幾個cpu
more /proc/cpuinfo |grep "physical id"|uniq|wc -l
每個cpu是幾核(假設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的個數
#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
2. 查看邏輯CPU的個數
#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
(結果大于0, 說明支持64bit計算. lm指long mode, 支持lm則是64bit)
如何獲得CPU的詳細信息:
linux命令:cat /proc/cpuinfo
用命令判斷幾個物理CPU,幾個核等:
邏輯CPU個數:
# cat /proc/cpuinfo | grep "processor" | wc -l
物理CPU個數:
# cat /proc/cpuinfo | grep "physical id" | sort | uniq | wc -l
每個物理CPU中Core的個數:
# cat /proc/cpuinfo | grep "cpu cores" | wc -l
是否為超線程?
如果有兩個邏輯CPU具有相同的”core id”,那么超線程是打開的。
每個物理CPU中邏輯CPU(可能是core, threads或both)的個數:
# cat /proc/cpuinfo | grep "siblings"
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