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This article mainly explains "linux how to check whether cpu is enabled hyperthreading", the content of the article is simple and clear, easy to learn and understand, now please follow the editor's train of thought slowly in depth, together to study and learn "linux how to check whether cpu is enabled hyperthreading" bar!

CPU's hyperthreading is set in bios. Centos7 is enabled by default. If the number of logical cores is twice the number of physical cores, hyperthreading is enabled.

[root@localhost ~] # cat / proc/cpuinfo | grep "physical id" | sort | uniq

Physical id: 0

Physical id: 1

[root@localhost ~] # cat / proc/cpuinfo | grep "cores" | uniq

Cpu cores: 10

[root@localhost ~] # cat / proc/cpuinfo | grep "processor" | wc-l

forty

40 = 10 * 2 * 2

Hyperthreading is enabled.

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