MyDigitalSSD BPX Pro 80mm (2280-S3-M) M.2 PCI Express 3.1 x4 (PCIe Gen3 x4) NVMe SSD (256GB (240GB))

nvmecontrol devlist

[dan@slocum:~] $ sudo nvmecontrol devlist
 nvme0: BPXP
    nvme0ns1 (228936MB)

nvmecontrol identify nvme0

[dan@slocum:~] $ sudo nvmecontrol identify nvme0
Controller Capabilities/Features
================================
Vendor ID:                   1987
Subsystem Vendor ID:         1987
Serial Number:               C26D07890DC400015192
Model Number:                BPXP
Firmware Version:            ECFM11.0
Recommended Arb Burst:       1
IEEE OUI Identifier:         a7 79 64
Multi-Path I/O Capabilities: Not Supported
Max Data Transfer Size:      2097152
Controller ID:               0x01
Version:                     1.3.0

Admin Command Set Attributes
============================
Security Send/Receive:       Supported
Format NVM:                  Supported
Firmware Activate/Download:  Supported
Namespace Managment:         Not Supported
Device Self-test:            Supported
Directives:                  Not Supported
NVMe-MI Send/Receive:        Not Supported
Virtualization Management:   Not Supported
Doorbell Buffer Config       Not Supported
Abort Command Limit:         4
Async Event Request Limit:   4
Number of Firmware Slots:    1
Firmware Slot 1 Read-Only:   No
Per-Namespace SMART Log:     No
Error Log Page Entries:      63
Number of Power States:      5

NVM Command Set Attributes
==========================
Submission Queue Entry Size
  Max:                       64
  Min:                       64
Completion Queue Entry Size
  Max:                       16
  Min:                       16
Number of Namespaces:        1
Compare Command:             Supported
Write Uncorrectable Command: Supported
Dataset Management Command:  Supported
Write Zeroes Command:        Supported
Save Features:               Supported
Reservations:                Not Supported
Timestamp feature:           Supported
Fused Operation Support:     Not Supported
Format NVM Attributes:       Per-NS Erase, Per-NS Format
Volatile Write Cache:        Present
[dan@slocum:~] $ 

nvmecontrol perftest -n 32 -o read -s 512 -t 30 nvme0ns1

[dan@slocum:~] $ sudo nvmecontrol perftest -n 32 -o read -s 512 -t 30 nvme0ns1
Threads: 32 Size:    512  READ Time:  30 IO/s:  234886 MB/s:  114
[dan@slocum:~] $ 

nvmecontrol perftest with larger blocksizes

[dan@slocum:~] $ sudo nvmecontrol perftest -n 32 -o read -s 4096 -t 30 nvme0ns1
Threads: 32 Size:   4096  READ Time:  30 IO/s:  220218 MB/s:  860

[dan@slocum:~] $ sudo nvmecontrol perftest -n 32 -o read -s 40960 -t 30 nvme0ns1
Threads: 32 Size:  40960  READ Time:  30 IO/s:   76341 MB/s: 2982

[dan@slocum:~] $ sudo nvmecontrol perftest -n 32 -o read -s 409600 -t 30 nvme0ns1
Threads: 32 Size: 409600  READ Time:  30 IO/s:       1 MB/s:    0

[dan@slocum:~] $ sudo nvmecontrol perftest -n 32 -o read -s 81920 -t 30 nvme0ns1
Threads: 32 Size:  81920  READ Time:  30 IO/s:   39967 MB/s: 3122

[dan@slocum:~] $ sudo nvmecontrol perftest -n 32 -o read -s 163840 -t 30 nvme0ns1
Threads: 32 Size: 163840  READ Time:  30 IO/s:       1 MB/s:    0

[dan@slocum:~] $ sudo nvmecontrol perftest -n 32 -o read -s 122880 -t 30 nvme0ns1
Threads: 32 Size: 122880  READ Time:  30 IO/s:   28071 MB/s: 3289
[dan@slocum:~] $