在 2021/9/22 下午8:34, Xiaoguang Wang 写道:
For an echo-server based on io_uring's IORING_POLL_ADD_MULTI feature, only poll request are completed in task work, normal read/write requests are issued when user app sees cqes on corresponding poll requests, and they will mostly read/write data successfully, which don't need task work. So at least for echo-server model, batching poll request completion properly will give benefits. Currently don't find any appropriate place to store batched poll requests, put them in struct io_submit_state temporarily, which I think it'll need rework in future. Signed-off-by: Xiaoguang Wang <xiaoguang.wang@xxxxxxxxxxxxxxxxx>
We may need flush completion when io_submit_end as well, there may be situations where pure poll reqs are sparse. For instance, users may just use pure poll to do accept, and fast poll for read/write, send/recv, latency for pure poll reqs may amplify.
