日期:2014-05-16  浏览次数:20806 次

Linux下判断cpu物理个数,几核,是超线程还是多核心

1. 查看物理CPU的个数
#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
?
2. 查看逻辑CPU的个数
#cat /proc/cpuinfo |grep "processor"|wc -l
?
3. 查看CPU是几核
#cat /proc/cpuinfo |grep "cores"|uniq
?
4. 查看CPU的主频
#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

(查看当前操作系统内核信息)


#?cat /etc/issue | grep Linux

Red Hat Enterprise Linux AS release 4 (Nahant Update 5)

(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??????????? E5410?? @ 2.33GHz

(看到有8个逻辑CPU, 也知道了CPU型号)


#?cat /proc/cpuinfo | grep physical | uniq -c

??????4?physical id????? : 0

??????4?physical id????? : 1

(说明实际上是两颗4核的CPU)