# Redox OS completes io_uring-like ring buffer I/O with async driver executor

> **Key takeaway:** Redox OS has finished a grant-funded year-long effort to implement io_uring-style ring buffer I/O at the system task level, including application-facing APIs and an async executor for drivers.

**Published:** 2026-10-28T14:05:05+00:00 
**Source:** Linux Weekly News (LWN.net) 
**Category:** kernel-os 
**Canonical URL:** https://fosswire.org/news/redox-os-completes-iouring-like-ring-buffer-io-with-async-dr.html 

## Summary
The Redox OS project, a Unix-like microkernel operating system written in Rust, has completed a major phase of work to bring io_uring-like ring buffer I/O to its architecture. The effort, funded by a grant awarded last year, concluded in September with ring buffer machinery now in place for system services and compatible drivers, plus an io_uring and liburing-like API for applications. The team also built out supporting infrastructure including an async executor for drivers and performance optimizations to accelerate context switching between applications and their system services.

This work represents a foundational shift in how Redox handles I/O, moving toward the same zero-copy, submission-completion queue model that has transformed Linux performance. By implementing this at the system task level first, Redox is positioning ring buffer communication as the default path between user applications and most system services, not merely a niche optimization for storage or networking.

## Ring buffer architecture and async driver infrastructure
- **System-task ring buffers:** The core machinery enables ring buffer communication at the system task level, serving as the foundation for broader application-to-service I/O.
- **Application API compatibility:** An io_uring and liburing-like API was completed and demonstrated, providing familiar interfaces for developers porting or writing applications on Redox.
- **Async driver executor:** A dedicated async executor was developed for drivers, enabling asynchronous operation within Redox's driver subsystem.
- **Performance optimization:** Substantial work targeted faster switching between applications and their system services, addressing a critical path in microkernel architectures where context switch overhead is a persistent concern.

## Why it matters
Redox OS's adoption of io_uring-style I/O signals growing convergence between experimental operating systems and the performance primitives that have become standard on Linux, potentially easing future porting of high-performance applications and libraries. For the Rust-in-systems-programming community, this provides a production-grade reference for async I/O at the OS level. The grant-funded model also demonstrates continued institutional support for alternative open-source kernel research beyond the Linux monoculture.