The Resource Timeline in Request Metrics is a heat map of all the files requested by your pages. It shows the range of resource load time and critical load events experienced by all users, not just a single point load. The data allows you to see which resources impact your page metrics as well as the variability in their load time.

It's been a long time since we produced a new Request Metrics video and we wanted to give an update! Things have been going well and the product is out there! We made some good choices. Some not so good choices. And we've made many enhancements since launch. Watch Part 1 of our Request Metrics Released series to see how things are going, and what we did right!