0276f52886
Tests deploying an instance mapped to shared PCPUs and dedicated PCPUs on the host [1] New test method deploys an instance using a flavor with a mixed dedicated policy. Currently deploys with a mask that excludes core id 0 of the guest instance from mapping its cores to dedicated PCPUs from the host. [1] https://specs.openstack.org/openstack/nova-specs/specs/victoria/implemented/use-pcpu-vcpu-in-one-instance.html Change-Id: Id9a32f1439ee8b646f35988675f352e789deaf12
42 lines
1.5 KiB
Python
42 lines
1.5 KiB
Python
# Copyright 2021 Red Hat
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from whitebox_tempest_plugin import hardware
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class NUMAHelperMixin(object):
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"""Mixin class containing helpers to obtain NUMA-related information about
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a server from its XML.
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"""
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def get_pinning_as_set(self, server_id):
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pinset = set()
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root = self.get_server_xml(server_id)
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vcpupins = root.findall('./cputune/vcpupin')
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for pin in vcpupins:
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pinset |= hardware.parse_cpu_spec(pin.get('cpuset'))
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return pinset
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def get_host_pcpus_for_guest_vcpu(self, server_id, instance_cpu_id):
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"""Search the xml vcpu element of the provided instance for its cpuset.
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Convert cpuset found into a set of integers.
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"""
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xml_cpu_search = "./cputune/vcpupin[@vcpu='%s']" % instance_cpu_id
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root = self.get_server_xml(server_id)
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cpus = root.find(xml_cpu_search)
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cpuset = cpus.attrib.get('cpuset')
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return hardware.parse_cpu_spec(cpuset)
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