# Copyright 2013-2015 ARM Limited
#
# 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.
#
# pylint: disable=E1101,W0201,E0203
import os
from wa import Workload, Parameter, Executable, WorkloadError, ConfigError
from wa.utils.exec_control import once
from wa.utils.misc import parse_value
from wa.utils.types import numeric, cpu_mask
class Sysbench(Workload):
name = 'sysbench'
description = """
A modular, cross-platform and multi-threaded benchmark tool for evaluating
OS parameters that are important for a system running a database under
intensive load.
The idea of this benchmark suite is to quickly get an impression about
system performance without setting up complex database benchmarks or
even without installing a database at all.
**Features of SysBench**
* file I/O performance
* scheduler performance
* memory allocation and transfer speed
* POSIX threads implementation performance
* database server performance
See: https://github.com/akopytov/sysbench
"""
parameters = [
Parameter('timeout', kind=int, default=300,
description='''
timeout for workload execution (adjust from default if
running on a slow target and/or specifying a large value for
``max_requests``
'''),
Parameter('test', kind=str, default='cpu',
allowed_values=['fileio', 'cpu', 'memory', 'threads', 'mutex'],
description='sysbench test to run'),
Parameter('threads', kind=int, default=8, aliases=['num_threads'],
description='''
The number of threads sysbench will launch.
'''),
Parameter('max_requests', kind=int, default=None,
description='The limit for the total number of requests.'),
Parameter('max_time', kind=int, default=None,
description='''
The limit for the total execution time. If neither this nor
``max_requests`` is specified, this will default to 30
seconds.
'''),
Parameter('file_test_mode', default=None,
allowed_values=['seqwr', 'seqrewr', 'seqrd', 'rndrd', 'rndwr', 'rndrw'],
description='''
File test mode to use. This should only be specified if
``test`` is ``"fileio"``; if that is the case and
``file_test_mode`` is not specified, it will default to
``"seqwr"`` (please see sysbench documentation for
explanation of various modes).
'''),
Parameter('cmd_params', kind=str, default='',
description='''
Additional parameters to be passed to sysbench as a single
string.
'''),
Parameter('cpus', kind=cpu_mask, default=0, aliases=['taskset_mask'],
description='''
The processes spawned by sysbench will be
pinned to cores as specified by this parameter. Can be
provided as a mask, a list of cpus or a sysfs-style string.
'''),
]
def validate(self):
if (self.max_requests is None) and (self.max_time is None):
self.max_time = 30
if self.max_time and (self.max_time + 10) > self.timeout:
self.timeout = self.max_time + 10
if self.test == 'fileio' and not self.file_test_mode:
self.logger.debug('Test is "fileio" and no file_test_mode specified -- using default.')
self.file_test_mode = 'seqwr'
elif self.test != 'fileio' and self.file_test_mode:
raise ConfigError('file_test_mode must not be specified unless test is "fileio"')
@once
def initialize(self, context):
exe = Executable(self, self.target.abi, 'sysbench')
host_binary = context.get_resource(exe)
Sysbench.target_binary = self.target.install(host_binary)
def setup(self, context):
self.host_results_file = None
params = dict(test=self.test,
num_threads=self.threads)
if self.max_requests:
params['max_requests'] = self.max_requests
if self.max_time:
params['max_time'] = self.max_time
self.target_results_file = self.target.get_workpath('sysbench_result.txt')
self.command = self._build_command(**params)
def run(self, context):
self.target.execute(self.command, timeout=self.timeout)
def extract_results(self, context):
self.host_results_file = os.path.join(context.output_directory, 'sysbench_result.txt')
self.target.pull(self.target_results_file, self.host_results_file)
context.add_artifact('sysbench_output', self.host_results_file, kind='raw')
def update_output(self, context):
if not os.path.exists(self.host_results_file):
self.logger.warning('No results file found.')
return
with open(self.host_results_file) as fh:
find_line_with('General statistics:', fh)
extract_metric('total time', next(fh), context.output)
extract_metric('total number of events', next(fh), context.output, lower_is_better=False)
find_line_with('response time:', fh)
extract_metric('min', next(fh), context.output, 'response time ')
extract_metric('avg', next(fh), context.output, 'response time ')
extract_metric('max', next(fh), context.output, 'response time ')
extract_metric('approx. 95 percentile', next(fh), context.output)
find_line_with('Threads fairness:', fh)
extract_threads_fairness_metric('events', next(fh), context.output)
extract_threads_fairness_metric('execution time', next(fh), context.output)
def teardown(self, context):
self.target.remove(self.target_results_file)
@once
def finalize(self, context):
self.target.uninstall('sysbench')
def _build_command(self, **parameters):
param_strings = ['--{}={}'.format(k.replace('_', '-'), v)
for k, v in parameters.items()]
if self.file_test_mode:
param_strings.append('--file-test-mode={}'.format(self.file_test_mode))
sysbench_command = '{} {} {} run'.format(self.target_binary, ' '.join(param_strings), self.cmd_params)
if self.cpus:
taskset_string = '{} taskset {} '.format(self.target.busybox, self.cpus.mask())
else:
taskset_string = ''
return 'cd {} && {} {} > sysbench_result.txt'.format(self.target.working_directory, taskset_string, sysbench_command)
# Utility functions
def find_line_with(text, fh):
for line in fh:
if text in line:
return
message = 'Could not extract sysbench results from {}; did not see "{}"'
raise WorkloadError(message.format(fh.name, text))
def extract_metric(metric, line, output, prefix='', lower_is_better=True):
try:
name, value_part = [part.strip() for part in line.split(':')]
if name != metric:
message = 'Name mismatch: expected "{}", got "{}"'
raise WorkloadError(message.format(metric, name.strip()))
if not value_part or not value_part[0].isdigit():
raise ValueError('value part does not start with a digit: {}'.format(value_part))
idx = -1
if not value_part[idx].isdigit(): # units detected at the end of the line
while not value_part[idx - 1].isdigit():
idx -= 1
value = numeric(value_part[:idx])
units = value_part[idx:]
else:
value = numeric(value_part)
units = None
output.add_metric(prefix + metric,
value, units, lower_is_better=lower_is_better)
except Exception as e:
message = 'Could not extract sysbench metric "{}"; got "{}"'
raise WorkloadError(message.format(prefix + metric, e))
def extract_threads_fairness_metric(metric, line, output):
try:
name_part, value_part = [part.strip() for part in line.split(':')]
name = name_part.split('(')[0].strip()
if name != metric:
message = 'Name mismatch: expected "{}", got "{}"'
raise WorkloadError(message.format(metric, name))
avg, stddev = [numeric(v) for v in value_part.split('/')]
output.add_metric('thread fairness {} avg'.format(metric), avg)
output.add_metric('thread fairness {} stddev'.format(metric),
stddev, lower_is_better=True)
except Exception as e:
message = 'Could not extract sysbench metric "{}"; got "{}"'
raise WorkloadError(message.format(metric, e))