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Abdulhai Mohamed Samy
Abdulhai Mohamed Samy

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io_uring — The Modern Asynchronous I/O Revolution in Linux

Difficulty: Advanced

Reading Time: 10 min read

Last Updated: June 30, 2025


💡 Have you ever wondered why, despite Linux’s reputation for performance, traditional I/O calls often feel slow and blocking?

For decades, the kernel’s I/O model has revolved around syscalls and context switches — a model that worked, but came with real costs in performance and scalability. Enter io_uring, a Linux feature that quietly rewrites the rules of how applications talk to the kernel.

  • How does it eliminate syscall overhead with shared rings?
  • Why are databases, web servers, and logging systems racing to adopt it?
  • And if it’s so powerful, why are Google and Android still hesitant to enable it by default?

In this article, I break down the architecture, the algorithms, and the real-world use cases of io_uring — and why it might be the biggest leap in Linux I/O since epoll.

Read the full article in my Notion blog here:

📌 Note:

The full article lives in my Notion blog here, which serves as the single hub for all my articles and ensures consistent formatting across platforms. You can read this article directly in the Notion link above. Feel free to share your thoughts or feedback in the site comments—or drop me a note on LinkedIn.

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About the Author

Abdul-Hai Mohamed | Software Engineering Geek’s.

Writes in-depth articles about Software Engineering and architecture.

Follow on GitHub and LinkedIn.

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