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[fedora-virt] Virtualization: qemu-kvm: Excessive CPU usage on host



Hello to everyone, on my laptop with F12x86_64 I have 'yum -y install 
virtualization', then I installed a virtual machine F12x86_64 
(without X, it's a server) for testing.

Unfortunately, when the guest machine is on and idle (does 
anything) the host machine always has the cpu committed by the 15/25% 
qemu-kvm. 

>  PID USER  PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> 3584 qemu  20   0  764m 179m 3116 S 19.3  5.9  10:06.45 qemu-kvm

Also, after a bit of time (more than an hour) and the guest machine is
unused, the process ksmd use excessive CPU (about 30%): another process 
that slowed down with no apparent reason host (my laptop): 

>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>    32 root      25   5     0    0    0 R 30.1  0.0  39:00.62 ksmd
>  3584 qemu      20   0  764m 523m 3116 S 15.9 17.3  31:59.25 qemu-kvm

All these things with VMware-server did not happen.

Is this normal? 
It's possible do something to improve the situation? 

Otherwise, I will have to go back to VMware. 

Thanks in advance.

-- 
Dario Lesca <d lesca solinos it>


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