How to check whether Hyper Threading is enabled or not in Ubuntu?

Question

I am using the Ubuntu. How can I check whether Hyper Threading is enabled or not. And if it is disabled, how can I enable it?

Answer 1

You can check if HyperThreading is enable or not with

dmidecode -t processor|grep Count

if "Core Count" is the same as "Thread Count" ex:

Core Count: 32 Thread Count: 32

The HT is Disabled.

Else HT is Enabled.

Flag "HTT" shows the possibility of HyperThreading.