LWN: Comments on "Redesigned workqueues for io_uring"

Redesigned workqueues for io_uring

ncultra — Mon, 28 Oct 2019 15:31:50 +0000

elegant :)

Redesigned workqueues for io_uring

axboe — Sat, 26 Oct 2019 14:55:34 +0000

You can, the hashing is only for writers.

Redesigned workqueues for io_uring

MattBBaker — Sat, 26 Oct 2019 12:26:54 +0000

It looks like that is just for buffered ops. Which seems reasonable, most applications that would want such an interface are likely playing with the DIO power tools anyways.

Redesigned workqueues for io_uring

pbonzini — Sat, 26 Oct 2019 08:45:26 +0000

Most of the work is done asynchronously, but the remaining part would encounter contention.

Redesigned workqueues for io_uring

roc — Fri, 25 Oct 2019 19:54:44 +0000

> If an application submits multiple buffered I/O requests for a single file, they should not be run concurrently or they are likely to just block each other via lock contention.

Does this mean you can't issue multiple reads from the same file and have them run concurrently? That would be sad.