io_uring is specifically designed so that *zero* system calls are necessary whil... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

quotemstr on Feb 12, 2021 | parent | context | favorite | on: Comparison of Rust async and Linux thread context ...

io_uring is specifically designed so that zero system calls are necessary while the system is busy. Userspace and the kernel both update ring buffers, and ring buffers can be checked and drained without entering the kernel at all.

klodolph on Feb 12, 2021 [–]

Yes, that’s what “if you haven’t received new events when you poll” means.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact