Características hardware: dmidecode usage

dmidecode es un comando que permite obtener información del hardware de un equipo. Realmente lo que hace es consultar la BIOS y presentar la información en formato legible. Permite obtener información de prácticamente todo el hardware del equipo, como puede ser desde el tipo de CPU hasta el máximo de memoria RAM que admite la placa con la que trabajamos. A continuación os dejo todos los tipos de datos que se pueden obtener y veremos también algún ejemplo de uso.
Type   Information
 0     BIOS
 1     System
 2     Base Board
 3     Chassis
 4     Processor
 5     Memory Controller
 6     Memory Module
 7     Cache
 8     Port Connector
 9     System Slots
10     On Board Devices
11     OEM Strings
12     System Configuration Options
13     BIOS Language
14     Group Associations
15     System Event Log
16     Physical Memory Array
17     Memory Device
18     32-bit Memory Error
19     Memory Array Mapped Address
20     Memory Device Mapped Address
21     Built-in Pointing Device
22     Portable Battery
23     System Reset
24     Hardware Security
25     System Power Controls
26     Voltage Probe
27     Cooling Device
28     Temperature Probe
29     Electrical Current Probe
30     Out-of-band Remote Access
31     Boot Integrity Services
32     System Boot
33     64-bit Memory Error
34     Management Device
35     Management Device Component
36     Management Device Threshold Data
37     Memory Channel
38     IPMI Device
39     Power Supply
40     Additional Information
41     Onboard Device
Para usarlo, simplemente debemos indicar de qué tipo queremos la información y la podremos obtener. En caso de que no solicitemos un tipo concreto, el comando nos mostrará toda la información disponible.
  • Memoria
    shell> dmidecode -t 16
    # dmidecode 2.9
    SMBIOS 2.5 present.
    
    Handle 0x0005, DMI type 16, 15 bytes
    Physical Memory Array
     Location: System Board Or Motherboard
     Use: System Memory
     Error Correction Type: Single-bit ECC
     Maximum Capacity: 32 GB
     Error Information Handle: Not Provided
     Number Of Devices: 6
    
  • Slots del sistema
    shell> dmidecode -t 9
    # dmidecode 2.9
    SMBIOS 2.5 present.
    
    Handle 0x001D, DMI type 9, 13 bytes
    System Slot Information
     Designation: PCIE SAS
     Type: x4 PCI Express
     Current Usage: Available
     Length: Long
     ID: 1
     Characteristics:
      3.3 V is provided
    
    Handle 0x001E, DMI type 9, 13 bytes
    System Slot Information
     Designation: System Slot 1
     Type: x8 PCI Express
     Current Usage: In Use
     Length: Long
     ID: 2
     Characteristics:
      3.3 V is provided
    
    Handle 0x001F, DMI type 9, 13 bytes
    System Slot Information
     Designation: System Slot 2
     Type: x8 PCI Express
     Current Usage: In Use
     Length: Long
     ID: 3
     Characteristics:
      3.3 V is provided
    
  • Procesador
    shell> dmidecode -t 4 
    # dmidecode 2.9
    SMBIOS 2.5 present.
    
    Handle 0x0001, DMI type 4, 40 bytes
    Processor Information
     Socket Designation: Node 1 Socket 1
     Type: Central Processor
     Family: Xeon
     Manufacturer: Intel(R) Corporation
     ID: E5 06 01 00 FF FB EB BF
     Signature: Type 0, Family 6, Model 30, Stepping 5
     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 (Fast floating-point save and restore)
      SSE (Streaming SIMD extensions)
      SSE2 (Streaming SIMD extensions 2)
      SS (Self-snoop)
      HTT (Hyper-threading technology)
      TM (Thermal monitor supported)
      PBE (Pending break enabled)
     Version: Intel(R) Xeon(R) CPU           X3430  @ 2.40GHz
     Voltage: 1.2 V
     External Clock: 4800 MHz
     Max Speed: 4000 MHz
     Current Speed: 2400 MHz
     Status: Populated, Enabled
     Upgrade: ZIF Socket
     L1 Cache Handle: 0x0003
     L2 Cache Handle: 0x0004
     L3 Cache Handle: 0x0002
     Serial Number: Not Specified
     Asset Tag: Not Specified
     Part Number: Not Specified
     Core Count: 4
     Core Enabled: 4
     Thread Count: 4
     Characteristics:
      64-bit capable
    



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