Re: Increase CPU usage on HV after upgrade (7.2 -> 7.3)

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On Wed, Jan 18, 2017 at 2:34 PM, Subscriber <ml-lists@xxxxxxxxxxxxx> 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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