gp2

mount /dev/nvme1n1p1 /mnt/gp3
mount /dev/nvme2n1p1 /mnt/gp2
yum install gcc zlib-devel
wget https://codeload.github.com/axboe/fio/tar.gz/fio-3.24
tar zfxv fio-3.24
cd fio-fio-3.24/
./configure --prefix=/home/fio
make; make install

fio --directory=/mnt/gp3 --name fio_test_file --direct=1 --rw=randread \
--bs=4K --size=1G --numjobs=7 --time_based --runtime=180 --group_reporting \
--norandommap

Jobs: 7 (f=7): [r(7)][100.0%][r=11.7MiB/s][r=3001 IOPS][eta 00m:00s]
fio_test_file: (groupid=0, jobs=7): err= 0: pid=2450: Wed Dec  2 06:59:19 2020
  read: IOPS=3016, BW=11.8MiB/s (12.4MB/s)(2121MiB/180004msec)
    clat (usec): min=188, max=296635, avg=2319.05, stdev=1213.65
     lat (usec): min=188, max=296635, avg=2319.21, stdev=1213.65
    clat percentiles (usec):
     |  1.00th=[  408],  5.00th=[  922], 10.00th=[ 1287], 20.00th=[ 1598],
     | 30.00th=[ 1762], 40.00th=[ 1926], 50.00th=[ 2057], 60.00th=[ 2212],
     | 70.00th=[ 2474], 80.00th=[ 2933], 90.00th=[ 3818], 95.00th=[ 4621],
     | 99.00th=[ 6194], 99.50th=[ 6587], 99.90th=[ 7767], 99.95th=[ 8455],
     | 99.99th=[10028]
   bw (  KiB/s): min= 9848, max=32328, per=100.00%, avg=12069.08, stdev=167.76, samples=2513
   iops        : min= 2462, max= 8082, avg=3017.27, stdev=41.94, samples=2513
  lat (usec)   : 250=0.05%, 500=2.12%, 750=1.59%, 1000=1.99%
  lat (msec)   : 2=40.61%, 4=45.04%, 10=8.59%, 20=0.01%, 50=0.01%
  lat (msec)   : 250=0.01%, 500=0.01%
  cpu          : usr=0.12%, sys=0.29%, ctx=543082, majf=0, minf=93
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=542985,0,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=1

Run status group 0 (all jobs):
   READ: bw=11.8MiB/s (12.4MB/s), 11.8MiB/s-11.8MiB/s (12.4MB/s-12.4MB/s), io=2121MiB (2224MB), run=180004-180004msec

Disk stats (read/write):
  nvme1n1: ios=542478/13, merge=0/3, ticks=1253070/0, in_queue=1078350, util=99.97%

fio --directory=/mnt/gp2 --name fio_test_file --direct=1 --rw=randread \
--bs=4K --size=1G --numjobs=7 --time_based --runtime=180 --group_reporting \
--norandommap

fio-3.24
Starting 7 processes
Jobs: 7 (f=7): [r(7)][100.0%][r=11.7MiB/s][r=2997 IOPS][eta 00m:00s]
fio_test_file: (groupid=0, jobs=7): err= 0: pid=1316: Wed Dec  2 07:13:16 2020
  read: IOPS=3016, BW=11.8MiB/s (12.4MB/s)(2121MiB/180004msec)
    clat (usec): min=192, max=298525, avg=2318.95, stdev=1162.93
     lat (usec): min=192, max=298525, avg=2319.12, stdev=1162.93
    clat percentiles (usec):
     |  1.00th=[  457],  5.00th=[  963], 10.00th=[ 1254], 20.00th=[ 1565],
     | 30.00th=[ 1729], 40.00th=[ 1909], 50.00th=[ 2057], 60.00th=[ 2245],
     | 70.00th=[ 2540], 80.00th=[ 3032], 90.00th=[ 3818], 95.00th=[ 4490],
     | 99.00th=[ 5932], 99.50th=[ 6259], 99.90th=[ 6915], 99.95th=[ 7373],
     | 99.99th=[ 8455]
   bw (  KiB/s): min= 9808, max=26696, per=100.00%, avg=12069.37, stdev=141.33, samples=2513
   iops        : min= 2452, max= 6674, avg=3017.34, stdev=35.33, samples=2513
  lat (usec)   : 250=0.01%, 500=1.48%, 750=1.61%, 1000=2.48%
  lat (msec)   : 2=41.05%, 4=44.98%, 10=8.40%, 20=0.01%, 250=0.01%
  lat (msec)   : 500=0.01%
  cpu          : usr=0.12%, sys=0.30%, ctx=543092, majf=0, minf=90
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=543002,0,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=1

Run status group 0 (all jobs):
   READ: bw=11.8MiB/s (12.4MB/s), 11.8MiB/s-11.8MiB/s (12.4MB/s-12.4MB/s), io=2121MiB (2224MB), run=180004-180004msec

Disk stats (read/write):
  nvme2n1: ios=542683/0, merge=0/0, ticks=1253810/0, in_queue=1076380, util=99.74%

Jobs: 7 (f=7): [r(7)][75.6%][r=11.7MiB/s][r=3001 IOPS][eta 00m:44s]

fio-3.24
Starting 7 processes
Jobs: 7 (f=7): [r(7)][100.0%][r=23.4MiB/s][r=6002 IOPS][eta 00m:00s]
fio_test_file: (groupid=0, jobs=7): err= 0: pid=1393: Wed Dec  2 07:29:50 2020
  read: IOPS=6033, BW=23.6MiB/s (24.7MB/s)(4242MiB/180002msec)
    clat (usec): min=146, max=327858, avg=1158.79, stdev=1152.61
     lat (usec): min=146, max=327858, avg=1158.95, stdev=1152.62
    clat percentiles (usec):
     |  1.00th=[  281],  5.00th=[  371], 10.00th=[  441], 20.00th=[  586],
     | 30.00th=[  685], 40.00th=[  766], 50.00th=[  848], 60.00th=[  947],
     | 70.00th=[ 1090], 80.00th=[ 1434], 90.00th=[ 2343], 95.00th=[ 3294],
     | 99.00th=[ 5014], 99.50th=[ 5342], 99.90th=[ 6456], 99.95th=[ 8455],
     | 99.99th=[26608]
   bw (  KiB/s): min=16360, max=37232, per=100.00%, avg=24140.01, stdev=241.45, samples=2513
   iops        : min= 4090, max= 9308, avg=6035.00, stdev=60.36, samples=2513
  lat (usec)   : 250=0.64%, 500=13.39%, 750=23.96%, 1000=26.32%
  lat (msec)   : 2=23.16%, 4=9.85%, 10=2.63%, 20=0.01%, 50=0.04%
  lat (msec)   : 100=0.01%, 250=0.01%, 500=0.01%
  cpu          : usr=0.24%, sys=0.53%, ctx=1086208, majf=0, minf=87
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=1085994,0,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=1

Run status group 0 (all jobs):
   READ: bw=23.6MiB/s (24.7MB/s), 23.6MiB/s-23.6MiB/s (24.7MB/s-24.7MB/s), io=4242MiB (4448MB), run=180002-180002msec

Disk stats (read/write):
  nvme2n1: ios=1085375/0, merge=0/0, ticks=1249280/0, in_queue=1077940, util=100.00%