# tokio-rs/io-uring

The `io_uring` library for Rust

Repository: https://github.com/tokio-rs/io-uring
Canonical: https://ross.abutalabs.com/products/io-uring
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: linux, io-uring, rust-lang
Last push: 2026-08-23T08:02:17+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 2518, "days_push": 10, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1719, forks 198 (observed 2026-08-28T04:05:26.548846+00:00)

## What it is
A Rust library providing a safe, low-level interface to the Linux io_uring asynchronous I/O kernel API. It exposes submission and completion queues with opcodes for file and network operations.

## Use cases
- perform asynchronous file I/O in Rust on Linux
- build a high-performance async runtime on io_uring
- do async network I/O with io_uring
- reduce syscall overhead for I/O-heavy workloads
- write low-level io_uring opcodes from Rust

## When to choose
- you need direct, low-level control over Linux io_uring from Rust
- you are building an async runtime or I/O library on io_uring
- your project targets Linux kernel 5.6+ and needs maximum I/O performance

## When to avoid
- you need cross-platform async I/O (Linux-only API)
- you want a high-level async runtime rather than raw io_uring bindings
- your target kernel is older than 5.1 (or 5.6 for full opcode support)

## Facets
- artifact type: library
- maturity: stable
- function: concurrency, file-system, networking, developer-tools
- domain: operating-systems, developer-tools, performance
- platform: rust
- tags: io-uring, async-io, kernel-interface, low-level, bindings, linux

## Member repositories
- tokio-rs/io-uring (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:26.548846+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:34:08.652491+00:00, confidence not recorded.
  - readme: https://github.com/tokio-rs/io-uring (fetched 2026-08-28T04:05:26.548846+00:00, sha 01bd2bc24ae5)
  - registry_crates: https://crates.io/api/v1/crates/io-uring (fetched 2026-08-29T11:10:01.661343+00:00, sha 54dfb9522d68)
- Data as of 2026-08-30T08:39:29.467469+00:00.