title: How to understand Flutter CPU profiling chart
body: <p>I trying to use CPU profiler, but have no idea what it all means. I see huge amount of internal framework calls and only several app methods that takes 1-5ms. How it can help me to understand anything? I need to see how much time takes my methods (build, etc) and call count.</p>
  <p><a href="https://i.stack.imgur.com/6oRe8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6oRe8.png" alt="enter image description here" /></a></p>
  <p>And with filtered flutter libraries
  <a href="https://i.stack.imgur.com/9eenH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9eenH.png" alt="enter image description here" /></a></p>
  <p>How to use charts? I know that my screen has lags when scrolling due to very complex widgets, but I dont see that it takes many time in profiler, instead of this I see internal <code>_drawFrame</code> calls and other bullshit. I dont know for whom is it made..</p>