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Diffstat (limited to 'resources/libraries/python/PerfUtil.py')
-rw-r--r-- | resources/libraries/python/PerfUtil.py | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/resources/libraries/python/PerfUtil.py b/resources/libraries/python/PerfUtil.py new file mode 100644 index 0000000000..51832dee48 --- /dev/null +++ b/resources/libraries/python/PerfUtil.py @@ -0,0 +1,60 @@ +# Copyright (c) 2020 Cisco and/or its affiliates. +# 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. + +"""Linux perf utility.""" + +from resources.libraries.python.Constants import Constants +from resources.libraries.python.ssh import exec_cmd +from resources.libraries.python.topology import NodeType + +__all__ = [u"PerfUtil"] + + +class PerfUtil: + """Class contains methods for perf utility.""" + + @staticmethod + def perf_stat(node, cpu_list=None, duration=1): + """Get perf stat read for duration. + + :param node: Node in the topology. + :param cpu_list: CPU List. + :param duration: Measure time in seconds. + :type node: dict + :type cpu_list: str + :type duration: int + """ + cpu = cpu_list if cpu_list else u"0-$(($(nproc) - 1))" + command = ( + u"perf stat" + f" --cpu {cpu} --no-aggr" + f" --event '{{{Constants.PERF_STAT_EVENTS}}}'" + f" --interval-print 1000 " + f" -- sleep {int(duration)}" + ) + exec_cmd(node, command, sudo=True) + + @staticmethod + def perf_stat_on_all_duts(nodes, cpu_list=None, duration=1): + """Get perf stat read for duration on all DUTs. + + :param nodes: Nodes in the topology. + :param cpu_list: CPU List. + :param duration: Measure time in seconds. + :type nodes: dict + :type cpu_list: str + :type duration: int + """ + for node in nodes.values(): + if node[u"type"] == NodeType.DUT: + PerfUtil.perf_stat(node, cpu_list=cpu_list, duration=duration) |