guide/analyzing-timeline...).

I've used Blackfire for a while, and this type of visualization is definitely helpful for finding bottlenecks in web performance. I've been able to reduce page load by caching big chunks that I was able to see in the graph / timeline.