Linux基础如何找出你的系统所支持的最大内存.docx
- 文档编号:28587811
- 上传时间:2023-07-19
- 格式:DOCX
- 页数:23
- 大小:20.41KB
Linux基础如何找出你的系统所支持的最大内存.docx
《Linux基础如何找出你的系统所支持的最大内存.docx》由会员分享,可在线阅读,更多相关《Linux基础如何找出你的系统所支持的最大内存.docx(23页珍藏版)》请在冰豆网上搜索。
Linux基础如何找出你的系统所支持的最大内存
大多数情况下你可以从BIOS、产品目录或者干脆手动找出你的系统所持的最大内存。
这里,我们介绍一种简单有用的技巧——使用dmidecode来找出系统支持的最大内存,这样你就无需打开机箱或者参照BIOS和产品目录了。
什么是dmidecode?
就像你可能知道的一样,dmidecode是一个将计算机DMI(又名SMBIOS)表的内容转换为可读格式的工具。
这个表包含了系统硬件组件的介绍以及其他一些如序列号和IOS版本等有用的信息。
使用dmidecode你能够获取此项信息,而无需去探测真实的硬件。
找出你的系统所支持的最大内存
请确定你已经在系统中安装了dmidecode,我觉得你的操作系统应该已经自动安装过了,不过并不非常确定。
在基于Deb的系统中安装
sudoapt-getinstalldmidecode
在基于RPM的系统中安装
sudoyuminstalldmidecode
在SUSE/openSUSE中安装
sudozypperindmidecode
好了,我们已经安装了dmidecode,接下来让我们找出支持的最大内存。
输入以下命令:
sudodmidecode-t16
输出样本
#dmidecode2.12
SMBIOS2.6present.
Handle0x0014,DMItype16,15bytes
PhysicalMemoryArray
Location:
SystemBoardOrMotherboard
Use:
SystemMemory
ErrorCorrectionType:
None
MaximumCapacity:
16GB
ErrorInformationHandle:
NotProvided
NumberOfDevices:
2
就像你看到的,我的系统支持最大内存到16G,并且有两个内存插槽,简单吧?
接下来,让我们找出现在已经安装的内存的详细信息。
sudodmidecode-t17
输出样本
#dmidecode2.12
SMBIOS2.6present.
Handle0x0017,DMItype17,28bytes
MemoryDevice
ArrayHandle:
0x0014
ErrorInformationHandle:
0x0000
TotalWidth:
Unknown
DataWidth:
Unknown
Size:
NoModuleInstalled
FormFactor:
DIMM
Set:
None
Locator:
DIMM_B
BankLocator:
BANK2
Type:
Unknown
TypeDetail:
None
Speed:
Unknown
Manufacturer:
NotSpecified
SerialNumber:
NotSpecified
AssetTag:
NotSpecified
PartNumber:
NotSpecified
Rank:
Unknown
Handle0x0015,DMItype17,28bytes
MemoryDevice
ArrayHandle:
0x0014
ErrorInformationHandle:
0x0000
TotalWidth:
64bits
DataWidth:
64bits
Size:
4096MB
FormFactor:
SODIMM
Set:
None
Locator:
DIMM_A
BankLocator:
BANK0
Type:
DDR3
TypeDetail:
Synchronous
Speed:
1067MHz
Manufacturer:
014F
SerialNumber:
00092AF2
AssetTag:
54114000
PartNumber:
JM1066KSN-4G
Rank:
Unknown
就像上边输出的一样,我在插槽1里边安装了一个内存条。
内存大小为4G,类型为DDR3,速度为1067MHz。
同样的,我们可以通过下边命令得到完整的内存信息。
sudodmidecode-tmemory
sudodmidecode-tmemory|less
sudodmidecode-tmemory|more
输出样本
#dmidecode2.12
SMBIOS2.6present.
