Re: [CentOS-virt] Increase CPU usage on HV after upgrade (7.2 -> 7.3)

On Wed, Jan 18, 2017 at 2:34 PM, Subscriber ml-lists@agoris.net.ua wrote:

Hello ,

After upgrading the system from CentOS 7.2.1511 to CenOS 7.3.1611 I see that the average processing time has increased from 5-7% to 12-15% (doubled). Not critical but it is not pleasant. Server as KVM with 5 virtual machines. Someone noticed something similar? If so, how to fix that?

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.

Thx.

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