几个cpu
more /proc/cpuinfo |grep "physical id"|uniq|wc -l
每个cpu是几核（假设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
# 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)
# 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)
原文：http://www.cnblogs.com/ibyte/p/6145508.html