On 07/03/2014 01:12 AM, Restituto Marcus Arevalo wrote:

Greetings everyone,

[can you convince your mailer to wrap long lines?]

I just want to ask if it is possible to get the CPU usage of

the VMs in KVM through libvirt? I mean, how does the virt-manager produce the graph it displays? Is there a way get this graph? But instead of the graph itself, I just need to get it in percentage(%) form. I'd like to know how. Thank you and your help will be greatly appreciated.

The beauty of open source: pop open an editor on the virt-manager source code and learn for yourself how it is computing the graph. The trick is to call the query function at a regular interval (virDomainGetCPUStats in C code, or the appropriate language bindings in whatever you are doing), then manually subtract the difference in values between successive calls to compute a percentage yourself. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org