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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. Signed-off-by: Chase Qi <chase.qi@linaro.org>
108 lines
5.0 KiB
Python
108 lines
5.0 KiB
Python
# Copyright 2015 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 wlauto import Workload, Parameter, Executable
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from wlauto.exceptions import WorkloadError, ConfigError
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class StressNg(Workload):
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name = 'stress_ng'
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description = """
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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='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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Parameter('threads', kind=int, default=0,
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description='The number of workers to run. Specifying a '
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'negative or zero value will select the number '
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'of online processors.'),
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Parameter('duration', kind=int, default=60,
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description='Timeout for test execution in seconds')
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]
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def initialize(self, context):
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if not self.device.is_rooted:
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raise WorkloadError('stress-ng requires root premissions to run')
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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 need to be >= 60s.')
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def setup(self, context):
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host_binary = context.resolver.get(Executable(self, self.device.abi,
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'stress-ng'))
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self.binary = self.device.install_if_needed(host_binary)
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self.log = self.device.path.join(self.device.working_directory,
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'stress_ng_output.txt')
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self.results = self.device.path.join(self.device.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.duration, self.log, 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.device.execute(self.command, timeout=self.timeout,
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as_root=True)
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def update_result(self, context):
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host_file_log = os.path.join(context.output_directory,
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'stress_ng_output.txt')
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host_file_results = os.path.join(context.output_directory,
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'stress_ng_results.yaml')
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self.device.pull_file(self.log, host_file_log)
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self.device.pull_file(self.results, host_file_results)
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with open(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.result.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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self.logger.warning('{} test throughput rate not found. '
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'Please increase test duration and retry.'
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.format(self.stressor))
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