Hello Sandro, Friday, January 20, 2017, 6:54:02 PM, you wrote: > On Thu, Jan 19, 2017 at 3:40 PM, Subscriber <ml-lists at agoris.net.ua> wrote: > Hello Sandro, > Thursday, January 19, 2017, 12:12:25 PM, you wrote: >> Discussed with KVM guys, here's the answer: >> 1% per VM seems to much on idle VM; if the VM is not idle you are >> getting better performance in exchange. For idle VMs the difference >> should be roughly 0.1% per VM. > I compared the graphics load on the CPU before and after the upgrade. > After the upgrade is clearly increased CPU System time load. In all > of this mode and load VM themselves became approximately the same. > Can you share exact version of kvm, libvirt and qemu-kvm / qemu-kvm-ev you're using? kvm_intel In CentOS 7.2.1511: kernel-3.10.0-327.36.3.el7.x86_64 qemu-kvm-1.5.3-105.el7_2.7.x86_64 libvirt-daemon-kvm-1.2.17-13.el7_2.5.x86_64 After upgrade from 7.2.1511 to 7.3.1611: It was (after upgrading to this version, I noticed described in the first report the situation): kernel-3.10.0-514.2.2.el7.x86_64 qemu-kvm-1.5.3-126.el7.x86_64 libvirt-daemon-kvm-2.0.0-10.el7_3.2.x86_64 Now (as of 2017/01/22): kernel-3.10.0-514.6.1.el7.x86_64 qemu-kvm-1.5.3-126.el7_3.3.x86_64 libvirt-daemon-kvm-2.0.0-10.el7_3.4.x86_64 It takes 1-2 days for monitoring, to determine whether the situation has changed since the last update.