Handle0x0014,DMItype16,15bytes
PhysicalMemoryArray
Location:
SystemBoardOrMotherboard
Use:
SystemMemory
ErrorCorrectionType:
None
MaximumCapacity:
16GB
ErrorInformationHandle:
NotProvided
NumberOfDevices:
2
Handle0x0017,DMItype17,28bytes
MemoryDevice
ArrayHandle:
0x0014
ErrorInformationHandle:
0x0000
TotalWidth:
Unknown
DataWidth:
Unknown
Size:
NoModuleInstalled
FormFactor:
DIMM
Set:
None
Locator:
DIMM_B
BankLocator:
BANK2
Type:
Unknown
TypeDetail:
None
Speed:
Unknown
Manufacturer:
NotSpecified
SerialNumber:
NotSpecified
AssetTag:
NotSpecified
PartNumber:
NotSpecified
Rank:
Unknown
Handle0x0015,DMItype17,28bytes
MemoryDevice
ArrayHandle:
0x0014
ErrorInformationHandle:
0x0000
TotalWidth:
64bits
DataWidth:
64bits
Size:
4096MB
FormFactor:
SODIMM
Set:
None
Locator:
DIMM_A
BankLocator:
BANK0
Type:
DDR3
TypeDetail:
Synchronous
Speed:
1067MHz
Manufacturer:
014F
SerialNumber:
00092AF2
AssetTag:
54114000
PartNumber:
JM1066KSN-4G
Rank:
Unknown
如果你好奇想要知道整个系统的详细信息,例如主板、内存、BIOS等,那么可以输入以下命令来获取。
sudodmidecode
输出样本
#dmidecode2.12
SMBIOS2.6present.
48structuresoccupying2173bytes.
Tableat0x000EB840.
Handle0xDA00,DMItype218,251bytes
OEM-specificType
HeaderandData:
DAFB00DAB2000D5F0F37407D00000000
007E0001000000DC0100800200DD0100
8003007501018001007601028001002D
01038001002E01038000008101078000
00820107800100830108800000840108
80010085010680000086010680010058
02058000005702058001009C00020001
009B00020000008A0103000100890103
0000007F010400000080010400010053
01050000005201050001007B01060000
007C0106000100940107000000930107
0001007D00080000002D00090001002E
00090000006E000A00000095000B0001
0096000B0000002F020C00010030020C
00000050020D00000051020D00010052
020D000200FFFF00000000
Handle0xDA01,DMItype218,59bytes
OEM-specificType
HeaderandData:
DA3B01DAB2000D5F0F374053020D0003
0054020D00040056020D0005004B010E
0001004A010E000000EA000F000100EB
000F000000FFFF00000000
Handle0x0004,DMItype4,42bytes
ProcessorInformation
SocketDesignation:
CPU1
Type:
CentralProcessor
Family:
Corei3
Manufacturer:
Intel
ID:
A7060301FFFBABBE
Signature:
Type0,Family6,Model42,Stepping7
Flags:
FPU(Floating-pointuniton-chip)
VME(Virtualmodeextension)
DE(Debuggingextension)
PSE(Pagesizeextension)
TSC(Timestampcounter)
MSR(Modelspecificregisters)
PAE(Physicaladdressextension)
MCE(Machinecheckexception)
CX8(CMPXCHG8instructionsupported)
APIC(On-chipAPIChardwaresupported)
SEP(Fastsystemcall)
MTRR(Memorytyperangeregisters)
PGE(Pageglobalenable)
MCA(Machinecheckarchitecture)
CMOV(Conditionalmoveinstructionsupported)
PAT(Pageattributetable)
PSE-36(36-bitpagesizeextension)
CLFSH(CLFLUSHinstructionsupported)
DS(Debugstore)
ACPI(ACPIsupported)
MMX(MMXtechnologysupported)
FXSR(FXSAVEandFXSTORinstructionssupported)
SSE(StreamingSIMDextensions)
SSE2(StreamingSIMDextensions2)
SS(Self-snoop)
HTT(Multi-threading)
TM(Thermalmonitorsupported)
PBE(Pendingbreakenabled)
Version:
Intel(R)Core(TM)i3-2350MCPU@2.30GHz
Voltage:
1.1V
ExternalClock:
100MHz
MaxSpeed:
2300MHz
CurrentSpeed:
2300MHz
Status:
Populated,Enabled
Upgrade:
Other
L1CacheHandle:
0x0005
L2CacheHandle:
0x0006
L3CacheHandle:
0x0007
SerialNumber:
ToBeFilledByO.E.M.
