benchmark.rb

require "benchmark"

def print_memory_usage
  memory_before = `ps -o rss= -p #{Process.pid}`.to_i
  yield
  memory_after = `ps -o rss= -p #{Process.pid}`.to_i

  puts "Memory: #{((memory_after - memory_before) / 1024.0).round(2)} MB"
end

def print_time_spent
  time = Benchmark.realtime do
  yield
  end

  puts "Time: #{time.round(2)}"
end

print_memory_usage do
  print_time_spent do
    "...code..."
  end
end