The RUM SpeedIndex metric calculates speedIndex (an indexed value representing the average time at which visible parts of the page are displayed) from resource timings. Is this something that browser-perf would be interested in adding as a builtin metric?
The RUM SpeedIndex metric calculates speedIndex (an indexed value representing the average time at which visible parts of the page are displayed) from resource timings. Is this something that browser-perf would be interested in adding as a builtin metric?
I have an initial implementation here.