Echo_server codes can be clone from: https://codeup.openanolis.cn/codeup/storage/io_uring-echo-server.git branch is xiaoguangwang/io_uring_multishot. There is a simple HOWTO in this repository. Usage: In server: port 10016, 1000 connections, packet size 16 bytes, and enable fixed files. taskset -c 10 io_uring_echo_server_multi_shot -f -p 10016 -n 1000 -l 16 In client: taskset -c 13,14,15,16 ./echo -addr 11.238.147.21:10016 -n 1000 -size 16 Before this patchset, the tps is like below: 1:15:53 req: 1430425, req/s: 286084.693 11:15:58 req: 1426021, req/s: 285204.079 11:16:03 req: 1416761, req/s: 283352.146 11:16:08 req: 1417969, req/s: 283165.637 11:16:13 req: 1424591, req/s: 285349.915 11:16:18 req: 1418706, req/s: 283738.725 11:16:23 req: 1411988, req/s: 282399.052 11:16:28 req: 1419097, req/s: 283820.477 11:16:33 req: 1417816, req/s: 283563.262 11:16:38 req: 1422461, req/s: 284491.702 11:16:43 req: 1418176, req/s: 283635.327 11:16:48 req: 1414525, req/s: 282905.276 11:16:53 req: 1415624, req/s: 283124.140 11:16:58 req: 1426435, req/s: 284970.486 with this patchset: 2021/09/24 11:10:01 start to do client 11:10:06 req: 1444979, req/s: 288995.300 11:10:11 req: 1442559, req/s: 288511.689 11:10:16 req: 1427253, req/s: 285450.390 11:10:21 req: 1445236, req/s: 288349.853 11:10:26 req: 1423949, req/s: 285480.941 11:10:31 req: 1445304, req/s: 289060.815 11:10:36 req: 1441036, req/s: 288207.119 11:10:41 req: 1441117, req/s: 288220.695 11:10:46 req: 1441451, req/s: 288292.731 11:10:51 req: 1438801, req/s: 287759.157 11:10:56 req: 1433227, req/s: 286646.338 11:11:01 req: 1438307, req/s: 287661.577 about 1.3% tps improvements. Changes in v3: Rebase to for-5.16/io_uring. Changes in v2: I dropped the poll request completion batching patch in V1, since it shows performance fluctuations, hard to say whether it's useful. Xiaoguang Wang (3): io_uring: refactor event check out of __io_async_wake() io_uring: reduce frequent add_wait_queue() overhead for multi-shot poll request io_uring: don't get completion_lock in io_poll_rewait() fs/io_uring.c | 131 +++++++++++++++++++++++++++++++--------------------------- 1 file changed, 70 insertions(+), 61 deletions(-) -- 2.14.4.44.g2045bb6
