io2

io library

This library gives a single threaded async executor that uses io_uring under the hood. It supports polled (not interrupt driven) direct_io for disk io for minimum latency and maximum throughput.

Main priorities are simplicity, stability and efficiency.

Requirements for Direct-IO usage

• Need to have linux kernel version >= 6.1
• Need to use ext4 or xfs.
• Need to enable io polling on your NVMe disk by setting nvme.poll_queues kernel parameter to at least 1

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.