/
os_capability_linux.py
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/
os_capability_linux.py
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# Copyright 2017 IBM Corp
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from collections import defaultdict
import re
from oslo_log import log as logging
from zun.common import exception
from zun.common import utils
from zun.container.os_capability import host_capability
LOG = logging.getLogger(__name__)
class LinuxHost(host_capability.Host):
def get_cpu_numa_info(self):
# TODO(sbiswas7): rootwrap changes for zun required.
old_lscpu = False
try:
output = utils.execute('lscpu', '-p=socket,cpu,online')
except exception.CommandError:
LOG.info("There was a problem while executing lscpu -p=socket"
",cpu,online. Try again without the online column.")
# There is a possibility that an older version of lscpu is used
# So let's try without the online column
output = utils.execute('lscpu', '-p=socket,cpu')
old_lscpu = True
if old_lscpu:
cpu_sock_pair = re.findall("\d+(?:,\d+)?", str(output))
else:
cpu_sock_pair = re.findall("\d+(?:,\d+,[Y/N])?", str(output))
sock_map = defaultdict(list)
for value in cpu_sock_pair:
val = value.split(",")
if len(val) == 3 and val[2] == 'Y':
sock_map[val[0]].append(int(val[1]))
elif len(val) == 2 and old_lscpu:
sock_map[val[0]].append(int(val[1]))
return sock_map
def get_mem_numa_info(self):
try:
output = utils.execute('numactl', '-H')
except exception.CommandError:
LOG.info("There was a problem while executing numactl -H, "
"Try again without the online column.")
return []
sizes = re.findall("size\: \d*", str(output))
mem_numa = []
for size in sizes:
mem_numa.append(int(size.split(' ')[1]))
return mem_numa