[libvirt-users] win2k8 guest and (strange) number of cpus task manager sees

[lejeczek]

hi everybody

a qemu-kvm guest gets 16 cpus and Windows in "Device 
Manager" sees all sixteeen
but "Task Manager" shows only 4, the same "System" 
properties say "(4 processors)"

I'd like to learn a bit about this - is it some sort of 
"resources management" on the libvirt/qemu causing this? And 
what does it do to a guest performance-wise side?

it's on Scientific L 7,
qemu-kvm-1.5.3-60.el7_0.7.x86_64
libvirt-1.1.1-29.el7_0.1.x86_64

regards
P.