linux的devices在哪儿

linux的devices在哪儿,第1张

Linux 下所有的设备都是需要加载的

被加载的设备都是放在/dev这个目录下面

比如硬盘

mount /dev/sd 开头

推荐你看看Linux入门的书籍

Linux就该这么学

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, --dump 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 Module Size: 2048 MB

Maximum Total Memory Size: 8192 MB

Supported Speeds:

70 ns

60 ns

Supported Memory Types:

DIMM

SDRAM

Memory Module 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 Module 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 Module 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 Module 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 Module 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 Module 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 Module 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 Module 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 Module Information。

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


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原文地址: http://outofmemory.cn/yw/8466892.html

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