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