Benchmarks on GPU's hypervisor with SSD NVMe M.2:

[root@cld-dfa-gpu-01 ~]# /opt/iozone/bin/iozone -r 512k -i 0 -i 1 -i 2 -i 8 -t 2 -s 130G -F /var/lib/nova/instances/file0 /var/lib/nova/instances/file1
Iozone: Performance Test of File I/O
Version $Revision: 3.487 $
Compiled for 32 bit mode.
Build: linux

Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins
Al Slater, Scott Rhine, Mike Wisner, Ken Goss
Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,
Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,
Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone,
Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root,
Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer,
Vangel Bojaxhi, Ben England, Vikentsi Lapa,
Alexey Skidanov, Sudhir Kumar.

Run began: Wed Mar 20 11:52:28 2019

Record Size 512 kB
File size set to 136314880 kB
Command line used: /opt/iozone/bin/iozone -r 512k -i 0 -i 1 -i 2 -i 8 -t 2 -s 130G -F /var/lib/nova/instances/file0 /var/lib/nova/instances/file1
Output is in kBytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 kBytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
Throughput test with 2 processes
Each process writes a 136314880 kByte file in 512 kByte records

Children see throughput for 2 initial writers = 1157104.25 kB/sec
Parent sees throughput for 2 initial writers = 1078970.98 kB/sec
Min throughput per process = 553927.12 kB/sec
Max throughput per process = 603177.12 kB/sec
Avg throughput per process = 578552.12 kB/sec
Min xfer = 125185024.00 kB

Children see throughput for 2 rewriters = 1119696.62 kB/sec
Parent sees throughput for 2 rewriters = 1114042.38 kB/sec
Min throughput per process = 552298.25 kB/sec
Max throughput per process = 567398.38 kB/sec
Avg throughput per process = 559848.31 kB/sec
Min xfer = 132687360.00 kB

Children see throughput for 2 readers = 2104994.62 kB/sec
Parent sees throughput for 2 readers = 2104977.57 kB/sec
Min throughput per process = 1050186.50 kB/sec
Max throughput per process = 1054808.12 kB/sec
Avg throughput per process = 1052497.31 kB/sec
Min xfer = 135717888.00 kB

Children see throughput for 2 re-readers = 2119450.50 kB/sec
Parent sees throughput for 2 re-readers = 2119434.89 kB/sec
Min throughput per process = 1056571.25 kB/sec
Max throughput per process = 1062879.25 kB/sec
Avg throughput per process = 1059725.25 kB/sec
Min xfer = 135506432.00 kB

Children see throughput for 2 random readers = 1300974.00 kB/sec
Parent sees throughput for 2 random readers = 1300965.25 kB/sec
Min throughput per process = 649329.12 kB/sec
Max throughput per process = 651644.88 kB/sec
Avg throughput per process = 650487.00 kB/sec
Min xfer = 135830528.00 kB

Children see throughput for 2 mixed workload = 939007.98 kB/sec
Parent sees throughput for 2 mixed workload = 934027.54 kB/sec
Min throughput per process = 100597.80 kB/sec
Max throughput per process = 838410.19 kB/sec
Avg throughput per process = 469503.99 kB/sec
Min xfer = 16364544.00 kB

Children see throughput for 2 random writers = 1054429.50 kB/sec
Parent sees throughput for 2 random writers = 1048728.15 kB/sec
Min throughput per process = 526668.19 kB/sec
Max throughput per process = 527761.31 kB/sec
Avg throughput per process = 527214.75 kB/sec
Min xfer = 136032768.00 kB

iozone test complete.