libuv Adds IO_uring Support For ~8x Throughput Boost

Written by Michael Larabel in Programming on 18 April 2023 at 10:28 AM EDT. 3 Comments
Libuv as the cross-platform asynchronous I/O library that is used by the likes of Node.js, Julia, and other software packages now has support for making use of IO_uring on Linux.

As of today IO_uring support has been merged into libuv for async file operations around read / write / fsync / fdatasync / stat / fstat / lstat. Libuv will make use of IO_uring when running on a new enough Linux kernel otherwise will fallback to using its existing thread pool solution.

The commit mentions:
Performance looks great; an 8x increase in throughput has been observed.

Yes, you read that right as an 8x increase in throughput with the wonderful IO_uring.

libuv logo

This addresses a five year old request for IO_uring support with libuv.
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