題記：今天看到一篇關於查看CPU和操作系統信息的文章，轉過來和大家分享一下，O(∩_∩)O！
瞭解cpu架構 http://blog.csdn.net/wyzxg/archive/2009/12/17/5027738.aspx
前兩天簡單總結了cpu架構，今天總結下查看各種os系統的位數和cpu硬件支持的位數，因爲這些我們在日常工作中要經常用到的，作爲日常的一個備忘錄，總結下可以加強自己的記憶，也可以讓自己在總體上有個認識；每間隔一段時間就總結下，慢慢你會發現優點是大大滴啊
1.查看linux的操作系統和硬件cpu位數
linux 操作系統的位數查看
getconf LONG_BIT 如果是32表示是32位
eg:
[root@db ~]# getconf LONG_BIT
32
[root@db ~]# getconf WORD_BIT
32
或者通過cat /proc/cpuinfo也可以查看
再或者
[root@svr-db-test ~]# file /sbin/init
/sbin/init: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped
查看cpu硬件架構
在Linux中使用命令arch可以初步查看出當前系統所識別出來的機器CPU類型，
如"i386", "i486","i586", "alpha", "sparc", "arm", "m68k",
"mips", "ppc","ia64","x86_64"等；ia64和x86_64就說明這臺機器是64位的；
eg:
[root@db ~]# arch
i686
或者
[root@svr-db-test ~]# uname -m
x86_64
或者
[root@svr-db-test ~]# echo $HOSTTYPE
x86_64
2. 查看windows的操作系統和硬件cpu位數
Microsoft Windows XP [版本 5.1.2600]
(C) 版權所有 1985-2001 Microsoft Corp.
C:/Documents and Settings/Administrator>systeminfo
主機名: LUOBO-090566BDE
OS 名稱: Microsoft Windows XP Professional
OS 版本: 5.1.2600 Service Pack 3 Build 2600
OS 製造商: Microsoft Corporation
OS 配置: 獨立工作站
OS 構件類型: Multiprocessor Free
註冊的所有人: 微軟用戶
註冊的組織: 微軟中國
產品 ID: 76481-640-1464517-23673
初始安裝日期: 2009-9-2, 10:16:44
系統啓動時間: 0 天 0 小時 35 分 35 秒
系統製造商: Dell Inc.
系統型號: MXC061
系統類型: X86-based PC
處理器: 安裝了 1 個處理器。
[01]: x86 Family 6 Model 14 Stepping 12 GenuineIntel ~1728 Mhz
BIOS 版本: DELL - 27d70402
Windows 目錄: C:/WINDOWS
系統目錄: C:/WINDOWS/system32
啓動設備: /Device/HarddiskVolume1
系統區域設置: zh-cn;中文(中國)
輸入法區域設置: zh-cn;中文(中國)
時區: 暫缺
物理內存總量: 2,038 MB
可用的物理內存: 1,554 MB
虛擬內存: 最大值: 2,048 MB
虛擬內存: 可用: 1,992 MB
虛擬內存: 使用中: 56 MB
頁面文件位置: C:/pagefile.sys
域: WORKGROUP
登錄服務器: //LUOBO-090566BDE
修補程序: 安裝了 143 個修補程序。
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3. AIX查看硬件cpu位數和os位數
顯示機器硬件是32位還是64位
# bootinfo -y
64
查看aix操作系統是32位還是64位
# bootinfo -K
64
PS：原文地址--http://blog.csdn.net/wyzxg/archive/2009/12/22/5054617.aspx
本文來自CSDN博客，轉載請標明出處：http://blog.csdn.net/tcsbupt/archive/2010/07/14/5733885.aspx
Linux下如何查看CPU信息, 包括位數和多核信息
# uname -a
Linux euis1 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 i686 i386 GNU/Linux
(查看當前操作系統內核信息)
# cat /etc/issue | grep Linux
Red Hat Enterprise Linux AS release 4 (Nahant Update 5)
(查看當前操作系統發行版信息)
# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
8 Intel(R) Xeon(R) CPU E5410 @ 2.33GHz
(看到有8個邏輯CPU, 也知道了CPU型號)
# cat /proc/cpuinfo | grep physical | uniq -c
4 physical id : 0
4 physical id : 1
(說明實際上是兩顆4核的CPU)
# getconf LONG_BIT
32
(說明當前CPU運行在32bit模式下, 但不代表CPU不支持64bit)
# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l
8
(結果大於0, 說明支持64bit計算. lm指long mode, 支持lm則是64bit)
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最後再完整看cpu物理信息, 不過大部分我們都不關心而已.
# dmidecode | grep -A48 'Processor Information$'
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: <OUT OF SPEC>
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: <OUT OF SPEC>
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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本文來自CSDN博客，轉載請標明出處：http://blog.csdn.net/tqyou85/archive/2010/03/26/5418403.aspx