with_new_caps_pythonic.py

#!/usr/bin/python
# Amador Pahim <apahim@redhat.com>
# Jan 12 2013

import libvirt
from xml.dom import minidom

#c = libvirt.open("qemu:///system")
#caps = minidom.parseString(c.getCapabilities())
caps = minidom.parse("capabilities.xml")

host = caps.getElementsByTagName('host')[0]
cells = host.getElementsByTagName('cells')[0]
total_cpus = cells.getElementsByTagName('cpu').length

socketIds = []
siblingsIds = []

socketIds = [ proc.getAttribute('socket_id')
              for proc in cells.getElementsByTagName('cpu')
              if proc.getAttribute('socket_id') not in socketIds ]

siblingsIds = [ proc.getAttribute('siblings')
                for proc in cells.getElementsByTagName('cpu')
                if proc.getAttribute('siblings') not in siblingsIds ]

print "Sockets:",len(set(socketIds))
print "Cores:",len(set(siblingsIds))
print "Threads:",total_cpus