# 64k写
mkdir /data1/disk-io
fio -name iops -rw=write -bs=64k -runtime=60 -iodepth 32 -filename /data1/disk-io/test.bin -ioengine libaio -direct=1 -size=1g

# 查看结果
iostat -x 1

Device:         rrqm/s   wrqm/s     r/s     w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
nvme1n1           0.00     0.00    0.00    0.00     0.00     0.00     0.00     0.00    0.00    0.00    0.00   0.00   0.00
nvme0n1           0.00     0.00    0.00    0.00     0.00     0.00     0.00     0.00    0.00    0.00    0.00   0.00   0.00
nvme2n1           0.00     0.00    0.00 3232.00     0.00 410348.00   126.96    29.18    9.02    0.00    9.02   0.31  99.80

# 6k
fio -name iops -rw=read -bs=4k -runtime=60 -iodepth 32 -filename  /data1/disk-io/test.bin -ioengine libaio -direct=1 -size=1g

# 
rsync -aP test.bin test.bin1 

dd if=/dev/zero of=/mnt/data/disk-io/test2.bin count=2048k conv=fsync