Tokio introduces dial9, a new runtime telemetry tool designed as a 'flight recorder' for debugging production performance issues in asynchronous Rust applications. It captures detailed event timelines to identify problems like kernel scheduling delays that aggregate metrics miss. The tool aims to provide low-overhead observability specifically for Tokio's runtime behavior under load.
Background
Tokio is a popular asynchronous runtime for the Rust programming language, enabling efficient, concurrent applications. Debugging performance issues in production, especially under high concurrency, is a common challenge for developers using async runtimes.
- Source
- Lobsters
- Published
- Mar 19, 2026 at 11:14 PM
- Score
- 6.0 / 10