On 01/17/2012 08:36 PM, mao weijie wrote:

I use like this;

int n = virDomainMemoryStats(dom, stats, 4, 0);

I want to get men used and not used. If can , I want to get all output in stats.

but "n" result is always 0.

That is the correct usage, and the fact that the answer is 0 is a byproduct of qemu not being able to provide the information. There are patches under way so that qemu 1.1 will be able to provide statistics; but until then, there's nothing libvirt can do if qemu doesn't provide the information. -- Eric Blake eblake@redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org