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99f8efbaf5
stress-ng will stress test a computer system in various selectable ways. It was designed to exercise various physical subsystems of a computer as well as the various operating system kernel interfaces.
134 lines
5.6 KiB
Python
134 lines
5.6 KiB
Python
# Copyright 2015, 2018 ARM Limited
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# pylint: disable=attribute-defined-outside-init
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import os
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import yaml
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from wa import Workload, Parameter, ConfigError, Executable
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from wa.utils.exec_control import once
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class StressNg(Workload):
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name = 'stress-ng'
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description = """
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Run the stress-ng benchmark.
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stress-ng will stress test a computer system in various selectable ways. It
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was designed to exercise various physical subsystems of a computer as well
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as the various operating system kernel interfaces.
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stress-ng can also measure test throughput rates; this can be useful to
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observe performance changes across different operating system releases or
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types of hardware. However, it has never been intended to be used as a
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precise benchmark test suite, so do NOT use it in this manner.
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The official website for stress-ng is at:
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http://kernel.ubuntu.com/~cking/stress-ng/
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Source code are available from:
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http://kernel.ubuntu.com/git/cking/stress-ng.git/
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"""
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parameters = [
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Parameter('stressor', kind=str, default='cpu',
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allowed_values=['cpu', 'io', 'fork', 'switch', 'vm', 'pipe',
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'yield', 'hdd', 'cache', 'sock', 'fallocate',
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'flock', 'affinity', 'timer', 'dentry',
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'urandom', 'sem', 'open', 'sigq', 'poll'],
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description='''
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Stress test case name. The cases listed in
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allowed values come from the stable release
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version 0.01.32. The binary included here
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compiled from dev version 0.06.01. Refer to
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man page for the definition of each stressor.
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'''),
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Parameter('extra_args', kind=str, default="",
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description='''
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Extra arguments to pass to the workload.
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Please note that these are not checked for validity.
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'''),
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Parameter('threads', kind=int, default=0,
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description='''
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The number of workers to run. Specifying a negative
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or zero value will select the number of online
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processors.
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'''),
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Parameter('duration', kind=int, default=60,
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description='''
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Timeout for test execution in seconds
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''')
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]
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@once
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def initialize(self, context):
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if not self.target.is_rooted:
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raise WorkloadError('stress-ng requires root premissions to run')
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resource = Executable(self, self.target.abi, 'stress-ng')
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host_exe = context.resolver.get(resource)
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StressNg.binary = self.target.install(host_exe)
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def setup(self, context):
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self.log = self.target.path.join(self.target.working_directory,
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'stress_ng_output.txt')
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self.results = self.target.path.join(self.target.working_directory,
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'stress_ng_results.yaml')
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self.command = ('{} --{} {} {} --timeout {}s --log-file {} --yaml {} '
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'--metrics-brief --verbose'
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.format(self.binary, self.stressor, self.threads,
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self.extra_args, self.duration, self.log,
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self.results))
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self.timeout = self.duration + 10
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def run(self, context):
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self.output = self.target.execute(self.command, timeout=self.timeout,
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as_root=True)
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def extract_results(self, context):
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self.host_file_log = os.path.join(context.output_directory,
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'stress_ng_output.txt')
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self.host_file_results = os.path.join(context.output_directory,
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'stress_ng_results.yaml')
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self.target.pull(self.log, self.host_file_log)
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self.target.pull(self.results, self.host_file_results)
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context.add_artifact('stress_ng_log', self.host_file_log, 'log', "stress-ng's logfile")
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context.add_artifact('stress_ng_results', self.host_file_results, 'raw', "stress-ng's results")
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def update_output(self, context):
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with open(self.host_file_results, 'r') as stress_ng_results:
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results = yaml.load(stress_ng_results)
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try:
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metric = results['metrics'][0]['stressor']
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throughput = results['metrics'][0]['bogo-ops']
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context.add_metric(metric, throughput, 'ops')
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# For some stressors like vm, if test duration is too short, stress_ng
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# may not able to produce test throughput rate.
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except TypeError:
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msg = '{} test throughput rate not found. Please increase test duration and retry.'
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self.logger.warning(msg.format(self.stressor))
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def validate(self):
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if self.stressor == 'vm' and self.duration < 60:
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raise ConfigError('vm test duration needs to be >= 60s.')
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@once
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def finalize(self, context):
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self.target.uninstall('stress-ng')
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