1. 查看物理CPU的个数
#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
1
2. 查看逻辑CPU的个数
#cat /proc/cpuinfo |grep "processor"|wc -l
8
3. 查看CPU是几核
#cat /proc/cpuinfo |grep "cores"|uniq
cpu cores : 4
4. 查看CPU的主频
#cat /proc/cpuinfo |grep MHz|uniq
cpu MHz : 1600.000
# uname -a
Linux 54acm 2.6.32-25-generic-pae #44-Ubuntu SMP Fri Sep 17 21:57:48 UTC 2010 i686 GNU/Linux
(查看当前操作系统内核信息)
# cat /etc/issue
Ubuntu 10.04 LTS
(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 E5620 @ 2.40GHz
(看到有8个逻辑CPU, 也知道了CPU型号)
# cat /proc/cpuinfo | grep physical | uniq -c
1 physical id : 1
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 1
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 1
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 1
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 1
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 1
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 1
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 1
1 address sizes : 40 bits physical, 48 bits virtual
(说明实际上是两颗4核的CPU)
# getconf LONG_BIT
32
(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 -l
8
(结果大于0, 说明支持64bit计算. lm指long mode, 支持lm则是64bit)
如何获得CPU的详细信息：
linux命令：cat /proc/cpuinfo
用命令判断几个物理CPU，几个核等：
逻辑CPU个数：
# cat /proc/cpuinfo | grep "processor" | wc -l
物理CPU个数：
# cat /proc/cpuinfo | grep "physical id" | sort | uniq | wc -l
每个物理CPU中Core的个数：
# cat /proc/cpuinfo | grep "cpu cores" | wc -l
是否为超线程？
如果有两个逻辑CPU具有相同的”core id”，那么超线程是打开的。
每个物理CPU中逻辑CPU(可能是core, threads或both)的个数：
# cat /proc/cpuinfo | grep "siblings"
siblings : 8
1.查看CPU信息命令
cat /proc/cpuinfo
2.查看内存信息命令
cat /proc/meminfo
3.查看硬盘信息命令
fdisk -l
