From: Song Liu <song@kernel.org>
To: Yu Kuai <yukuai1@huaweicloud.com>
Cc: linux-raid <linux-raid@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>,
yi.zhang@huawei.com, "yukuai (C)" <yukuai3@huawei.com>
Subject: Re: [PATCH -next 0/3] md/raid10: reduce lock contention for io
Date: Fri, 9 Sep 2022 07:45:47 -0700 [thread overview]
Message-ID: <CAPhsuW4aOfOjnUx39k4YHcZrNck-WGax1z4qdb61koE0ZugAEA@mail.gmail.com> (raw)
In-Reply-To: <3e9385af-b02c-e886-bc4b-d85cb4f447af@huaweicloud.com>
On Fri, Sep 2, 2022 at 11:08 PM Yu Kuai <yukuai1@huaweicloud.com> wrote:
>
> Hi, Song
>
> 在 2022/09/01 2:00, Song Liu 写道:
> > On Mon, Aug 29, 2022 at 6:03 AM Yu Kuai <yukuai1@huaweicloud.com> wrote:
> >>
> >> From: Yu Kuai <yukuai3@huawei.com>
> >>
> >> patch 1 is a small problem found by code review.
> >> patch 2 avoid holding resync_lock in fast path.
> >> patch 3 avoid holding lock in wake_up() in fast path.
> >>
> >> Test environment:
> >>
> >> Architecture: aarch64
> >> Cpu: Huawei KUNPENG 920, there are four numa nodes
> >>
> >> Raid10 initialize:
> >> mdadm --create /dev/md0 --level 10 --bitmap none --raid-devices 4 /dev/nvme0n1 /dev/nvme1n1 /dev/nvme2n1 /dev/nvme3n1
> >>
> >> Test cmd:
> >> fio -name=0 -ioengine=libaio -direct=1 -group_reporting=1 -randseed=2022 -rwmixread=70 -refill_buffers -filename=/dev/md0 -numjobs=16 -runtime=60s -bs=4k -iodepth=256 -rw=randread
> >>
> >> Test result:
> >> before this patchset: 2.9 GiB/s
> >> after this patchset: 6.6 Gib/s
> >
> > Nice work! Applied to md-next.
>
> Can you drop this version? There are something to improve. I can send a
> new version.
Sure, I will drop it from md-next.
Song
prev parent reply other threads:[~2022-09-09 14:46 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 13:14 [PATCH -next 0/3] md/raid10: reduce lock contention for io Yu Kuai
2022-08-29 13:15 ` [PATCH -next 1/3] md/raid10: fix improper BUG_ON() in raise_barrier() Yu Kuai
2022-08-29 19:53 ` John Stoffel
2022-08-30 1:01 ` Yu Kuai
2022-08-30 6:32 ` Paul Menzel
2022-08-29 13:15 ` [PATCH -next 2/3] md/raid10: convert resync_lock to use seqlock Yu Kuai
2022-09-01 18:41 ` Logan Gunthorpe
2022-09-02 0:49 ` Guoqing Jiang
2022-09-02 0:56 ` Logan Gunthorpe
2022-09-02 1:00 ` Guoqing Jiang
2022-09-02 1:21 ` Yu Kuai
2022-09-02 8:14 ` Yu Kuai
2022-09-02 17:03 ` Logan Gunthorpe
2022-09-03 6:07 ` Yu Kuai
2022-09-02 9:42 ` Guoqing Jiang
2022-09-02 10:02 ` Yu Kuai
2022-09-02 10:16 ` Guoqing Jiang
2022-09-02 10:53 ` Yu Kuai
2022-08-29 13:15 ` [PATCH -next 3/3] md/raid10: prevent unnecessary calls to wake_up() in fast path Yu Kuai
2022-08-29 13:40 ` [PATCH -next 0/3] md/raid10: reduce lock contention for io Guoqing Jiang
2022-08-31 11:55 ` Yu Kuai
2022-08-29 13:58 ` Paul Menzel
2022-08-30 1:09 ` Yu Kuai
2022-08-31 11:59 ` Paul Menzel
2022-08-31 12:07 ` Yu Kuai
2022-08-31 18:00 ` Song Liu
2022-09-03 6:08 ` Yu Kuai
2022-09-09 14:45 ` Song Liu [this message]
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