# Sending a sample of events to Speed Insights
**Author:** DX Team
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By default, all events are sent to Speed Insights.
To send only a sample of your data, you can add the Speed Insights component with the [`sampleRate`](/docs/speed-insights/package#samplerate) prop to your app's root layout. The [`sampleRate`](/docs/speed-insights/package#samplerate) prop accepts a number between 0 and 1, where 0 is 0% and 1 is 100%:
`import { SpeedInsights } from '@vercel/speed-insights/next'; export default function RootLayout({ children, }: {children: React.ReactNode;}) { return ( Next.js {children} ); }`
## More resources
- [`@vercel/speed-insight`](/docs/speed-insights/package)[s reference](/docs/speed-insights/package)
- [Speed Insights](/docs/speed-insights)
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[View full KB sitemap](/kb/sitemap.md)