-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 Cisco and/or its affiliates.
# 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:
from robot.api import logger
from robot.libraries.BuiltIn import BuiltIn
-from .DropRateSearch import DropRateSearch
from .Constants import Constants
-from .ssh import exec_cmd_no_error, exec_cmd
-from .topology import NodeType
-from .topology import NodeSubTypeTG
-from .topology import Topology
+from .CpuUtils import CpuUtils
+from .DropRateSearch import DropRateSearch
from .MLRsearch.AbstractMeasurer import AbstractMeasurer
from .MLRsearch.MultipleLossRatioSearch import MultipleLossRatioSearch
from .MLRsearch.ReceiveRateMeasurement import ReceiveRateMeasurement
from .PLRsearch.PLRsearch import PLRsearch
+from .OptionString import OptionString
+from .ssh import exec_cmd_no_error, exec_cmd
+from .topology import NodeType
+from .topology import NodeSubTypeTG
+from .topology import Topology
-__all__ = ['TGDropRateSearchImpl', 'TrafficGenerator', 'OptimizedSearch']
+__all__ = [u"TGDropRateSearchImpl", u"TrafficGenerator", u"OptimizedSearch"]
def check_subtype(node):
:rtype: NodeSubTypeTG
:raises RuntimeError: If node is not supported, message explains how.
"""
- if node.get('type') is None:
- raise RuntimeError('Node type is not defined')
+ if node.get(u"type") is None:
+ msg = u"Node type is not defined"
elif node['type'] != NodeType.TG:
- raise RuntimeError('Node type is {typ!r}, not a TG'.format(
- typ=node['type']))
- elif node.get('subtype') is None:
- raise RuntimeError('TG subtype is not defined')
- elif node['subtype'] == NodeSubTypeTG.TREX:
+ msg = f"Node type is {node[u'type']!r}, not a TG"
+ elif node.get(u"subtype") is None:
+ msg = u"TG subtype is not defined"
+ elif node[u"subtype"] != NodeSubTypeTG.TREX:
+ msg = f"TG subtype {node[u'subtype']!r} is not supported"
+ else:
return NodeSubTypeTG.TREX
- raise RuntimeError('TG subtype {sub!r} is not supported'.format(
- sub=node['subtype']))
+ raise RuntimeError(msg)
class TGDropRateSearchImpl(DropRateSearch):
"""Drop Rate Search implementation."""
- def __init__(self):
- super(TGDropRateSearchImpl, self).__init__()
+ # def __init__(self):
+ # super(TGDropRateSearchImpl, self).__init__()
- def measure_loss(self, rate, frame_size, loss_acceptance,
- loss_acceptance_type, traffic_profile, skip_warmup=False):
+ def measure_loss(
+ self, rate, frame_size, loss_acceptance, loss_acceptance_type,
+ traffic_profile, skip_warmup=False):
"""Runs the traffic and evaluate the measured results.
:param rate: Offered traffic load.
:param loss_acceptance: Permitted drop ratio or frames count.
:param loss_acceptance_type: Type of permitted loss.
:param traffic_profile: Module name as a traffic profile identifier.
- See resources/traffic_profiles/trex for implemented modules.
+ See GPL/traffic_profiles/trex for implemented modules.
:param skip_warmup: Start TRex without warmup traffic if true.
:type rate: float
:type frame_size: str
# we need instance of TrafficGenerator instantiated by Robot Framework
# to be able to use trex_stl-*()
tg_instance = BuiltIn().get_library_instance(
- 'resources.libraries.python.TrafficGenerator')
+ u"resources.libraries.python.TrafficGenerator"
+ )
subtype = check_subtype(tg_instance.node)
if subtype == NodeSubTypeTG.TREX:
unit_rate = str(rate) + self.get_rate_type_str()
if skip_warmup:
tg_instance.trex_stl_start_remote_exec(
self.get_duration(), unit_rate, frame_size, traffic_profile,
- warmup_time=0.0)
+ warmup_time=0.0
+ )
else:
tg_instance.trex_stl_start_remote_exec(
- self.get_duration(), unit_rate, frame_size, traffic_profile)
+ self.get_duration(), unit_rate, frame_size, traffic_profile
+ )
loss = tg_instance.get_loss()
sent = tg_instance.get_sent()
if self.loss_acceptance_type_is_percentage():
loss = (float(loss) / float(sent)) * 100
- logger.trace("comparing: {los} < {acc} {typ}".format(
- los=loss, acc=loss_acceptance, typ=loss_acceptance_type))
+ logger.trace(
+ f"comparing: {loss} < {loss_acceptance} {loss_acceptance_type}"
+ )
return float(loss) <= float(loss_acceptance)
return False
:rtype: list
"""
tg_instance = BuiltIn().get_library_instance(
- 'resources.libraries.python.TrafficGenerator')
+ u"resources.libraries.python.TrafficGenerator"
+ )
return tg_instance.get_latency_int()
+# TODO: Pylint says too-many-instance-attributes.
