flamegraph-example.rb

require 'rack-mini-profiler'
require 'flamegraph'
require 'stackprof'

def a
  puts "method a started!"
  sleep 0.5
  puts "method a ended!"
end

def b
  puts "method b started!"
  sleep 0.5
  d
  sleep 0.5
  puts "method b ended!"
end

def c
  puts "method c started!"
  sleep 0.5
  puts "method c ended!"
end

def d
  puts "method d started!"
  sleep 0.5
  e
  sleep 0.5
  e
  sleep 0.5
  puts "method d ended!"
end

def e
  puts "method e started!"
  sleep 0.5
  puts "method e ended!"
end


Flamegraph.generate("flamegraph.test.html") do
  a
  b
  c
end