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##############################################################################
# Copyright (c) 2015 Ericsson AB and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
from __future__ import absolute_import
from __future__ import print_function
import logging
import pkg_resources
from oslo_serialization import jsonutils
import yardstick.ssh as ssh
from yardstick.benchmark.scenarios import base
LOG = logging.getLogger(__name__)
class Perf(base.Scenario):
"""Execute perf benchmark in a host
Parameters
events - perf tool software, hardware or tracepoint events
type: [str]
unit: na
default: ['task-clock']
load - simulate load on the host by doing IO operations
type: bool
unit: na
default: false
For more info about perf and perf events see https://perf.wiki.kernel.org
"""
__scenario_type__ = "Perf"
TARGET_SCRIPT = 'perf_benchmark.bash'
def __init__(self, scenario_cfg, context_cfg):
self.scenario_cfg = scenario_cfg
self.context_cfg = context_cfg
self.setup_done = False
def setup(self):
"""scenario setup"""
self.target_script = pkg_resources.resource_filename(
'yardstick.benchmark.scenarios.compute', Perf.TARGET_SCRIPT)
host = self.context_cfg['host']
self.client = ssh.SSH.from_node(host, defaults={"user": "ubuntu"})
self.client.wait(timeout=600)
# copy script to host
self.client._put_file_shell(self.target_script, '~/perf_benchmark.sh')
self.setup_done = True
def run(self, result):
"""execute the benchmark"""
if not self.setup_done:
self.setup()
options = self.scenario_cfg['options']
events = options.get('events', ['task-clock'])
events_string = ""
for event in events:
events_string += event + " "
# if run by a duration runner
duration_time = self.scenario_cfg["runner"].get("duration", None) \
if "runner" in self.scenario_cfg else None
# if run by an arithmetic runner
arithmetic_time = options.get("duration", None)
if duration_time:
duration = duration_time
elif arithmetic_time:
duration = arithmetic_time
else:
duration = 30
if 'load' in options:
load = "dd if=/dev/urandom of=/dev/null"
else:
load = "sleep %d" % duration
cmd = "sudo bash perf_benchmark.sh '%s' %d %s" \
% (load, duration, events_string)
LOG.debug("Executing command: %s", cmd)
status, stdout, _ = self.client.execute(cmd)
if status:
raise RuntimeError(stdout)
result.update(jsonutils.loads(stdout))
if "sla" in self.scenario_cfg:
metric = self.scenario_cfg['sla']['metric']
exp_val = self.scenario_cfg['sla']['expected_value']
smaller_than_exp = 'smaller_than_expected' \
in self.scenario_cfg['sla']
self.verify_SLA(metric in result,
"Metric (%s) not found." % metric)
self.verify_SLA(
not smaller_than_exp,
"%s %d >= %d (sla); " % (metric, result[metric], exp_val))
self.verify_SLA(
result[metric] >= exp_val,
"%s %d < %d (sla); " % (metric, result[metric], exp_val))
def _test():
"""internal test function"""
key_filename = pkg_resources.resource_filename('yardstick.resources',
'files/yardstick_key')
ctx = {
'host': {
'ip': '10.229.47.137',
'user': 'root',
'key_filename': key_filename
}
}
logger = logging.getLogger('yardstick')
logger.setLevel(logging.DEBUG)
options = {'load': True}
args = {'options': options}
result = {}
p = Perf(args, ctx)
p.run(result)
print(result)
if __name__ == '__main__':
_test()
|
