Hello Sandro,
Friday, January 20, 2017, 6:54:02 PM, you wrote:
On Thu, Jan 19, 2017 at 3:40 PM, Subscriber ml-lists@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.