This covers probably 90% of the usefulness of io_uring for non-niche applications. Its original purpose was doing buffered async file IO without a bunch of caveats that make it effectively useless. The biggest speed up I’ve found with it is ‘stat’ing large sets of files in the VFS cache. It can literally be 50x faster at that, since you can do 1000 files with a single systemcall and the data you need from the kernel is all in memory.
High throughput network usecases that don’t need/want AF_XDP or DPDK can get most of the speedup with ‘sendmmsg/recvmmsg’ and segmentation offload.
High throughput network usecases that don’t need/want AF_XDP or DPDK can get most of the speedup with ‘sendmmsg/recvmmsg’ and segmentation offload.