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46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
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#!/usr/bin/env python
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# Parse topology information from the capabilities XML and use
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# them to calculate host topology
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#
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# Authors:
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# Amador Pahim <apahim@redhat.com>
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# Peter Krempa <pkrempa@redhat.com>
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import libvirt
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import sys
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from xml.dom import minidom
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try:
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conn = libvirt.openReadOnly(None)
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except libvirt.libvirtError:
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print 'Failed to connect to the hypervisor'
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sys.exit(1)
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try:
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capsXML = conn.getCapabilities()
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except libvirt.libvirtError:
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print 'Failed to request capabilities'
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sys.exit(1)
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caps = minidom.parseString(capsXML)
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host = caps.getElementsByTagName('host')[0]
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cells = host.getElementsByTagName('cells')[0]
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total_cpus = cells.getElementsByTagName('cpu').length
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socketIds = []
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siblingsIds = []
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socketIds = [ proc.getAttribute('socket_id')
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for proc in cells.getElementsByTagName('cpu')
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if proc.getAttribute('socket_id') not in socketIds ]
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siblingsIds = [ proc.getAttribute('siblings')
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for proc in cells.getElementsByTagName('cpu')
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if proc.getAttribute('siblings') not in siblingsIds ]
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print "Host topology"
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print "NUMA nodes:", cells.getAttribute('num')
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print " Sockets:", len(set(socketIds))
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print " Cores:", len(set(siblingsIds))
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print " Threads:", total_cpus
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