Proxmox shows CPU usage, but VM has no activity

[ppo]

Guest KVM top shows:

Cpu(s):  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st

Proxmox permanently shows 20% Guest CPU load:

root@proxmox1:~# pveversion  -v
pve-manager: 2.3-13 (pve-manager/2.3/7946f1f1)
running kernel: 2.6.32-19-pve
proxmox-ve-2.6.32: 2.3-93
pve-kernel-2.6.32-16-pve: 2.6.32-82
pve-kernel-2.6.32-19-pve: 2.6.32-93
lvm2: 2.02.95-1pve2
clvm: 2.02.95-1pve2
corosync-pve: 1.4.4-4
openais-pve: 1.1.4-2
libqb: 0.10.1-2
redhat-cluster-pve: 3.1.93-2
resource-agents-pve: 3.9.2-3
fence-agents-pve: 3.1.9-1
pve-cluster: 1.0-36
qemu-server: 2.3-18
pve-firmware: 1.0-21
libpve-common-perl: 1.0-49
libpve-access-control: 1.0-26
libpve-storage-perl: 2.3-6
vncterm: 1.0-3
vzctl: 4.0-1pve2
vzprocps: 2.0.11-2
vzquota: 3.1-1
pve-qemu-kvm: 1.4-8
ksm-control-daemon: 1.1-1

 

[spirit]

it could be vm interrupts.

(proxmox monitor guest cpu from kvm host process).

What's is your guest os + vm config ?

 

[ppo]

Thanks for your reply, spirit.
VM config:

bootdisk: virtio0
cores: 1
ide2: local:iso/trixbox-2.8.0.4.iso,media=cdrom,size=656408K
memory: 672
name: trixbox
net0: virtio=7A:3A:93:5A:F3:27,bridge=vmbr1
onboot: 1
ostype: l26
sockets: 1
virtio0: local:100/vm-100-disk-1.qcow2,size=5G

Guest VM:

[trixbox1.localdomain ~]# uname -a
Linux trixbox1.localdomain 2.6.18-164.11.1.el5 #1 SMP Wed Jan 20 07:39:04 EST 2010 i686 i686 i386 GNU/Linux

 

[spirit]

It's possible that is the old 2.6.18 kernel, no using kvmclock timer.

also virtio driver are very old in 2.6.18.

if you can, try to update the kernel to 2.6.32 minimum, or better 3.X.

 

[wahmed]

it also could be pve stat daemon needs restart.
i believe the following command from the proxmox ssh console will fix the issue.
# service pvestatd restart