On 12.04.2012 09:21, RaSca wrote:
> Hi everybody,
> I'm using the PHP API to make a web interface interact with the virtual
> machines installed on some hypervisor.
> Everything is fine, but I would like to find a way to get the guest's
> cpu and mem usage, so that it should be possible to make some rrd
> graphs. I didn't find out anything and also it seems looking around that
> there is no way to obtain those data.
>
> What is strange for me is that programs like virt-top are showing
> exactly what I'm looking for. Can anyone help me to find out a way to
> retrieve those statistics?
>
> Another related question: do you think I can obtain the same data by
> using this:
>
> ps aux | egrep "[/]usr/libexec/qemu-kvm.*libvirt.*" | awk '{print $3"/"$4}'
>
This takes into account memory used by hypervisor itself.
Either you need to extend libvirt-php; or you can do:
$stats = exec("virsh dommemstat $dom");
However, I lean towards libvirt-php extension.
Michal
