M4V2 PCIe NVME drive seems slow

[JeremyA]

lsb_release -a
No LSB modules are available.
Distributor ID:    Debian
Description:    Debian GNU/Linux 11 (bullseye)
Release:    11
Codename:    bullseye


hwinfo --disk
20: PCI 00.0: 10600 Disk                                        
  [Created at block.245]
  Unique ID: wLCS.EJHvc9MwvZ7
  Parent ID: VCu0.AxGd7hiuG+6
  SysFS ID: /class/block/nvme0n1
  SysFS BusID: nvme0
  SysFS Device Link: /devices/platform/f8000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/nvme/nvme0
  Hardware Class: disk
  Model: "Samsung Electronics NVMe SSD Controller SM981/PM981/PM983"
  Vendor: pci 0x144d "Samsung Electronics Co Ltd"
  Device: pci 0xa808 "NVMe SSD Controller SM981/PM981/PM983"
  SubVendor: pci 0x144d "Samsung Electronics Co Ltd"
  SubDevice: pci 0xa801 
  Driver: "nvme"
  Driver Modules: "nvme"
  Device File: /dev/nvme0n1
  Device Files: /dev/nvme0n1, /dev/disk/by-id/nvme-eui.002538540142ff22, /dev/disk/by-path/platform-f8000000.pcie-pci-0000:01:00.0-nvme-1, /dev/disk/by-id/nvme-Samsung_SSD_970_EVO_Plus_250GB_S4EUNJ0N451054H
  Device Number: block 259:0
  Geometry (Logical): CHS 238475/64/32
  Size: 488397168 sectors a 512 bytes
  Capacity: 232 GB (250059350016 bytes)
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #1 (Non-Volatile memory controller)



21: None 00.0: 10600 Disk
  [Created at block.245]
  Unique ID: kLao.Fxp0d3BezAE
  Parent ID: OBK3._NN+DZ1HDn4
  SysFS ID: /class/block/mmcblk1
  SysFS BusID: mmc1:aaaa
  SysFS Device Link: /devices/platform/fe320000.mmc/mmc_host/mmc1/mmc1:aaaa
  Hardware Class: disk
  Model: "Disk"
  Driver: "dwmmc_rockchip", "mmcblk"
  Device File: /dev/mmcblk1
  Device Files: /dev/mmcblk1, /dev/disk/by-path/platform-fe320000.mmc, /dev/disk/by-id/mmc-SC16G_0xe2e82a63
  Device Number: block 179:0-179:31
  Geometry (Logical): CHS 486192/4/16
  Size: 31116288 sectors a 512 bytes
  Capacity: 14 GB (15931539456 bytes)
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #15 (MMC Controller)


lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
mmcblk1     179:0    0  14.8G  0 disk 
└─mmcblk1p1 179:1    0  14.7G  0 part /media/mmcboot
nvme0n1     259:0    0 232.9G  0 disk 
└─nvme0n1p1 259:1    0 232.9G  0 part /


hdparm -t --direct /dev/nvme0n1p1

/dev/nvme0n1p1:
 Timing O_DIRECT disk reads: 1088 MB in  3.00 seconds = 362.25 MB/sec

 

In comparison I have seen reports of other Rockchip systems with speeds around 1500 MB/sec.

The drive is a Samsumg 970 EvoPlus

 

 

[Werner]

Providing logs with 

armbianmonitor -u

 helps with troubleshooting and significantly raises chances that issue gets addressed.

[JeremyA]

armbianmonitor -u

 

http://ix.io/4eJI