Re: [libvirt-users] No way to obtain guest's cpu and mem usage?
On Thu, Apr 12, 2012 at 10:48:05AM +0200, RaSca wrote:
Il giorno Gio 12 Apr 2012 10:39:42 CEST, Daniel P. Berrange ha
scritto:
[...]
> Yes, I'd suggest adding it to libvirt-php.
> Daniel
But wait Daniel,
as far as I see, the only info I can obtain from virDomainGetInfo are:
unsigned char state : the running state, one of virDomainState
unsigned long maxMem : the maximum memory in KBytes allowed
unsigned long memory : the memory in KBytes used by the domain
unsigned short nrVirtCpu : the number of virtual CPUs for the domain
unsigned long long cpuTime : the CPU time used in nanoseconds
which are *exact* the same data I can reach from the php function
libvirt_domain_get_info. But these are NOT live stats, these does not
contain the actual cpu and memory usage.
Err, yes they are the live stats. 'memory' shows the current memory
consumed by the VM, while 'cpuTime' shows the absolute CPU time
consumed since boot. To get % CPU time, take two readings 'n' seconds
apart and calculate the delta between them
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|