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| 关键词： nbsp supported extension instruction CPU Page Processor Handle Filled physical |
Linux下如何查看CPU信息, 包括位数和多核信息 # uname -aLinux euis1 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 i686 i386 GNU/Linux(查看当前操作系统内核信息)# cat /etc/issue | grep LinuxRed Hat Enterprise Linux AS release 4 (Nahant Update 5)(查看当前操作系统发行版信息)# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c 8 Intel(R) Xeon(R) CPU E5410 @ 2.33GHz(看到有8个逻辑CPU, 也知道了CPU型号)# cat /proc/cpuinfo | grep physical | uniq -c 4 physical id : 0 4 physical id : 1(说明实际上是两颗4核的CPU)# getconf LONG_BIT32(说明当前CPU运行在32bit模式下, 但不代表CPU不支持64bit)# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l8(结果大于0, 说明支持64bit计算. lm指long mode, 支持lm则是64bit)..最后再完整看cpu物理信息, 不过大部分我们都不关心而已.# dmidecode | grep -A48 'Processor Information$' 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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