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5c6ff42254
Add a demo script originally written by Amador Pahim to parse topology of the host from data provided in the capabilities XML.
46 lines
1.3 KiB
Python
Executable File
46 lines
1.3 KiB
Python
Executable File
#!/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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