Hi, Song
在 2022/09/01 2:00, Song Liu 写道:
On Mon, Aug 29, 2022 at 6:03 AM Yu Kuai <yukuai1@xxxxxxxxxxxxxxx> wrote:
From: Yu Kuai <yukuai3@xxxxxxxxxx>
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.
Thanks,
Kuai
Thanks,
Song
.
