Linux下如何查看CPU資訊, 包括位元和多核資訊

Linux euis1 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 i686 i386 GNU/Linux

(查看當前作業系統核心資訊)

# cat /etc/issue | grep Linux

Red Hat Enterprise Linux AS release 4 (Nahant Update 5)

(查看當前作業系統發行版資訊)

# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c

      8  Intel(R) Xeon(R) CPU            E5410   @ 2.33GHz

(看到有8個邏輯CPU, 也知道了CPU型號)

# cat /proc/cpuinfo | grep physical | uniq -c

      4 physical id      : 0

      4 physical id      : 1

(說明實際上是兩顆4核的CPU)

# getconf LONG_BIT

32

(說明當前CPU運行在32bit模式下, 但不代表CPU不支援64bit)

# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l

8

(結果大於0, 說明支援64bit計算. lm指long mode, 支援lm則是64bit)

最後再完整看cpu物理資訊, 不過大部分我們都不關心而已.

 

  Processor Information 
                Socket Designation: CPU 1 
                Type: Central Processor 
                Family: Xeon 
                Manufacturer: Intel             
                ID: 7A 06 01 00 FF FB EB BF 
                Signature: Type 0, Family 6, Model 17, Stepping A 
                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) 
                        SBF (Signal break on FERR) 
                Version: Intel(R) Xeon(R) CPU           E5410 @ 2.33GHz     
                Voltage: 1.2 V 
                External Clock: 333 MHz 
                Max Speed: 2333 MHz 
                Current Speed: 2333 MHz 
                Status: Populated, Enabled 
                Upgrade: 
                L1 Cache Handle: 0x0005 
                L2 Cache Handle: 0x0006 
                L3 Cache Handle: 0x0007 
                Serial Number: To Be Filled By O.E.M. 
                Asset Tag: To Be Filled By O.E.M. 
                Part Number: To Be Filled By O.E.M. 
-- 
        Processor Information 
                Socket Designation: CPU 2 
                Type: Central Processor 
                Family: Xeon 
                Manufacturer: Intel             
                ID: 7A 06 01 00 FF FB EB BF 
                Signature: Type 0, Family 6, Model 17, Stepping A 
                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) 
                        SBF (Signal break on FERR) 
                Version: Intel(R) Xeon(R) CPU           E5410 @ 2.33GHz     
                Voltage: 1.2 V 
                External Clock: 333 MHz 
                Max Speed: 2333 MHz 
                Current Speed: 2333 MHz 
                Status: Populated, Enabled 
                Upgrade: 
                L1 Cache Handle: 0x0009 
                L2 Cache Handle: 0x000A 
                L3 Cache Handle: 0x000B 
                Serial Number: To Be Filled By O.E.M. 
                Asset Tag: To Be Filled By O.E.M. 
                Part Number: To Be Filled By O.E.M.

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