Implementing Page Performance Score on iOS: PPSStateMachine, Metrics, and Instrumentation

Airbnb’s iOS Page Performance Score implementation introduces a PPSStateMachine that ties a UIViewController’s lifecycle to metric collection—tracking first layout, initial load, scroll thread hangs, additional and rich content load times—using nanosecond timestamps, state‑machine protocols, and view‑responder discovery to emit standardized performance logs.

InstrumentationMetricsMobile Development

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Implementing Page Performance Score on iOS: PPSStateMachine, Metrics, and Instrumentation

Airbnb Technology Team

Jul 2, 2024 · Frontend Development

Airbnb Page Performance Score (PPS): Multi‑Platform Metrics, Weighting, and Evolution

Airbnb created the Page Performance Score (PPS), a unified 0‑100 metric that aggregates platform‑specific initial‑load and post‑load user‑centric measurements for Web, iOS, and Android, using weighted curves to enable cross‑page, cross‑team comparisons, track organizational weighted averages, and evolve with new metrics while preserving a stable scale.

AirbnbMetricsPage Performance Score

0 likes · 10 min read

Airbnb Page Performance Score (PPS): Multi‑Platform Metrics, Weighting, and Evolution