Use the dmidecode command to see the hardware information of an RHEL server running. On Linux-based systems, you can extract most of the system and hardware information from the /proc file system. Run the commands shown below as a root user or superuser to find the system and hardware information.
Memory Information
Run any one of the following commands to see memory information:
[root@dbappweb ~]# dmidecode -t memory # dmidecode 2.12 SMBIOS 2.8 present. Handle 0x1000, DMI type 16, 23 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: Multi-bit ECC Maximum Capacity: 1536 GB Error Information Handle: Not Provided Number Of Devices: 24 Handle 0x1100, DMI type 17, 40 bytes Memory Device Array Handle: 0x1000 Error Information Handle: Not Provided Total Width: 72 bits Data Width: 64 bits Size: 16384 MB Form Factor: DIMM Set: 1 Locator: A1 Bank Locator: Not Specified Type: DDR4 Type Detail: Synchronous Registered (Buffered) Speed: 2133 MHz Manufacturer: 00AD00B300AD Serial Number: 250ED5XX Asset Tag: 00154130 Part Number: HMA42GR7MFR4N-TF Rank: 2 Configured Clock Speed: 1866 MHz Minimum Voltage: 1.2 V ...
[root@dbappweb ~]# cat /proc/meminfo MemTotal: 98956160 kB MemFree: 2401504 kB Buffers: 898764 kB Cached: 90163996 kB SwapCached: 2396 kB Active: 77088136 kB Inactive: 15590464 kB Active(anon): 10851864 kB Inactive(anon): 839032 kB Active(file): 66236272 kB Inactive(file): 14751432 kB Unevictable: 5220 kB Mlocked: 5220 kB SwapTotal: 100663292 kB SwapFree: 100639016 kB Dirty: 88 kB Writeback: 0 kB AnonPages: 1618864 kB ...
System Information
Use this command to see the system-related information:
[root@dbappweb ~]# dmidecode -t system # dmidecode 2.12 SMBIOS 2.8 present. Handle 0x0100, DMI type 1, 27 bytes System Information Manufacturer: Dell Inc. Product Name: PowerEdge R730 Version: Not Specified Serial Number: 3890YXX UUID: 4C4C4544-0038-3910-8030-B3C04F594332 Wake-up Type: Power Switch SKU Number: SKU=NotProvided;ModelName=PowerEdge R730 Family: Not Specified Handle 0x0C00, DMI type 12, 5 bytes System Configuration Options Option 1: NVRAM_CLR: Clear user settable NVRAM areas and set defaults Option 2: PWRD_EN: Close to enable password Handle 0x2000, DMI type 32, 11 bytes System Boot Information Status: No errors detected
BIOS Information
To see BIOS-related information use the below command:
[root@dbappweb ~]# dmidecode -t bios # dmidecode 2.12 SMBIOS 2.8 present. Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: Dell Inc. Version: 2.0.1 Release Date: 02/12/2016 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 16384 kB Characteristics: ISA is supported PCI is supported PNP is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported EDD is supported Japanese floppy for Toshiba 1.2 MB is supported (int 13h) 5.25"/360 kB floppy services are supported (int 13h) 5.25"/1.2 MB floppy services are supported (int 13h) 3.5"/720 kB floppy services are supported (int 13h) 8042 keyboard services are supported (int 9h) Serial services are supported (int 14h) CGA/mono video services are supported (int 10h) ACPI is supported USB legacy is supported BIOS boot specification is supported Function key-initiated network boot is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 2.0 Handle 0x0D00, DMI type 13, 22 bytes BIOS Language Information Language Description Format: Long Installable Languages: 1 en|US|iso8859-1 Currently Installed Language: en|US|iso8859-1
Processor Information
Run any one of the following commands to see processor and CPU information:
[root@dbappweb ~]# dmidecode -t processor # dmidecode 2.12 SMBIOS 2.8 present. Handle 0x0400, DMI type 4, 42 bytes Processor Information Socket Designation: CPU1 Type: Central Processor Family: Xeon Manufacturer: Intel 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 E5-2620 v3 @ 2.40GHz Voltage: 1.3 V External Clock: 8000 MHz Max Speed: 4000 MHz Current Speed: 2400 MHz Status: Populated, Enabled ...
[root@dbappweb ~]# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 63 model name : Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz stepping : 2 microcode : 54 cpu MHz : 2400.059 cache size : 15360 KB physical id : 0 siblings : 12 core id : 0 cpu cores : 6 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 15 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm cqm_llc cqm_occup_llc bogomips : 4800.11 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 63 ...
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