en English

[Technical Papers] NVMe disk performance test method

NVMe is a standard interface protocol for PCIe. Remove the old standard on SSD restrictions. Support all common operating systems. Good scalability.
M.2-NVMe-PCIe-SSD

Table of Contents

What is NVMe?

 1. NVMe is a standard interface protocol for PCIe.
 2, Remove the old standard on SSD restrictions.
 3. Support all common operating systems.
 4. Good scalability.
 5, with low delay, low energy consumption, high performance, and other advantages.
 
 The traditional AHCI protocol is highly compatible but does not provide the best performance when used with SSDS connected over a PCIe bus.  NVMe is designed to maximize SSD performance by taking advantage of the low latency and parallelism of PCIe SSDS and combining processor and platform architectures.

It is well known that SSDs have faster read and write speeds than mechanical hard drives. Most machines now use the SATA bus standard, which actually transfers up to about 600MB/s. SSDs that support the PCIe bus, the NVMe protocol, will actually transfer at over 1000MB/s. How exactly do you test the performance of an NVMe drive? Please see below

View NVMe disk

[[email protected] ~]# nvme list
View-NVMe-Disk-from-CMD-Command

Dd Tests raw disks

Bs = 4KB speed increased significantly, up to 2.7GB /s

[[email protected] ~]# dd if=/dev/zero of=/dev/nvme0n1 bs=512 count=1000000
1000000+0 records in
1000000+0 records out
512000000 bytes (512 MB, 488 MiB) copied, 1.99117 s, 257 MB/s
[[email protected] ~]# dd if=/dev/zero of=/dev/nvme0n1 bs=1024 count=1000000
1000000+0 records in
1000000+0 records out
1024000000 bytes (1.0 GB, 977 MiB) copied, 3.48962 s, 293 MB/s
[[email protected] ~]# dd if=/dev/zero of=/dev/nvme0n1 bs=2048 count=1000000
1000000+0 records in
1000000+0 records out
2048000000 bytes (2.0 GB, 1.9 GiB) copied, 6.51846 s, 314 MB/s
[[email protected] ~]# dd if=/dev/zero of=/dev/nvme0n1 bs=4096 count=1000000
1000000+0 records in
1000000+0 records out
4096000000 bytes (4.1 GB, 3.8 GiB) copied, 1.51598 s, 2.7 GB/s
[[email protected] ~]# dd if=/dev/zero of=/dev/nvme0n1 bs=8192 count=1000000
1000000+0 records in
1000000+0 records out
8192000000 bytes (8.2 GB, 7.6 GiB) copied, 2.69523 s, 3.0 GB/s

FIO performance test

For NVMe disks, the performance of 4KB blocks is much better than that of 512 blocks

[[email protected] ~]# fio -ioengine=libaio -bs=4k -direct=1 -thread -rw=write -filename=/dev/nvme0n1 -name="BS 4KB read test" -iodepth=128 -runtime=30
BS 4KB read test: (g=0): rw=write, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=128
fio-3.19
Starting 1 thread
Jobs: 1 (f=1): [W(1)][100.0%][w=1441MiB/s][w=369k IOPS][eta 00m:00s]
BS 4KB read test: (groupid=0, jobs=1): err= 0: pid=60840: Fri Dec 24 01:09:51 2021
write: IOPS=369k, BW=1441MiB/s (1511MB/s)(42.2GiB/30001msec); 0 zone resets

[[email protected] ~]# fio -ioengine=libaio -bs=512 -direct=1 -thread -rw=write -filename=/dev/nvme0n1 -name="BS 4KB read test" -iodepth=128 -runtime=30
BS 4KB read test: (g=0): rw=write, bs=(R) 512B-512B, (W) 512B-512B, (T) 512B-512B, ioengine=libaio, iodepth=128
fio-3.19
Starting 1 thread
Jobs: 1 (f=1): [W(1)][100.0%][w=192MiB/s][w=392k IOPS][eta 00m:00s]
BS 4KB read test: (groupid=0, jobs=1): err= 0: pid=60689: Fri Dec 24 01:05:34 2021
write: IOPS=392k, BW=191MiB/s (201MB/s)(5740MiB/30001msec); 0 zone resets

[[email protected] ~]# fdisk -l
Disk /dev/nvme0n1: 894.3 GiB, 960197124096 bytes, 1875385008 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 131072 bytes / 131072 bytes

Disk /dev/nvme2n1: 1.8 TiB, 1920383410176 bytes, 3750748848 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

DiskMFR Field Sales Manager - Leo

It’s Leo Zhi. He was born on August 1987. Major in Electronic Engineering & Business English, He is an Enthusiastic professional, a responsible person, and computer hardware & software literate. Proficient in NAND flash products for more than 10 years, critical thinking skills, outstanding leadership, excellent Teamwork, and interpersonal skills.  Understanding customer technical queries and issues, providing initial analysis and solutions. If you have any queries, Please feel free to let me know, Thanks

DiskMFR Free Sample Application
  • Still worried about storage product quality?
  • Current suppliers can’t provide perfect after-sales service

  • Get our free sample for testing now

Leave a Reply

Your email address will not be published. Required fields are marked *

seventeen + 10 =

Please let us know what you require, and you will get our reply within 24 hours.

  • Our team will answer your inquiries within 24 hours.
  • Your information will be kept strictly confidential.

Let's Have A Chat

Learn How We Served 100+ Global Device Brands with our Products & Get Free Sample!!!

Email Popup Background 2