查看物理CPU/内核数/线程数

方法1：

# dmidecode 命令

在结果中Processor Information部分，可以看到

Processor Information
        Socket Designation: Proc 1 #物理CPU1
        Type: Central Processor
        Family: Xeon
        Manufacturer: Intel
        ID: ......
        Signature: Type 0, Family 6, Model 45, Stepping 7
.....
        Core Count: 8
        Core Enabled: 8 #内核数
        Thread Count: 16 #线程数=内核数X2
        Characteristics:
                64-bit capable

Handle 0x0401, DMI type 4, 42 bytes
Processor Information
        Socket Designation: Proc 2 #物理CPU2
        Type: Central Processor
        Family: Xeon
        Manufacturer: Intel
        ID: ......
        Signature: Type 0, Family 6, Model 45, Stepping 7
......
        Core Count: 8
        Core Enabled: 8 #内核数
        Thread Count: 16 #线程数
        Characteristics:
                64-bit capable

总线程数=CPU1的线程数+CPU2的线程数

方法2：

查看物理CPU个数

# cat /proc/cpuinfo | grep 'physical id'| sort -u
physical id     : 0
physical id     : 1

查看每块CPU上内核数

# cat /proc/cpuinfo | grep 'core id'| sort -u | wc -l
8

查看总线程数

# cat /proc/cpuinfo | grep 'processor'| sort -u | wc -l
32

查看CPU型号

# dmidecode -s processor-version
 Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz       
 Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz