Add experimental support for io_uring

[puzpuzpuz]

Recent Linux kernel (5.1+) includes io_uring, a new non-blocking I/O subsystem, which might serve as a more efficient alternative to epoll. We could benefit from it and get a performance improvement in network I/O scenarios with high volume of concurrent connections and/or for fs operations.

Of course, in Node.js case we need changes made in libuv. There is an ongoing experiment aimed to add support for io_uring in libuv: libuv/libuv#2322

As this feature should be experimental (at least initially), io_uring mode could be activated under a new flag.

The goal of this issue is to improve visibility of the libuv experiment and gather some feedback.

[mcollina]

I’m happy to benchmark this if we have a matching Node PR. It’s very interesting!

[puzpuzpuz]

@mcollina no, we don't have a Node.js counterpart PR yet. But I hope to submit one once I find out status of the libuv PR. Will post any updates here.

[github-actions]

There has been no activity on this feature request for 5 months and it is unlikely to be implemented. It will be closed 6 months after the last non-automated comment.

For more information on how the project manages feature requests, please consult the feature request management document.

[github-actions]

There has been no activity on this feature request for 5 months and it is unlikely to be implemented. It will be closed 6 months after the last non-automated comment.

For more information on how the project manages feature requests, please consult the feature request management document.