查看Linux服务器的CPU详细情况

• 具有相同core id的CPU是同一个core的超线程。 Any cpu with the same core id are hyper-threads in the same core.
• 具有相同physical id的cpu是同一个CPU封装的线程或核心。Any cpu with the same physical id are threads or cores in the same physical socket.

物理CPU个数如下所示：
cat /proc/cpuinfo | grep "physical id" | sort | uniq | wc -l

每个物理CPU中core的个数（即核数）：
cat /proc/cpuinfo | grep "cpu cores" | uniq

逻辑CPU的个数如下所示：
cat /proc/cpuinfo | grep "processor" | wc -l