+++ /dev/null
-# 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.OptionString import OptionString
-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 as a string separated by comma.
- :param duration: Measure time in seconds.
- :type node: dict
- :type cpu_list: str
- :type duration: int
- """
- if cpu_list:
- cpu_list = list(dict.fromkeys(cpu_list.split(u",")))
- cpu_list = ",".join(str(cpu) for cpu in cpu_list)
-
- cmd_opts = OptionString(prefix=u"--")
- cmd_opts.add(u"no-aggr")
- cmd_opts.add_with_value_if(
- u"cpu", cpu_list, cpu_list
- )
- cmd_opts.add_if(
- u"all-cpus", not(cpu_list)
- )
- cmd_opts.add_with_value_if(
- u"event", f"'{{{Constants.PERF_STAT_EVENTS}}}'",
- Constants.PERF_STAT_EVENTS
- )
- cmd_opts.add_with_value(
- u"interval-print", 1000
- )
- cmd_opts.add_with_value(
- u"field-separator", u"';'"
- )
-
- cmd_base = OptionString()
- cmd_base.add(f"perf stat")
- cmd_base.extend(cmd_opts)
- cmd_base.add(u"--")
- cmd_base.add_with_value(u"sleep", int(duration))
-
- exec_cmd(node, cmd_base, 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)