Bagaimana cara memeriksa latensi ram?

Saya perlu membeli RAM baru.

• Pertama, saya perlu tahu kecepatan >> selesai
• Kedua, saya perlu tahu latensi >> bagaimana?

Semua saya coba dari google.

dmidecode --type memory
dmidecode 2.11
dd if=/dev/zero of=/dev/sda2 bs=1G count=1 oflag=direct 
apt-get install hardinfo
apt-get install sysinfo
cat /proc/meminfo
cat /var/log/dmesg | grep Memory
decode-dimms
update-pciids
lshw -C memory | grep clock
apt-get install lshw
lshw -C memory

Silakan gunakan perintah 1:

sudo dmidecode -t 17 or dmidecode -t memory

output untuk perintah 1:

# dmidecode 2.11
SMBIOS 2.6 present.

Handle 0x000E, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x000D
    Error Information Handle: No Error
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: SODIMM
    Set: 1
    Locator: M1
    Bank Locator: Bank 0
    Type: DDR3
    Type Detail: Synchronous
    Speed: 1334 MHz
    Manufacturer: 830B            
    Serial Number: DBC8287D        
    Asset Tag: 1012
    Part Number: NT2GC64B8HC0NS-CG 
    Rank: Unknown
---------------------------------------
output command 2


# dmidecode 2.11
SMBIOS 2.6 present.

Handle 0x000D, DMI type 16, 15 bytes
Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: None
    Maximum Capacity: 16 GB
    Error Information Handle: Not Provided
    Number Of Devices: 4

Handle 0x000E, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x000D
    Error Information Handle: No Error
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: SODIMM
    Set: 1
    Locator: M1
    Bank Locator: Bank 0
    Type: DDR3
    Type Detail: Synchronous
    Speed: 1334 MHz
    Manufacturer: 830B            
    Serial Number: DBC8287D        
    Asset Tag: 1012
    Part Number: NT2GC64B8HC0NS-CG 
    Rank: Unknown

Handle 0x000F, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x000D
    Error Information Handle: No Error
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 4096 MB
    Form Factor: SODIMM
    Set: 1
    Locator: M2
    Bank Locator: Bank 1
    Type: DDR3
    Type Detail: Synchronous
    Speed: 1334 MHz
    Manufacturer: 0198            
    Serial Number: A30EEB39        
    Asset Tag: 1044
    Part Number: 9905428-012.A00LF 
    Rank: Unknown

Handle 0x0010, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x000D
    Error Information Handle: No Error
    Total Width: Unknown
    Data Width: Unknown
    Size: No Module Installed
    Form Factor: SODIMM
    Set: 1
    Locator: M3
    Bank Locator: Bank 2
    Type: DDR3
    Type Detail: Synchronous
    Speed: Unknown
    Manufacturer:                 
    Serial Number:                 
    Asset Tag:     
    Part Number:                   
    Rank: Unknown

Handle 0x0011, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x000D
    Error Information Handle: No Error
    Total Width: Unknown
    Data Width: Unknown
    Size: No Module Installed
    Form Factor: SODIMM
    Set: 1
    Locator: M4
    Bank Locator: Bank 3
    Type: DDR3
    Type Detail: Synchronous
    Speed: Unknown
    Manufacturer:                 
    Serial Number:                 
    Asset Tag:     
    Part Number:                   
    Rank: Unknown

Apa itu Latency?

Keterlambatan pengiriman data antara RAM komputer dan prosesornya. Karena RAM tidak selalu cepat dibandingkan dengan prosesor komputer, latensi RAM dapat terjadi, menyebabkan penundaan antara waktu perangkat keras komputer mengenali perlunya akses RAM (memulai permintaan data) dan waktu data atau instruksi tersedia untuk prosesor. Jika CPU meminta data yang tidak disimpan dalam cache, maka itu harus menunggu RAM untuk mengambil data, membuka pintu untuk masalah latensi.

Di mana memeriksa Latency RAM?

Untuk Ubuntu instal paket i2c-toolsdan jalankan

sudo modprobe eeprom
decode-dimms

Sumber: Forum Ubuntu & Sumber Utama

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