Hi David, > New to io_uring but can't find this answer online, so reaching out. > > I was trying out io_uring with netperf - tcp stream sockets - and > noticed a submission is called complete even with a partial send > (io_send(), ret < sr->len). Saving the offset of what succeeded (plus > some other adjustments) and retrying the sqe again solves the problem. > But the issue seems fundamental so wondering if is intentional? I guess this is just the way it is currently. For Samba I'd also like to be sure to never get short write to a socket. There I'd like to keep the pipeline full by submitting as much sqe's as possible (without waiting for completions on every single IORING_OP_SENDMSG/IORING_OP_SPLICE) using IOSQE_IO_DRAIN or IOSQE_IO_LINK and maybe IOSQE_ASYNC or IORING_SETUP_SQPOLL. But for now I just used a single sqe with IOSQE_ASYNC at a time. Jens, do you see a way to overcome that limitation? As far as I understand the situation is completely fixed now and it's no possible to get short reads and writes for file io anymore, is that correct? metze
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