qemu-kvm process over 100 %

[sbdcunha]

Dear All,

I have done a new installation of Centos 8.3 X64 Bit and then I installed Libvirtd for KVM Virtualization.
Now when I installed a new guest VM I see that the qemu-kvm process goes to 100 %
I have attached a screen shot of Top
Now If I shut the VM the CPU utilzation is 1 to 2 %
attached is the screen shot when VM guest is running

appreciate your advice and help

regards

simon

qumu-kvm.JPG (151.21 KiB) Viewed 4929 times

[TrevorH]

Do you have hardware virtualization turned on in your BIOS settings?

[jlehtone]

I have done a new installation of Centos 8.3 ...

CentOS Linux is currently based on RHEL 8.5. Why have you used an old image, or more importantly:
have you ran dnf upgrade to get all the latest content?


PS. At this point any CentOS Linux 8 install is moot, since it has EOL this month.
CentOS Stream 8, RHEL 8 (or anything derived from it, for example AlmaLinux, Rocky Linux, Oracle Linux) would elongate the install's lifetime.

[sbdcunha]

Dear All,

Thanks guys for the quick response
Sorry for my earlier mail as it was not descriptive
the setup as below

Rocky linux 8.5 x 64 Bit
Linux kvmdnshost.domain.com 4.18.0-348.2.1.el8_5.x86_64 #1 SMP Mon Nov 15 20:49:28 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
I have done a dnf update
Hardware Virtualization turned on in Bios and cannot be changed attached screen shot. Server setup screen shot
If Guest VM is not running all is good but moment I start the VM the host quemu-kvm process show 100% Cpu when top command is run and there are ping timeouts to this hosts
Before I had centos 7x on this same machine and this issue was not there
Appreciate your help .

bios.JPG (72.24 KiB) Viewed 4884 times

Thanks and regards

simon

[jlehtone]

Rocky linux 8.5 x 64 Bit

You could ask from Rocky community too. https://rockylinux.org/ shows that they have forum, mattermost, irc, mailing lists, ...
They have their incentive to make users happy and are as likely to have encountered similar issues on CentOS as people on this forum.

[TrevorH]

I'd turn off VT-d and leave "Intel (R) VT" enabled. VT-d is used for attaching entire devices to virtual machines.