What are the rules for hyperthreaded CPUs?
Quoted 5 lines
Hi All,
My host has an i7-960 processor (4 cores, 8 hypterthreaded cores.)
/proc/cpuinfoon my host shows 8 processors.
Quoted 7 lines
On my Fedora Core 16 guest,
/proc/cpuinfoshows 4 processors.Question: what is the maximum number of processors I can assign to my guest? 4 or 8? What are the rules for Hyperthreading?
Many thanks,
-T
Figured it out. The max cores is the number of hyperthreaded cores (eight in my case).
My mistake was that in virt-manager, processor, I was not clicking on "Copy host CPU configuration" button. Without that, everything I tried to configure came out as single CPUs.
-T
Quoted 7 lines · Todd And Margo Chester
Quoted 7 lines
Hi All,
My host has an i7-960 processor (4 cores, 8 hypterthreaded cores.)
/proc/cpuinfoon my host shows 8 processors.On my Fedora Core 16 guest,
/proc/cpuinfoshows 4 processors.
Quoted 8 lines
Quoted 5 lines
Question: what is the maximum number of processors I can assign to my guest? 4 or 8? What are the rules for Hyperthreading?
Many thanks,
-TFigured it out. The max cores is the number of hyperthreaded cores (eight in my case).
The maximum number of guest vCPUs is unlimited - you can assign, say, 100 cores - each vCPU core is just a thread on host, it does not correspond to any physical characteristics of your host.
/mjt