mirror of
https://gitlab.com/libvirt/libvirt-python.git
synced 2025-07-05 08:59:36 +03:00
89 lines
2.8 KiB
Python
Executable File
89 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# Print some host NUMA node statistics
|
|
#
|
|
# Authors:
|
|
# Michal Privoznik <mprivozn@redhat.com>
|
|
|
|
import libvirt
|
|
import sys
|
|
from xml.dom import minidom
|
|
import libxml2
|
|
from typing import Any, Dict # noqa F401
|
|
|
|
def xpath_eval(ctxt, path: str) -> str:
|
|
res = ctxt.xpathEval(path)
|
|
if res is None or len(res) == 0:
|
|
value = ''
|
|
else:
|
|
value = res[0].content
|
|
return value
|
|
|
|
try:
|
|
conn = libvirt.openReadOnly(None)
|
|
except libvirt.libvirtError:
|
|
print("Failed to connect to the hypervisor")
|
|
sys.exit(1)
|
|
|
|
try:
|
|
capsXML = conn.getCapabilities()
|
|
except libvirt.libvirtError:
|
|
print("Failed to request capabilities")
|
|
sys.exit(1)
|
|
|
|
caps = minidom.parseString(capsXML)
|
|
cells = caps.getElementsByTagName("cells")[0]
|
|
|
|
nodesIDs = [ int(proc.getAttribute("id"))
|
|
for proc in cells.getElementsByTagName("cell") ]
|
|
|
|
nodesMem = [ conn.getMemoryStats(int(proc))
|
|
for proc in nodesIDs]
|
|
|
|
doms = conn.listAllDomains(libvirt.VIR_CONNECT_LIST_DOMAINS_ACTIVE)
|
|
|
|
domsStrict = [ proc
|
|
for proc in doms
|
|
if proc.numaParameters()["numa_mode"] == libvirt.VIR_DOMAIN_NUMATUNE_MEM_STRICT ]
|
|
|
|
domsStrictCfg = {} # type: Dict[libvirt.virDomain, Dict[str, Dict[str, Any]]]
|
|
for dom in domsStrict:
|
|
xmlStr = dom.XMLDesc()
|
|
doc = libxml2.parseDoc(xmlStr)
|
|
ctxt = doc.xpathNewContext()
|
|
|
|
domsStrictCfg[dom] = {}
|
|
|
|
pin = ctxt.xpathEval("string(/domain/numatune/memory/@nodeset)")
|
|
memsize = ctxt.xpathEval("string(/domain/memory)")
|
|
domsStrictCfg[dom]["memory"] = {"size": int(memsize), "pin": pin}
|
|
|
|
for memnode in ctxt.xpathEval("/domain/numatune/memnode"):
|
|
ctxt.setContextNode(memnode)
|
|
cellid = xpath_eval(ctxt, "@cellid")
|
|
nodeset = xpath_eval(ctxt, "@nodeset")
|
|
|
|
nodesize = xpath_eval(ctxt, "/domain/cpu/numa/cell[@id='%s']/@memory" % cellid)
|
|
domsStrictCfg[dom][cellid] = {"size": int(nodesize), "pin": nodeset}
|
|
|
|
|
|
print("NUMA stats")
|
|
print("NUMA nodes:\t" + "\t".join(str(node) for node in nodesIDs))
|
|
print("MemTotal:\t" + "\t".join(str(i.get("total") // 1024) for i in nodesMem)) # type: ignore
|
|
print("MemFree:\t" + "\t".join(str(i.get("free") // 1024) for i in nodesMem)) # type: ignore
|
|
|
|
for dom, v in domsStrictCfg.items():
|
|
print("Domain '%s':\t" % dom.name())
|
|
|
|
toPrint = "\tOverall memory: %d MiB" % (v["memory"]["size"] // 1024)
|
|
if v["memory"]["pin"] is not None and v["memory"]["pin"] != "":
|
|
toPrint = toPrint + " nodes %s" % v["memory"]["pin"]
|
|
print(toPrint)
|
|
|
|
for k, node in sorted(v.items()):
|
|
if k == "memory":
|
|
continue
|
|
toPrint = "\tNode %s:\t%d MiB" % (k, node["size"] // 1024)
|
|
if node["pin"] is not None and node["pin"] == "":
|
|
toPrint = toPrint + " nodes %s" % node["pin"]
|
|
print(toPrint)
|