3.4.12. getFreeMemory

⁠3.4.12. getFreeMemory

The getFreeMemory method can be used to find out the amount of free memory on the host node. Note: most libvirt APIs provide memory sizes in kilobytes, but in this function the returned value is in bytes. Divide by 1024 as necessary.

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Example 3.23. Using getFreeMemory

# Example-23.py
#!/usr/bin/env python3
import sys
import libvirt

conn = None
try:
    conn = libvirt.open("qemu:///system")
except libvirt.libvirtError as e:
    print(repr(e), file=sys.stderr)
    exit(1)

mem = conn.getFreeMemory()

print("Free memory on the node (host) is " + str(mem) + " bytes.")

conn.close()
exit(0)