+# A fix is developed in https://gerrit.fd.io/r/c/csit/+/22221
class TrafficGenerator(AbstractMeasurer):
"""Traffic Generator.
# TODO: Remove "trex" from lines which could work with other TGs.
# Use one instance of TrafficGenerator for all tests in test suite
- ROBOT_LIBRARY_SCOPE = 'TEST SUITE'
+ ROBOT_LIBRARY_SCOPE = u"TEST SUITE"
def __init__(self):
# TODO: Number of fields will be reduced with CSIT-1378.
self._sent = None
self._latency = None
self._received = None
+ self._approximated_rate = None
+ self._approximated_duration = None
# Measurement input fields, needed for async stop result.
self._start_time = None
self._rate = None
"""
return self._latency
+ def get_approximated_rate(self):
+ """Return approximated rate computed as ratio of transmited packets over
+ duration of trial.
+
+ :returns: Approximated rate.
+ :rtype: str
+ """
+ return self._approximated_rate
+
+ # TODO: pylint says disable=too-many-locals.
+ # A fix is developed in https://gerrit.fd.io/r/c/csit/+/22221
def initialize_traffic_generator(
self, tg_node, tg_if1, tg_if2, tg_if1_adj_node, tg_if1_adj_if,
tg_if2_adj_node, tg_if2_adj_if, osi_layer, tg_if1_dst_mac=None,
if1_addr = Topology().get_interface_mac(self._node, tg_if1)
if2_addr = Topology().get_interface_mac(self._node, tg_if2)
- if osi_layer == 'L2':
+ if osi_layer == u"L2":
if1_adj_addr = if2_addr
if2_adj_addr = if1_addr
- elif osi_layer == 'L3':
- if1_adj_addr = Topology().get_interface_mac(tg_if1_adj_node,
- tg_if1_adj_if)
- if2_adj_addr = Topology().get_interface_mac(tg_if2_adj_node,
- tg_if2_adj_if)
- elif osi_layer == 'L7':
+ elif osi_layer == u"L3":
+ if1_adj_addr = Topology().get_interface_mac(
+ tg_if1_adj_node, tg_if1_adj_if
+ )
+ if2_adj_addr = Topology().get_interface_mac(
+ tg_if2_adj_node, tg_if2_adj_if
+ )
+ elif osi_layer == u"L7":
if1_addr = Topology().get_interface_ip4(self._node, tg_if1)
if2_addr = Topology().get_interface_ip4(self._node, tg_if2)
- if1_adj_addr = Topology().get_interface_ip4(tg_if1_adj_node,
- tg_if1_adj_if)
- if2_adj_addr = Topology().get_interface_ip4(tg_if2_adj_node,
- tg_if2_adj_if)
+ if1_adj_addr = Topology().get_interface_ip4(
+ tg_if1_adj_node, tg_if1_adj_if
+ )
+ if2_adj_addr = Topology().get_interface_ip4(
+ tg_if2_adj_node, tg_if2_adj_if
+ )
else:
- raise ValueError("Unknown Test Type")
+ raise ValueError(u"Unknown Test Type")
# in case of switched environment we can override MAC addresses
if tg_if1_dst_mac is not None and tg_if2_dst_mac is not None:
if1_adj_addr, if2_adj_addr = if2_adj_addr, if1_adj_addr
self._ifaces_reordered = True
- if osi_layer == 'L2' or osi_layer == 'L3':
+ master_thread_id, latency_thread_id, socket, threads = \
+ CpuUtils.get_affinity_trex(
+ self._node, tg_if1, tg_if2,
+ tg_dtc=Constants.TREX_CORE_COUNT)
+
+ if osi_layer in (u"L2", u"L3"):
+ dst_mac0 = f"0x{if1_adj_addr.replace(u':', u',0x')}"
+ src_mac0 = f"0x{if1_addr.replace(u':', u',0x')}"
+ dst_mac1 = f"0x{if2_adj_addr.replace(u':', u',0x')}"
+ src_mac1 = f"0x{if2_addr.replace(u':', u',0x')}"
exec_cmd_no_error(
self._node,
- "sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
- "- version: 2\n"
- " interfaces: [\"{0}\",\"{1}\"]\n"
- " port_info:\n"
- " - dest_mac: [{2}]\n"
- " src_mac: [{3}]\n"
- " - dest_mac: [{4}]\n"
- " src_mac: [{5}]\n"
- "EOF'"\
- .format(if1_pci, if2_pci,
- "0x"+if1_adj_addr.replace(":", ",0x"),
- "0x"+if1_addr.replace(":", ",0x"),
- "0x"+if2_adj_addr.replace(":", ",0x"),
- "0x"+if2_addr.replace(":", ",0x")),
- sudo=True, message='TRex config generation error')
- elif osi_layer == 'L7':
+ f"sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
+ f"- version: 2\n"
+ f" c: {len(threads)}\n"
+ f" limit_memory: {Constants.TREX_LIMIT_MEMORY}\n"
+ f" interfaces: [\"{if1_pci}\",\"{if2_pci}\"]\n"
+ f" port_info:\n"
+ f" - dest_mac: [{dst_mac0}]\n"
+ f" src_mac: [{src_mac0}]\n"
+ f" - dest_mac: [{dst_mac1}]\n"
+ f" src_mac: [{src_mac1}]\n"
+ f" platform :\n"
+ f" master_thread_id: {master_thread_id}\n"
+ f" latency_thread_id: {latency_thread_id}\n"
+ f" dual_if:\n"
+ f" - socket: {socket}\n"
+ f" threads: {threads}\n"
+ f"EOF'",
+ sudo=True, message=u"TRex config generation!"
