1664528 - Look into speeding up video collection during browsertime pageloads

Status: REOPENED

(Testing :: Raptor, task, P3)

Description

[Greg Mierzwinski [:sparky]]

Currently the video recording stop takes about 5-6 seconds per pageload. This contributes to a difference in raptor vs browsertime test run times. In raptor we can do a single cold pageload in 7 seconds on linux, while browsertime takes 22 seconds, or ~3x longer.

The video recording stop/processing takes about 5-6 seconds of this 22 seconds. Half of this time is spent stopping the window recorder in Firefox, and the other half is spent on the ffmpeg command that concatenates the frames together.

There might be improvements we can make here such as deferring the video creation/concat to the vismet task.

Comment 1

[Joel Maher ( :jmaher ) (UTC -8)]

do you need video recording/processing for all page load cycles? maybe first/last?

Comment 2

[Greg Mierzwinski [:sparky]]

Something related to :jmaher's comment is that we're now looking into a tp6 "benchmark" test that skips the recordings. We could easily add a recorded iteration to it for quickly obtaining additional data. See the bug in see also for more info.