These are the metrics that would be used by the engineering team to evaluate effectiveness of front-end optimizations, and shouldn’t be communicated to stakeholders. Emily’s 90% page loaded metric is a way better model for measurable progress of “page load time”.
The purpose of this document is to outline the main metrics we use when discussing various end-user performance measurements such as "page speed".
Fig 1) A diagram we have been using in conversations to help illustrate the various events
and how they inter-relate.