Use io_uring for io operations

[andresmargalef]

I don't know if this is for hyper, tokio or mio but it is interesting to use the new io stack from linux 5.1 +.
In async java world there is interest to start to support the new feature.
Copy&paste that issue here

...
Since Linux 5.1 there’s a new mechanism for high-performance batched asynchronous IO called io_uring. While it was primarily designed for disk io, it also works for network requests: https://blog.cloudflare.com/io_submit-the-epoll-alternative-youve-never-heard-about/

Is this something that would make sense for netty?
...

[seanmonstar]

Yes we've been actively looking into this.

[quininer]

I have some attempts, and currently ritsu can be used in combination with hyper. :D

https://github.com/quininer/ritsu/blob/master/ritsu-hyper/src/main.rs

[andresmargalef]

@quininer I will try that code, have you seen some improvement in performance?

[quininer]

@andresmargalef I am currently not focus performance improvement.

[fwsGonzo]

Have any of you had a look at rio? It seems to be a safe approach to io_uring

[MikailBag]

rio readme states:

use-after-free bugs are still possible without unsafe when using rio

AFAIK there is no way to build safe&sound API on top of io_uring without redesigning Tokio IO traits.

[malobre]

Related: Announcing tokio-uring: io-uring support for Tokio

[threeseed]

Also would add you can use Glommio which uses io_uring internally:

https://github.com/DataDog/glommio/blob/master/examples/hyper.rs

[jim-king-2000]

#577
So, does hyper support io_uring?

[andresmargalef]

Tokio is working on io-uring here

[jim-king-2000]

Any web framework which supports io_uring?

[davidpdrsn]

Any web framework which supports io_uring?

Unlikely given that most frameworks are built on top of hyper. There is this actix/actix-web#2404 but thats specifically for files 🤷

[jim-king-2000]

Any web framework which supports io_uring?

Unlikely given that most frameworks are built on top of hyper. There is this actix/actix-web#2404 but thats specifically for files 🤷

So, any next-generation web framework which will supports io_uring in the future?