Thoughts on io_uring

[trungda]

Hi,

Thanks a lot for the fantastic crate. Have we thought about using io_uring to improve throughput? I have seen a few issues about aio but haven't seen any discussions around io_uring yet. I am thinking of implementing a filesystem module using io_uring but want to make sure I don't miss any historical contexts. Thanks!

[ti-chi-bot]

Welcome @trungda! It looks like this is your first issue to tikv/raft-engine 🎉

[tabokie]

Hi @trungda , AFAIK we haven't done any benchmark with io_uring yet. In the past we tried to stick with AIO for better kernel compatibility, and the typical write I/O size is too small to make use of AIO/DIO (#168). On the read path there's pretty much zero prototyping apart from one proposal (#248). The reality is we design the application to avoid read I/O as much as possible.

I'm no longer on the team tho, anyone who is please correct me if there has been new progress.