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numa_memory_spread: Make sure enough memory for guest #5005

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Jul 5, 2023
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numa_memory_spread: Make sure enough memory for guest #5005

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10 changes: 6 additions & 4 deletions libvirt/tests/src/numa/numa_memory_spread.py
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Original file line number Diff line number Diff line change
Expand Up @@ -79,12 +79,12 @@ def prepare_host_for_test(params, test):
format(numa_memory['nodeset'], nodeset_size))
logging.debug('Memory available on a neighbour node {} is {}'.
format(neighbour, nodeset_nb_size))
# Increase a size by 50% of neighbour node
oversize = int(nodeset_size + 0.5 * nodeset_nb_size)
# Increase a size by 25% of neighbour node
oversize = int(nodeset_size + 0.25 * nodeset_nb_size)
# Decrease nodeset size by 25%
undersize = int(nodeset_size * 0.25)
# Memory to eat is a whole nodeset + 10% of neighbour size
memory_to_eat = int(nodeset_size + 0.1 * nodeset_nb_size)
# Memory to eat is a whole nodeset + 5% of neighbour size
memory_to_eat = int(nodeset_size + 0.05 * nodeset_nb_size)
nodeset_string = '{},{}'.format(online_nodes[0], neighbour)
process.run("swapoff -a", shell=True)

Expand Down Expand Up @@ -246,6 +246,8 @@ def run(test, params, env):
nodeset_string = constants[5]
# Prepare VM XML
prepare_vm_xml_for_test(vm_name, numa_memory, oversize, undersize)
# Drop caches first to make sure host has enough memory
utils_memory.drop_caches()
# Start the VM
virsh.start(vm_name, ignore_status=False, debug=True)
session = vm.wait_for_login()
Expand Down