It is hard to define that extra % are leak due to upgrade, maybe should try on little heavy load VM and see if it is still constant. Xlord From: CentOS-virt [mailto:centos-virt-bounces at centos.org] On Behalf Of Sandro Bonazzola Sent: Thursday, January 19, 2017 6:12 PM To: Subscriber <ml-lists at agoris.net.ua>; Discussion about the virtualization on CentOS <centos-virt at centos.org> Cc: centos at centos.org Subject: 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 at agoris.net.ua <mailto:ml-lists at 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. _______________________________________________ CentOS-virt mailing list CentOS-virt at centos.org <mailto:CentOS-virt at centos.org> https://lists.centos.org/mailman/listinfo/centos-virt -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com <http://redhat.com> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20170123/ede50975/attachment-0006.html>