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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
##############################################################################
# iperf3 scenario
# iperf3 homepage at: http://software.es.net/iperf/
import logging
import json
import pkg_resources
import yardstick.ssh as ssh
from yardstick.benchmark.scenarios import base
LOG = logging.getLogger(__name__)
LOG.setLevel(logging.DEBUG)
class Iperf(base.Scenario):
"""Executes an iperf3 benchmark between two hosts"""
__scenario_type__ = "Iperf3"
def __init__(self, context):
self.context = context
self.user = context.get('user', 'ubuntu')
self.host_ipaddr = context['host']
self.target_ipaddr = context['target_ipaddr']
self.key_filename = self.context.get('key_filename', '~/.ssh/id_rsa')
self.setup_done = False
def setup(self):
LOG.debug("setup, key %s", self.key_filename)
LOG.debug("host:%s, user:%s", self.host_ipaddr, self.user)
self.host = ssh.SSH(self.user, self.host_ipaddr,
key_filename=self.key_filename)
self.host.wait(timeout=600)
LOG.debug("target:%s, user:%s", self.target_ipaddr, self.user)
self.target = ssh.SSH(self.user, self.target_ipaddr,
key_filename=self.key_filename)
self.target.wait(timeout=600)
cmd = "iperf3 -s -D"
LOG.debug("Starting iperf3 server with command: %s", cmd)
status, _, stderr = self.target.execute(cmd)
if status:
raise RuntimeError(stderr)
def teardown(self):
LOG.debug("teardown")
self.host.close()
status, stdout, stderr = self.target.execute("pkill iperf3")
if status:
LOG.warn(stderr)
self.target.close()
def run(self, args):
"""execute the benchmark"""
# if run by a duration runner, get the duration time and setup as arg
time = self.context.get('duration', None)
options = args['options']
cmd = "iperf3 -c %s --json" % (self.target_ipaddr)
if "udp" in options:
cmd += " --udp"
else:
# tcp obviously
if "nodelay" in options:
cmd += " --nodelay"
# these options are mutually exclusive in iperf3
if time:
cmd += " %d" % time
elif "bytes" in options:
# number of bytes to transmit (instead of --time)
cmd += " --bytes %d" % options["bytes"]
elif "blockcount" in options:
cmd += " --blockcount %d" % options["blockcount"]
LOG.debug("Executing command: %s", cmd)
status, stdout, stderr = self.host.execute(cmd)
if status:
# error cause in json dict on stdout
raise RuntimeError(stdout)
output = json.loads(stdout)
# convert bits per second to bytes per second
bytes_per_second = \
int((output["end"]["sum_received"]["bits_per_second"])) / 8
if "sla" in args:
sla_bytes_per_second = int(args["sla"]["bytes_per_second"])
assert bytes_per_second >= sla_bytes_per_second, \
"bytes_per_second %d < sla (%d)" % \
(bytes_per_second, sla_bytes_per_second)
return output
def _test():
'''internal test function'''
logger = logging.getLogger('yardstick')
logger.setLevel(logging.DEBUG)
key_filename = pkg_resources.resource_filename('yardstick.resources',
'files/yardstick_key')
runner_cfg = {}
runner_cfg['type'] = 'Duration'
runner_cfg['duration'] = 5
runner_cfg['host'] = '10.0.2.33'
runner_cfg['target_ipaddr'] = '10.0.2.53'
runner_cfg['user'] = 'ubuntu'
runner_cfg['output_filename'] = "/tmp/yardstick.out"
runner_cfg['key_filename'] = key_filename
scenario_args = {}
scenario_args['options'] = {"bytes": 10000000000}
scenario_args['sla'] = \
{"bytes_per_second": 2900000000, "action": "monitor"}
from yardstick.benchmark.runners import base as base_runner
runner = base_runner.Runner.get(runner_cfg)
runner.run("Iperf3", scenario_args)
runner.join()
base_runner.Runner.release(runner)
if __name__ == '__main__':
_test()
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