Serge van Ginderachter

How do I know if I have multiple cpu’s, multi-cores, ore just hyper-threading?

look at /proc/cpuinfo and you will see:

cat /proc/cpuinfo | egrep “physical\ id|core\ id|cpu\ cores”
physical id : 0
core id : 0
cpu cores : 1
physical id : 0
core id : 0
cpu cores : 1

1. two CPUs in cpuinfo with the same physical id and core id ==> hyperthreading!
2. when you have all CPUs with different physical ids, than you have SMP
3. when you have CPUs with one physical id and different core ids – you have one multicore CPU.

and so on