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Extremely slow m.2 writes

kmcmurtrie
Rising Star I

yesterday

I have a PRIME X670-P WIFI motherboard with two m.2 storage cards.  The read speeds are pretty good (>10GB/sec) but the write speeds for both are awful at 300 to 900 MB/sec.  Did I accidentally create a port conflict?

  • M.2_1 : PCIe 5.0 NVMe card
  • M.2_2 : PCIe 4.0 NVMe card
  • PCIEX16_2 : 10GbE card
  • SATA6G_1 : hard drive
  • SATA6G_2: hard drive
  • SATA6G_3 : front port (unused)
  • SATA6G_4 : CD drive 
  • SATA6G_5 : hard drive
  • SATA6G_6 : hard drive

It's a server so it's using only AMD integrated graphics.

  • CPU: AMD 7900X3D
  • OS: Ubuntu 24.04, kernel 6.8.0
  • RAM: 64GB x 4, DOCP-1 latency, 3600MT/s speed
  • BIOS: Just updated today

lspci:

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14d8
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Device 14d9
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14db
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14db
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14db
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14dd
00:08.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14dd
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 71)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e7
01:00.0 Non-Volatile memory controller: Micron/Crucial Technology Device 542b
02:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Upstream Port (rev 01)
03:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
03:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
03:0c.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
03:0d.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
05:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Upstream Port (rev 01)
06:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
06:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
06:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
06:0c.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
06:0d.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
07:00.0 Ethernet controller: Intel Corporation Ethernet Controller 10-Gigabit X540-AT2 (rev 01)
08:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8852BE PCIe 802.11ax Wireless Network Controller
0a:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset USB 3.2 Controller (rev 01)
0b:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset SATA Controller (rev 01)
0c:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset USB 3.2 Controller (rev 01)
0d:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset SATA Controller (rev 01)
0e:00.0 Non-Volatile memory controller: Kingston Technology Company, Inc. KC3000/FURY Renegade NVMe SSD E18 (rev 01)
0f:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raphael (rev ca)
0f:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Rembrandt Radeon High Definition Audio Controller
0f:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 19h PSP/CCP
0f:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15b6
0f:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15b7
0f:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller
10:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15b8

 

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