What it tracks
- Render count and duration
- Mount vs update events
- Trigger keys (when available)
- Route association
What to watch for
- Components crossing threshold count/time repeatedly
- Expensive updates on stable routes
- Noise from internals (toggle hide internals)
Quick workflow
- Set threshold values for your app scale.
- Filter by route.
- Inspect timeline of the hottest component and correlate trigger keys.