linux内存插槽

❶ linux怎么查看内存型号

因为网站开发的需求，需要对单位的服务器内存进行升级。那么在linux中怎么查看内存型号呢?下面跟着我一起来了解一下吧。

linux怎么查看内存型号

机器主板是nVidia Corporation MCP61，系统内存支持双通道内存技术。

配置了4个DDRII DIMM插槽，支持DDRII 800/667/533内存，最大支持8G容量。

为了尝试下双通道内存技术，准备加一条与原来完全一样的内存条。

电脑配置上只写了kingston DDRII512M。

接下来就要用工具dmidecode(DMI table decoder)确定下内存频率了。

dmidecode命令可以全面的显示你系统的信息，包括bios、 cpu 、内存等信息。

例如：

[root@localhost testcase]$ sudo dmidecode --help

Usage: dmidecode [OPTIONS]

Options are:

-d, --dev-mem FILE Read memory from device FILE (default: /dev/mem)

-h, --help Display this help text and exit

-q, --quiet Less verbose output

-s, --string KEYWORD Only display the value of the given DMI string

-t, --type TYPE Only display the entries of given type

-u, --mp Do not decode the entries

-V, --version Display the version and exit

[root@localhost testcase]$ sudo dmidecode -t memory

# dmidecode 2.7

SM BIOS 2.4 present.

Handle 0x0007, DMI type 5, 24 bytes.

Memory Controller Information

Error Detecting Method: 64-bit ECC

Error Correcting Capabilities:

None

Supported Interleave: One-way Interleave

Current Interleave: One-way Interleave

Maximum Memory Mole Size: 2048 MB

Maximum Total Memory Size: 8192 MB

Supported Speeds:

70 ns

60 ns

Supported Memory Types:

DIMM

SDRAM

Memory Mole Voltage: 3.3 V

Associated Memory Slots: 4

0x0008

0x0009

0x000A

0x000B

Enabled Error Correcting Capabilities:

None

Handle 0x0008, DMI type 6, 12 bytes.

Memory Mole Information

Socket Designation: DIMM0

Bank Connections: 0 1

Current Speed: Unknown

Type: ECC DIMM

Installed Size: 512 MB (Single-bank Connection)

Enabled Size: 512 MB (Single-bank Connection)

Error Status: OK

Handle 0x0009, DMI type 6, 12 bytes.

Memory Mole Information

Socket Designation: DIMM1

Bank Connections: None

Current Speed: Unknown

Type: Unknown

Installed Size: Not Installed

Enabled Size: Not Installed

Error Status: OK

Handle 0x000A, DMI type 6, 12 bytes.

Memory Mole Information

Socket Designation: DIMM2

Bank Connections: None

Current Speed: Unknown

Type: Unknown

Installed Size: Not Installed

Enabled Size: Not Installed

Error Status: OK

Handle 0x000B, DMI type 6, 12 bytes.

Memory Mole Information

Socket Designation: DIMM3

Bank Connections: None

Current Speed: Unknown

Type: Unknown

Installed Size: Not Installed

Enabled Size: Not Installed

Error Status: OK

Handle 0x0010, DMI type 16, 15 bytes.

Physical Memory Arroot

Location: System Board Or Motherboard

Use: System Memory

Error Correction Type: None

Maximum Capacity: 8 GB

Error Information Handle: Not Provided

Number Of Devices: 4

Handle 0x0012, DMI type 17, 27 bytes.

Memory Device

Arroot Handle: 0x0010

Error Information Handle: Not Provided

Total Width: 64 bits

Data Width: 72 bits

Size: 512 MB

Form Factor: DIMM

Set: None

Locator: DIMM0

Bank Locator: BANK0

Type: DDR2

Type Detail: Synchronous

Speed: 533 MHz (1.9 ns)

Manufacturer: Manufacturer0

Serial Number: SerNum0

Asset Tag: AssetTagNum0

Part Number: PartNum0

Handle 0x0014, DMI type 17, 27 bytes.

Memory Device

Arroot Handle: 0x0010

Error Information Handle: Not Provided

Total Width: Unknown

Data Width: 64 bits

Size: No Mole Installed

Form Factor: DIMM

Set: None

Locator: DIMM1

Bank Locator: BANK1

Type: Unknown

Type Detail: Unknown

Speed: Unknown

Manufacturer: Manufacturer1

Serial Number: SerNum1

Asset Tag: AssetTagNum1

Part Number: PartNum1

Handle 0x0016, DMI type 17, 27 bytes.

Memory Device

Arroot Handle: 0x0010

Error Information Handle: Not Provided

Total Width: Unknown

Data Width: 64 bits

Size: No Mole Installed

Form Factor: DIMM

Set: None

Locator: DIMM2

Bank Locator: BANK2

Type: Unknown

Type Detail: Unknown

Speed: Unknown

Manufacturer: Manufacturer2

Serial Number: SerNum2

Asset Tag: AssetTagNum2

Part Number: PartNum2

Handle 0x0018, DMI type 17, 27 bytes.

Memory Device

Arroot Handle: 0x0010

Error Information Handle: Not Provided

Total Width: Unknown

Data Width: 64 bits

Size: No Mole Installed

Form Factor: DIMM

Set: None

Locator: DIMM3

Bank Locator: BANK3

Type: Unknown

Type Detail: Unknown

Speed: Unknown

Manufacturer: Manufacturer3

Serial Number: SerNum3

Asset Tag: AssetTagNum3

Part Number: PartNum3

总结 ：

在Memory Controller Information中，可以看到最大的内存大小是8G，支持内存种类为DIMM和SDRAM。有四个Memory Slots。对应接下来的4个Memory Mole Information。

DMI type 16 (man dmidecode里面有DMI TYPES specification)的意思是 Physical Memory Arroot。

❷ linux如何查看内存信息

查看内存信息（显示插槽个数和每个插槽里内存条的大小）
dmidecode -t memory | grep Size

查看内存条厂家
dmidecode -t memory | grep Manufacturer

free 查看当前内存使用情况

❸ linux中查看物理内存和配置空间的命令是什么

linux中查看物理内存的命令是：dmidecode -t memory | grep Size。（如果没有安装dmidecode 需要先执行yum -y install dmidecode）

物理内存是没办法配置的，只能配置虚拟内存，在Linux系统即Swap分区，查看Swap分区的命令是：free -k 或者 free -m。m代表以MB为单位，k代表以KB为单位。

(3)linux内存插槽扩展阅读

dmidecode命令介绍

使用方法:

dmidecode [OPTIONS]

参数介绍:

-d, --dev-mem FILE 从设备文件读取内存(默认: /dev/mem)

-h, --help显示此帮助文本并退出。

-q, --quiet 减少详细输出。

-t, --type TYPE 仅显示给定类型的条目。

-V, --version 查看版本号。