次のメモリコントローラを使用して、産業用シングルボードコンピュータでDRAMの状態を監視したいと思います。
$ lspci -nn | grep DRAM
00:00.0 Host bridge [0600]: Intel Corporation 3rd Gen Core processor DRAM Controller [8086:0154] (rev 09)
私はDebian 10を実行してみました。
$ modprobe ie31200_edac
$ ras-mc-ctl --status
ras-mc-ctl: drivers are loaded.
$ ras-mc-ctl --layout
ras-mc-ctl: Error: No memories found at via edac.
$ ls /sys/devices/system/edac/mc/
power subsystem uevent
私はメモリレイアウトとmc0サブディレクトリの有用な出力を期待しています（これは同じベンダーの第4世代のシングルボードコンピュータでうまく機能します）。正しいカーネルモジュールをロードしましたか？
メモリの詳細：
$ sudo dmidecode --type=memory
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.
Handle 0x0005, DMI type 5, 20 bytes
Memory Controller Information
Error Detecting Method: 64-bit ECC
Error Correcting Capabilities:
Single-bit Error Correcting
Supported Interleave: One-way Interleave
Current Interleave: One-way Interleave
Maximum Memory Module Size: 8192 MB
Maximum Total Memory Size: 16384 MB
Supported Speeds:
Other
Supported Memory Types:
Other
Memory Module Voltage: Unknown
Associated Memory Slots: 2
0x0006
0x0007
Enabled Error Correcting Capabilities:
Single-bit Error Correcting
Handle 0x0006, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: DIMM0
Bank Connections: None
Current Speed: Unknown
Type: DIMM
Installed Size: 4096 MB (Single-bank Connection)
Enabled Size: 4096 MB (Single-bank Connection)
Error Status: OK
Handle 0x0007, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: DIMM1
Bank Connections: None
Current Speed: Unknown
Type: DIMM
Installed Size: 4096 MB (Single-bank Connection)
Enabled Size: 4096 MB (Single-bank Connection)
Error Status: OK
Handle 0x002A, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 8 GB
Error Information Handle: 0x002F
Number Of Devices: 2
Handle 0x002B, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x002A
Error Information Handle: 0x002D
Total Width: Unknown
Data Width: Unknown
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM0
Bank Locator: BANK 0
Type: <OUT OF SPEC>
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Unknown
Part Number: Not Specified
Rank: Unknown
Configured Memory Speed: 1600 MT/s
Handle 0x002C, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x002A
Error Information Handle: 0x002E
Total Width: Unknown
Data Width: Unknown
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM1
Bank Locator: BANK 2
Type: <OUT OF SPEC>
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Unknown
Part Number: Not Specified
Rank: Unknown
Configured Memory Speed: 1600 MT/s