An Ember render performance initializer to log all the render performance metrics

ember-render-performance-logger-initializer.js

import Ember from 'ember';

export default {
  name: 'ember-render-performance',

  initialize() {
    Ember.subscribe('render', {
      before(_, startTime) { return startTime; },
      after(name, endTime, payload, startTime) {
        console.log(`${payload.containerKey || name}`, endTime - startTime);
      }
    });
  }
};