1、查看物理CPU的个数
[[email protected] ~]# cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
1
2、查看逻辑CPU的个数
[[email protected] ~]# cat /proc/cpuinfo |grep "processor"|wc -l
4
3、查看CPU是几核(即,核心数)
[[email protected] ~]# cat /proc/cpuinfo |grep "cores"|uniq
cpu cores : 4
4、查看CPU的主频
[[email protected] ~]# cat /proc/cpuinfo |grep MHz|uniq
cpu MHz : 2499.982
5、当前操作系统内核信息
[[email protected] ~]# uname -a
Linux MysqlCluster01 2.6.32-431.20.3.el6.x86_64 #1 SMP Thu Jun 19 21:14:45 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
6、当前操作系统发行版信息
[[email protected] ~]# cat /etc/issue
CentOS release 6.4 (Final)
Kernel \r on an \m
7、内存使用情况
[[email protected] ~]# free -m
total used free shared buffers cached
Mem: 7863 2738 5125 0 141 835
-/+ buffers/cache: 1761 6102
Swap: 3967 0 3967
其他命令:
[[email protected] ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
4 AMD Opteron(tm) Processor 6380
看到有8个逻辑CPU, 也知道了CPU型号
[[email protected] ~]# getconf LONG_BIT
64
说明当前CPU运行在64bit模式下
[[email protected] ~]# cat /proc/cpuinfo | grep flags | grep ‘ lm ‘ | wc -l
4
结果大于0, 说明支持64bit计算. lm指long mode, 支持lm则是64bit