There’s a known issue where Gen 4 M.2 NVMe drives experience slow performance when installed into the M.2_1 slot in ASUS Pro WS WRX80E-SAGE SE WIFI motherboards, which are used in Lambda workstations.
If you run sudo dmesg | grep -E 'Hardware Error|AER', you’ll see error
messages that look like:
[ 169.304022] {3}[Hardware Error]: It has been corrected by h/w and requires no further action
[ 169.304023] {3}[Hardware Error]: event severity: corrected
[ 169.304024] {3}[Hardware Error]: Error 0, type: corrected
[ 169.304025] {3}[Hardware Error]: section_type: PCIe error
[ 169.304026] {3}[Hardware Error]: port_type: 0, PCIe end point
[ 169.304026] {3}[Hardware Error]: version: 0.2
[ 169.304027] {3}[Hardware Error]: command: 0x0406, status: 0x0010
[ 169.304028] {3}[Hardware Error]: device_id: 0000:2c:00.0
[ 169.304029] {3}[Hardware Error]: slot: 0
[ 169.304029] {3}[Hardware Error]: secondary_bus: 0x00
[ 169.304030] {3}[Hardware Error]: vendor_id: 0x1022, device_id: 0xb000
[ 169.304030] {3}[Hardware Error]: class_code: 010802
[ 169.304031] {3}[Hardware Error]: bridge: secondary_status: 0x0000, control: 0x0000
The error messages might also look like:
[ 4.172130] acpi PNP0A08:03: PCIe AER handled by firmware
[ 59.749158] nvme 0000:2c:00.0: AER: aer_status: 0x00002001, aer_mask: 0x00000000
[ 59.749860] nvme 0000:2c:00.0: AER: [ 0] RxErr (First)
[ 59.750522] nvme 0000:2c:00.0: AER: [13] NonFatalErr
[ 59.751161] nvme 0000:2c:00.0: AER: aer_layer=Physical Layer, aer_agent=Receiver ID
If you’re experiencing slow performance and seeing errors, contact Lambda Support for a BIOS update that fixes the issue.