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From: Hao Xu <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>, Pavel Begunkov <[email protected]>
Subject: [RFC v2 0/9] fixed worker
Date: Wed, 20 Apr 2022 18:39:51 +0800	[thread overview]
Message-ID: <[email protected]> (raw)

This is the second version of fixed worker implementation.
Wrote a nop test program to test it, 3 fixed-workers VS 3 normal workers.
normal workers:
./run_nop_wqe.sh nop_wqe_normal 200000 100 3 1-3
        time spent: 10464397 usecs      IOPS: 1911242
        time spent: 9610976 usecs       IOPS: 2080954
        time spent: 9807361 usecs       IOPS: 2039284

fixed workers:
./run_nop_wqe.sh nop_wqe_fixed 200000 100 3 1-3
        time spent: 17314274 usecs      IOPS: 1155116
        time spent: 17016942 usecs      IOPS: 1175299
        time spent: 17908684 usecs      IOPS: 1116776

About 2x improvement. From perf result, almost no acct->lock contension.
Test program: https://github.com/HowHsu/liburing/tree/fixed_worker
liburing/test/nop_wqe.c

Hao Xu (9):
  io-wq: add a worker flag for individual exit
  io-wq: change argument of create_io_worker() for convienence
  io-wq: add infra data structure for fixed workers
  io-wq: tweak io_get_acct()
  io-wq: fixed worker initialization
  io-wq: fixed worker exit
  io-wq: implement fixed worker logic
  io-wq: batch the handling of fixed worker private works
  io_uring: add register fixed worker interface

 fs/io-wq.c                    | 457 ++++++++++++++++++++++++++++++----
 fs/io-wq.h                    |   8 +
 fs/io_uring.c                 |  71 ++++++
 include/uapi/linux/io_uring.h |  11 +
 4 files changed, 498 insertions(+), 49 deletions(-)

-- 
2.36.0


             reply	other threads:[~2022-04-20 10:40 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-20 10:39 Hao Xu [this message]
2022-04-20 10:39 ` [PATCH 1/9] io-wq: add a worker flag for individual exit Hao Xu
2022-04-20 10:39 ` [PATCH 2/9] io-wq: change argument of create_io_worker() for convienence Hao Xu
2022-04-20 10:39 ` [PATCH 3/9] io-wq: add infra data structure for fixed workers Hao Xu
2022-04-20 10:39 ` [PATCH 4/9] io-wq: tweak io_get_acct() Hao Xu
2022-04-20 10:39 ` [PATCH 5/9] io-wq: fixed worker initialization Hao Xu
2022-04-20 10:39 ` [PATCH 6/9] io-wq: fixed worker exit Hao Xu
2022-04-20 10:39 ` [PATCH 7/9] io-wq: implement fixed worker logic Hao Xu
2022-04-20 10:39 ` [PATCH 8/9] io-wq: batch the handling of fixed worker private works Hao Xu
2022-04-20 10:40 ` [PATCH 9/9] io_uring: add register fixed worker interface Hao Xu

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