From "Ideas for metrics" in the Google doc:
- Visual progression:
- Time from navigation start to first contentful paint.
- Time from first contentful paint to banner being fully rendered.
- CN client-side profiling: Execution time from first CN code execution to call to fetch banner.
- Network timing: Duration of request to fetch banner.
- Bandwidth consumption
- For fundraising campaigns: Data could be placed in banner history log, to investigate possible relationships between performance and donation rate.