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linux下查看CPU是幾核的

linux下查看cpu是幾核的

查看有幾個(gè)CPU

more?/proc/cpuinfo?|grep?"physical?id"|uniq|wc?-l

每個(gè)cpu是幾核（假設(shè)cpu配置相同）

more?/proc/cpuinfo?|grep?"physical?id"|grep?"0"|wc?-l cat?/proc/cpuinfo?|?grep?processor

1. 查看物理CPU的個(gè)數(shù)

#cat?/proc/cpuinfo?|grep?"physical?id"|sort?|uniq|wc?-l

2. 查看邏輯CPU的個(gè)數(shù)

#cat?/proc/cpuinfo?|grep?"processor"|wc?-l

3. 查看CPU是幾核

#cat?/proc/cpuinfo?|grep?"cores"|uniq

4. 查看CPU的主頻

#cat?/proc/cpuinfo?|grep?MHz|uniq #?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(dāng)前操作系統(tǒng)內(nèi)核信息)

#?cat?/etc/issue?|?grep?Linux Red?Hat?Enterprise?Linux?AS?release?4?(Nahant?Update?5)

(查看當(dāng)前操作系統(tǒng)發(fā)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(gè)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(shí)際上是兩顆4核的CPU)

#?getconf?LONG_BIT 32

(說明當(dāng)前CPU運(yùn)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(jié)果大于0, 說明支持64bit計(jì)算. lm指long mode, 支持lm則是64bit)