【查看系统内存空间】
引用
free -m
total used free shared buffers cached
Mem: 3500 637 2863 0 51 290
-/+ buffers/cache: 294 3205
Swap: 7999 0 7999
以MB为单位显示内存空间，“Mem”后的total列就是内存大小。3500实际就是4GB。
【查看内存插槽和内存条】
引用
dmidecode --type memory
# dmidecode 2.11
SMBIOS 2.7 present.
Handle 0x0040, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 32 GB ##硬件能够支持的最大量
Error Information Handle: Not Provided
Number Of Devices: 4 ##内存插槽数量
Handle 0x0042, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB ##内存条空间
Form Factor: DIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0 ##插槽位置编号
Type: DDR3 ##内存条类型
Type Detail: Synchronous
Speed: 1333 MHz ##内存条主频
Manufacturer: Kingston ##内存条厂商
Serial Number: 9B369A8C
Asset Tag: 9876543210
Part Number: 99P5474-055.A00LF
Rank: 1
Configured Clock Speed: 1333 MHz
Handle 0x0044, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed ##插槽没安装内存条
Form Factor: DIMM
Set: None
Locator: ChannelA-DIMM1
Bank Locator: BANK 1
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: [Empty]
Serial Number: [Empty]
Asset Tag: 9876543210
Part Number: [Empty]
Rank: Unknown
Configured Clock Speed: Unknown
【查看磁盘及分区情况】
引用
fdisk -l
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes ##磁盘sda空间1TB，分三个区
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x0002cb39
Device Boot Start End Blocks Id System
/dev/sda1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 26 1046 8192000 82 Linux swap / Solaris
/dev/sda3 1046 121602 968364032 83 Linux
【查看磁盘分区挂载情况】
对照fdisk -l可以看到各分区空间分别挂载到了哪个目录下、是否有磁盘分区未挂载使用。
引用
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 910G 5.1G 858G 1% / ##磁盘sda最大分区sda3挂载在根目录下910GB
tmpfs 1.8G 72K 1.8G 1% /dev/shm
/dev/sda1 194M 32M 152M 18% /boot
【查看硬盘硬件信息】
引用
smartctl --all /dev/sda
如果此工具命令不支持可以使用hdparm -i /dev/sda查看型号，建议安装此工具
smartctl 5.43 2012-06-30 r3573 [i686-linux-2.6.32-431.el6.i686] (local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda (SATA 3Gb/s, 4K Sectors) ##厂商
Device Model: ST1000DM003-1ER162 ##型号
Serial Number: W4Y4PK8N ##序列号
LU WWN Device Id: 5 000c50 08a8951c8
Firmware Version: CC46
User Capacity: 1,000,204,886,016 bytes [1.00 TB] ##空间
Sector Sizes: 512 bytes logical, 4096 bytes physical
Device is: In smartctl database [for details use: -P show]
ATA Version is: 8
ATA Standard is: ACS-2 (unknown minor revision code: 0x001f)
Local Time is: Fri Jan 12 14:19:32 2018 CST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
如果有RAID卡，参考http://blog.csdn.net/msdnchina/article/details/52475383
【查看CPU硬件信息】
引用
dmidecode --type processor
# dmidecode 2.11
SMBIOS 2.7 present.
Handle 0x0041, DMI type 4, 42 bytes
Processor Information
Socket Designation: SOCKET 0 ##插槽0
Type: Central Processor
Family: Pentium ##家族系列
Manufacturer: Intel(R) Corporation ##制造商
ID: A7 06 02 00 FF FB EB BF
Signature: Type 0, Family 6, Model 42, Stepping 7
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Pentium(R) CPU G860 @ 3.00GHz ##CPU型号
Voltage: 5.0 V 3.3 V 2.9 V
External Clock: 100 MHz
Max Speed: 3800 MHz
Current Speed: 3000 MHz
Status: Populated, Enabled
Upgrade: Socket BGA1155
L1 Cache Handle: 0x003E
L2 Cache Handle: 0x003D
L3 Cache Handle: 0x003F
Serial Number: Not Specified
Asset Tag: Fill By OEM
Part Number: Fill By OEM
Core Count: 2 ##核心总数
Core Enabled: 2 ##线程总数
Thread Count: 2
Characteristics:
64-bit capable ##是否支持64位
下面是另外一台服务器的CPU信息。
# dmidecode 2.11
SMBIOS 2.8 present.
# SMBIOS implementations newer than version 2.7 are not
# fully supported by this version of dmidecode.
Handle 0x0016, DMI type 4, 42 bytes
Processor Information
Socket Designation: CPU01 ##CPU1
Type: Central Processor
Family: Xeon ##至强
Manufacturer: Intel(R) Corporation
ID: F2 06 03 00 FF FB EB BF
Signature: Type 0, Family 6, Model 63, Stepping 2
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Xeon(R) CPU E5-2609 v3 @ 1.90GHz ##型号Xeon E5-2609 v3
Voltage: 1.8 V
External Clock: 100 MHz
Max Speed: 3500 MHz
Current Speed: 1900 MHz
Status: Populated, Enabled
Upgrade: <OUT OF SPEC>
L1 Cache Handle: 0x0013
L2 Cache Handle: 0x0014
L3 Cache Handle: 0x0015
Serial Number: Not Specified
Asset Tag: UNKNOWN
Part Number: Not Specified
Core Count: 6 ##六核
Core Enabled: 6
Thread Count: 6 ##六线程
Characteristics:
64-bit capable
Multi-Core
Hardware Thread
Execute Protection
Enhanced Virtualization
Power/Performance Control
Handle 0x001B, DMI type 4, 42 bytes
Processor Information
Socket Designation: CPU02 ##第二个CPU
Type: Central Processor
Family: Xeon
Manufacturer: Intel(R) Corporation
ID: F2 06 03 00 FF FB EB BF
Signature: Type 0, Family 6, Model 63, Stepping 2
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Xeon(R) CPU E5-2609 v3 @ 1.90GHz
Voltage: 1.8 V
External Clock: 100 MHz
Max Speed: 3500 MHz
Current Speed: 1900 MHz
Status: Populated, Enabled
Upgrade: <OUT OF SPEC>
L1 Cache Handle: 0x0018
L2 Cache Handle: 0x0019
L3 Cache Handle: 0x001A
Serial Number: Not Specified
Asset Tag: UNKNOWN
Part Number: Not Specified
Core Count: 6
Core Enabled: 6
Thread Count: 6
Characteristics:
64-bit capable
Multi-Core
Hardware Thread
Execute Protection
Enhanced Virtualization
Power/Performance Control
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