Miklos Szeredi <miklos@xxxxxxxxxx> wrote: > Worried about performance? Io-uring will allow you to do all those > five syscalls (or many more) with just one I/O submission. io_uring isn't going to help here. We're talking about synchronous reads. AIUI, you're adding a couple more syscalls to the list and running stuff in a side thread to save the effort of going in and out of the kernel five times. But you still have to pay the set up/tear down costs on the fds and do the pathwalks. io_uring doesn't magically make that cost disappear. io_uring also requires resources such as a kernel accessible ring buffer to make it work. You're proposing making everything else more messy just to avoid a dedicated syscall. Could you please set out your reasoning for that? David
