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# -*- coding: utf-8 -*-
#
# Copyright 2015 Red Hat, Inc.
# 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.
"""
Benchmark utility functions.
"""
import subprocess
def get_value(hw_lst, level1, level2, level3):
"""Get an specific value from the hardware inventory."""
for entry in hw_lst:
if level1 == entry[0] and level2 == entry[1] and level3 == entry[2]:
return entry[3]
return None
def get_one_cpu_per_socket(hw_lst):
"""Return a list of physical CPU ids."""
logical = get_value(hw_lst, 'cpu', 'logical', 'number')
current_phys_package_id = -1
cpu_list = []
for processor_num in range(int(logical)):
cmdline = ("cat /sys/devices/system/cpu/cpu%d/topology"
"/physical_package_id" % int(processor_num))
phys_cmd = subprocess.Popen(cmdline,
shell=True, stdout=subprocess.PIPE)
for phys_str in phys_cmd.stdout:
phys_id = int(phys_str.strip())
if phys_id > current_phys_package_id:
current_phys_package_id = phys_id
cpu_list.append(current_phys_package_id)
return cpu_list
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