KVM Threads consume whole phys. CPU

H

holgihero

Member
Jan 13, 2010
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Since a week or so i notice that single kvm threads consume a lot of cpu usage - up to one physical cpu load - constantly. The guest inside the kvm is idle. After reboot of the vm sometimes everything seems to be ok. But after a while another vm shows the same behaviour. Linux and Windows guest do similar.

one example from top:

530502 root 20 0 1156m 1.0g 1600 S 47 13.2 44:12.85 kvm
475693 root 20 0 1674m 1.5g 1580 R 47 19.7 257:04.96 kvm

Both machines are running idle with nothing to do.

Host is Proxmox 1.9 latest patch level

Any idea?

Regards Holger
 
Hi Beta,

KSM might be a trace, once I disabled it due to extended cpu load. After updating Proxmox it seems to be back.
So once again I put it back in its box so lets see what happens now.

Thanks for the hint, Holger
 
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