linux下dmidecode命令查看内存型...-linux下查看内存条数及每根内...-linux下查看CPU，内存，机器型号，网卡等信息的方法

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▪linux下dmidecode命令查看内存型号的方法机器主板是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.........

▪linux下查看内存条数及每根内存大小的方法在linux系统中，查看内存条个数，及每根内存的大小，可以使用dmidecode命令。如下：代码示例: #dmidecode | grep -A16 "Memory Device$" 输出结果： Memory Device #存储设备 Array Handle: 0x1000 #阵列处理 Er.........

▪linux下查看CPU，内存，机器型号，网卡等信息的方法 1，查看CPU信息（型号）代码示例: # cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c 8 Intel(R) Xeon(R) CPU E5410 @ 2.33GHz (看到有8个逻辑CPU, 也知道了CPU型号) # cat /proc/cpui.........

[1]linux下dmidecode命令查看内存型号的方法

来源: 互联网发布时间: 2013-12-24

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
SMBIOS 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。

最大支持内存为8G，有4个内存设备。最后则列出具体的4个内存设备，其中发现了一个内存设备为512M，类型Type：DDR2，工作频率Speed: 533 MHz (1.9 ns)。这个就我
目前电脑上的那根内存条。

[2]linux下查看内存条数及每根内存大小的方法

来源: 互联网发布时间: 2013-12-24

在linux系统中，查看内存条个数，及每根内存的大小，可以使用dmidecode命令。

如下：

代码示例:

#dmidecode | grep -A16 "Memory Device$"

输出结果：

Memory Device #存储设备
Array Handle: 0x1000 #阵列处理
Error Information Handle: Not Provided #错误信息的处理：不提供
Total Width: 72 bits #总宽度： 72位
Data Width: 64 bits #数据宽度： 64位
Size: 1024 MB #大小
Form Factor:
Set: 1
Locator: DIMM1
Bank Locator: Not Specified
Type:
Type Detail: Synchronous #输入详细信息：同步
Speed: 667 MHz (1.5 ns) #速度： 667兆赫（ 1.5纳秒）
Manufacturer: 80AD7FB380AD #制造商
Serial Number: 42600700 #序号
Asset Tag: 010910
Part Number: HYMP112F72CP8D3-Y5
--
//by www.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor:
Set: 1
Locator: DIMM2
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns)
Manufacturer: 80AD7FB380AD
Serial Number: 42600213
Asset Tag: 010910
Part Number: HYMP112F72CP8D3-Y5
--
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor:
Set: 2
Locator: DIMM3
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns)
Manufacturer: 855185518551
Serial Number: 0503BE1A
Asset Tag: 4C0838
Part Number: 72T128401EFA3SC2
--
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor:
Set: 2
Locator: DIMM4
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns)
Manufacturer: 855185518551
Serial Number: 0503BF1F
Asset Tag: 4C0838
Part Number: 72T128401EFA3SC2
--
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor:
Set: 3
Locator: DIMM5
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
--
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor:
Set: 3
Locator: DIMM6
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
--
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor:
Set: 4
Locator: DIMM7
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
--//by www.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor:
Set: 4
Locator: DIMM8
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:

然后，用free命令查看当前内存的使用情况：

代码示例:

# free -m
total used free shared buffers cached
Mem: 4054 2963 1090 0 144 1272
-/+ buffers/cache: 1547 2506
Swap: 4094 0 4094

[3]linux下查看CPU，内存，机器型号，网卡等信息的方法

来源: 互联网发布时间: 2013-12-24

1，查看CPU信息（型号）

代码示例:

# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
8 Intel(R) Xeon(R) CPU E5410 @ 2.33GHz
(看到有8个逻辑CPU, 也知道了CPU型号)

# cat /proc/cpuinfo | grep physical | uniq -c
4 physical id : 0
4 physical id : 1
(说明实际上是两颗4核的CPU)
# 其实是可能有超线程HT技术，不一定是有4核，也可能是2核4线程。

# getconf LONG_BIT
32
(说明当前CPU运行在32bit模式下, 但不代表CPU不支持64bit)

# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l
8
(结果大于0, 说明支持64bit计算. lm指long mode, 支持lm则是64bit)

完整查看cpu详细信息。
# dmidecode | grep -A81 'Processor Information'

2，查看主板型号：

代码示例:

# dmidecode |grep -A16 "System Information$"

3，内存槽及内存条：

代码示例:

# dmidecode |grep -A16 "Memory Device$"

4，查看内存信息

代码示例:

# cat /proc/meminfo

5，其它

代码示例:

# uname -a
Linux euis1 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 i686 i386 GNU/Linux
(查看当前操作系统内核信息)

# cat /etc/issue | grep Linux
Red Hat Enterprise Linux AS release 4 (Nahant Update 5)
(查看当前操作系统发行版信息)

查看机器型号
# dmidecode | grep "Product Name"

查看网卡信息
# dmesg | grep -i eth

# mii-tool

硬盘：
# fdisk -l
# smartctl -a /dev/sda

就介绍这些吧，对于linux系统而言，通过命令获知以上信息足够了，对于了解系统的硬件情况，已经很全面了。
有兴趣的朋友，在自己的linux下测试下吧，只有多练习，linux命令才会掌握的更快、更好哦。