두 개의 Dimm 카드를 추가한 후 구성된 클럭 속도가 변경된 이유

2024-11-7 • tag-icon

DELL HW를 탑재한 Linux 시스템이 있고 시스템에는 256G 메모리가 있습니다.

32G의 새 DIMM 카드를 추가하기 전에 Configured Clock Speed2400MHz인지 확인했습니다.

그래서 나중에 이 머신에 추가 32G(DIMM 카드 2개, 머신에 이미 있는 것과 동일한 DIMM 카드 유형)를 추가하고 머신 부팅 후 를 확인하여 Configured Clock Speed변경 dmidecode되었음을 확인합니다.

그래서 에서 Configured Clock Speed으로 변경되었습니다 .2400MHz1866 MHz

예

새 DIMM을 추가하기 전에

dmidecode | grep "Configured Clock Speed"
        Configured Clock Speed: 2133 MHz
        Configured Clock Speed: 2133 MHz
        Configured Clock Speed: 2133 MHz
        Configured Clock Speed: 2133 MHz
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: 2133 MHz
        Configured Clock Speed: 2133 MHz
        Configured Clock Speed: 2133 MHz
        Configured Clock Speed: 2133 MHz
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown

새 DIMM을 추가한 후

  Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: 1866 MHz
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown
        Configured Clock Speed: Unknown

그렇다면 변경된 이유는 무엇일까요? , 왜 DIMM 메모리를 하나 추가했는데 Configured Clock Speed이렇게 바뀌었나요?

Server is Dell PowerEdge R730 and memories are:

Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 72 bits
    Data Width: 64 bits
    Size: 16384 MB
    Form Factor: DIMM
    Set: 3
    Locator: A9
    Bank Locator: Not Specified
    Type: DDR4
    Type Detail: Synchronous Registered (Buffered)
    Speed: 2400 MHz
    Manufacturer: 002C0632002C
    Serial Number: 1B42681B
    Asset Tag: 001808A0
    Part Number: 18ASF2G72PDZ-2G3D1
    Rank: 2
    Configured Clock Speed: 1866 MHz
    Minimum Voltage:  1.2 V
    Maximum Voltage:  1.2 V
    Configured Voltage:  1.2 V

답변1

서버에는 각각 12개의 DIMM 슬롯이 있는 2세트가 있습니다. 각 세트는 4개의 메모리 채널로 구성됩니다. 각 채널의 처음 두 DIMM 슬롯은 최대 2400MHz의 속도를 지원하지만 세 번째 슬롯은 1866MHz만 지원합니다. 세 번째 슬롯을 채우기 시작하면 모든 속도가 시스템에서 가장 낮은 속도로 떨어집니다. 자세한 내용은 사용 설명서를 확인하세요.

답변1

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