Brendan Gregg, a senior performance architect at Netflix, gives a talk about various FreeBSD flame graphs.

At the last FreeBSD Developer and Vendor Summit, I gave a talk on “Flame Graphs for FreeBSD”, where I summarized the different types (CPU, memory, disk I/O, off-CPU, chain graphs), showed how they can be generated on FreeBSD, and did some live demos. I think it’s one of my best talks so far, whether you care about FreeBSD or not, to see how this visualization can be used to navigate different types of profiling data.

The slides are on slideshare:

Original post: http://www.brendangregg.com/blog/2015-03-10/freebsd-flame-graphs.html