AssetTag:
ToBeFilledByO.E.M.
PartNumber:
ToBeFilledByO.E.M.
CoreCount:
2
CoreEnabled:
1
ThreadCount:
2
Characteristics:
64-bitcapable
Handle0x0005,DMItype7,19bytes
CacheInformation
SocketDesignation:
L1-Cache
Configuration:
Enabled,NotSocketed,Level1
OperationalMode:
WriteBack
Location:
Internal
InstalledSize:
64kB
MaximumSize:
64kB
SupportedSRAMTypes:
Other
InstalledSRAMType:
Other
Speed:
Unknown
ErrorCorrectionType:
None
SystemType:
Unified
Associativity:
8-waySet-associative
Handle0x0006,DMItype7,19bytes
CacheInformation
SocketDesignation:
L2-Cache
Configuration:
Enabled,NotSocketed,Level2
OperationalMode:
VariesWithMemoryAddress
Location:
Internal
InstalledSize:
512kB
MaximumSize:
512kB
SupportedSRAMTypes:
Other
InstalledSRAMType:
Other
Speed:
Unknown
ErrorCorrectionType:
None
SystemType:
Unified
Associativity:
8-waySet-associative
Handle0x0007,DMItype7,19bytes
CacheInformation
SocketDesignation:
L3-Cache
Configuration:
Enabled,NotSocketed,Level3
OperationalMode:
VariesWithMemoryAddress
Location:
Internal
InstalledSize:
3072kB
MaximumSize:
3072kB
SupportedSRAMTypes:
Other
InstalledSRAMType:
Other
Speed:
Unknown
ErrorCorrectionType:
None
SystemType:
Unified
Associativity:
Other
Handle0x0008,DMItype8,9bytes
PortConnectorInformation
InternalReferenceDesignator:
J1A1
InternalConnectorType:
None
ExternalReferenceDesignator:
PS2Mouse
ExternalConnectorType:
PS/2
PortType:
MousePort
Handle0x0009,DMItype8,9bytes
PortConnectorInformation
InternalReferenceDesignator:
J1A1
InternalConnectorType:
None
ExternalReferenceDesignator:
Keyboard
ExternalConnectorType:
PS/2
PortType:
KeyboardPort
Handle0x000A,DMItype8,9bytes
PortConnectorInformation
InternalReferenceDesignator:
J2A2B
InternalConnectorType:
None
ExternalReferenceDesignator:
Video
ExternalConnectorType:
DB-15female
PortType:
VideoPort
Handle0x000B,DMItype8,9bytes
PortConnectorInformation
InternalReferenceDesignator:
J3A1
InternalConnectorType:
None
ExternalReferenceDesignator:
USB1
ExternalConnectorType:
AccessBus(USB)
PortType:
USB
Handle0x000C,DMItype8,9bytes
PortConnectorInformation
InternalReferenceDesignator:
J3A1
InternalConnectorType:
None
ExternalReferenceDesignator:
USB2
ExternalConnectorType:
AccessBus(USB)
PortType:
USB
Handle0x000D,DMItype8,9bytes
PortConnectorInformation
InternalReferenceDesignator:
J3A1
InternalConnectorType:
None
ExternalReferenceDesignator:
USB3
ExternalConnectorType:
AccessBus(USB)
PortType:
USB
Handle0x000E,DMItype8,9bytes
PortConnectorInformation
InternalReferenceDesignator:
J5A1
InternalConnectorType:
None
ExternalReferenceDesignator:
LAN
ExternalConnectorType:
RJ-45
PortType:
NetworkPort
Handle0x000F,DMItype9,17bytes
SystemSlotInformation
Designation:
J6B2
Type:
x16PCIExpress
CurrentUsage:
InUse
Length:
Long
ID:
0
Characteristics:
3.3Visprovided
Openingisshared
PMEsignalissupported
BusAddress:
0000:
00:
01.0
Handle0x0010,DMItype9,17bytes
SystemSlotInformation
Designation:
J6B1
Type:
x1PCIExpress
CurrentUsage:
InUse
Length:
Short
ID:
1
Characteristics:
3.3Visprovid
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- Linux 基础 如何 找出 系统 支持 最大 内存