How to read Flamegraphs and Profiling Results

Howdy Rubyists! Time for another installment of the Speedshop newsletter. This time, I want to talk about reading the flames.When you're looking at the profiling output of a Ruby web application, one thing you have to understand is the concept of the "stack frame", and how all of these frames put together constitute the "stack". You also should be generally aware of what the different components of the typical stack are, so that you understand how to find the important parts of a profile and what parts you can generally ignore. Today, I'd like to talk about reading flamegraphs and profiling results in general.