[one-users] A question about the utilization of VMs

[Ruben S. Montero]

Well that's normal if not usinng balloning. The hypervisor (outside
the VM) allocates the whole memory till the VM is destroyed

On Thu, Nov 24, 2011 at 10:19 AM, Adnan Pasic <pqado at yahoo.de> wrote:
> Okay, here is what I do:
> - first I turned off the KSM function on the host that is going to hold my
> VM
> - then: onevm create vm_2GB.qemu
> - then: ssh user at vm_2GB
> - then: lookbusy -m 2000M
>  --> Via "top" or "free" I can see that this VM is fully utilized now!
>  --> In the physical machine I get the same result - 2GB utilized, which is
> as expected!
> - then, after some time: killall lookbusy (from inside the VM)
>  --> "top" or "free" now say that the VM is empty in regard to memory
> utilization
> - However when I now execute the "free" command on my host, I get this:
>
>             total       used       free     shared    buffers     cached
> Mem:          3023       2933         89          0         21        675
> -/+ buffers/cache:       2236        786
> Swap:         6234          9       6225
>
> As you can see the utilized memory is not cached or whatsoever, but really
> utilized (as we can see in line 2: 2236 MB used!!!).
> Any ideas? :-(
>
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>



-- 
Dr. Ruben Santiago Montero
Associate Professor (Profesor Titular), Complutense University of Madrid

URL: http://dsa-research.org/doku.php?id=people:ruben
Weblog: http://blog.dsa-research.org/?author=7