+ )
+ elif osi_layer == u"L7":
exec_cmd_no_error(
self._node,
- "sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
- "- version: 2\n"
- " interfaces: [\"{0}\",\"{1}\"]\n"
- " port_info:\n"
- " - ip: [{2}]\n"
- " default_gw: [{3}]\n"
- " - ip: [{4}]\n"
- " default_gw: [{5}]\n"
- "EOF'"\
- .format(if1_pci, if2_pci,
- if1_addr, if1_adj_addr,
- if2_addr, if2_adj_addr),
- sudo=True, message='TRex config generation error')
+ f"sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
+ f"- version: 2\n"
+ f" c: {len(threads)}\n"
+ f" limit_memory: {Constants.TREX_LIMIT_MEMORY}\n"
+ f" interfaces: [\"{if1_pci}\",\"{if2_pci}\"]\n"
+ f" port_info:\n"
+ f" - ip: [{if1_addr}]\n"
+ f" default_gw: [{if1_adj_addr}]\n"
+ f" - ip: [{if2_addr}]\n"
+ f" default_gw: [{if2_adj_addr}]\n"
+ f" platform :\n"
+ f" master_thread_id: {master_thread_id}\n"
+ f" latency_thread_id: {latency_thread_id}\n"
+ f" dual_if:\n"
+ f" - socket: {socket}\n"
+ f" threads: {threads}\n"
+ f"EOF'",
+ sudo=True, message=u"TRex config generation!"
+ )
else:
- raise ValueError("Unknown Test Type")
+ raise ValueError(u"Unknown Test Type!")
- self._startup_trex(osi_layer)
+ TrafficGenerator.startup_trex(
+ self._node, osi_layer, subtype=subtype
+ )
- def _startup_trex(self, osi_layer):
+ @staticmethod
+ def startup_trex(tg_node, osi_layer, subtype=None):
"""Startup sequence for the TRex traffic generator.
+ :param tg_node: Traffic generator node.
:param osi_layer: 'L2', 'L3' or 'L7' - OSI Layer testing type.
+ :param subtype: Traffic generator sub-type.
+ :type tg_node: dict
:type osi_layer: str
+ :type subtype: NodeSubTypeTG
:raises RuntimeError: If node subtype is not a TREX or startup failed.
"""
- # No need to check subtype, we know it is TREX.
- for _ in range(0, 3):
- # Kill TRex only if it is already running.
- cmd = "sh -c 'pgrep t-rex && pkill t-rex && sleep 3 || true'"
- exec_cmd_no_error(
- self._node, cmd, sudo=True, message='Kill TRex failed!')
-
- # Configure TRex.
- ports = ''
- for port in self._node['interfaces'].values():
- ports += ' {pci}'.format(pci=port.get('pci_address'))
-
- cmd = ("sh -c 'cd {dir}/scripts/ && "
- "./dpdk_nic_bind.py -u {ports} || true'"
- .format(dir=Constants.TREX_INSTALL_DIR, ports=ports))
- exec_cmd_no_error(
- self._node, cmd, sudo=True,
- message='Unbind PCI ports from driver failed!')
-
- cmd = ("sh -c 'cd {dir}/scripts/ && ./trex-cfg "
- "--unbind-unused-ports'"
- .format(dir=Constants.TREX_INSTALL_DIR))
- exec_cmd_no_error(
- self._node, cmd, sudo=True, message='Config TRex failed!')
-
- # Start TRex.
- cmd = ("sh -c 'cd {dir}/scripts/ && "
- "nohup ./t-rex-64 {mode} -i -c 7 > "
- "/tmp/trex.log 2>&1 &' > /dev/null"
- .format(dir=Constants.TREX_INSTALL_DIR,
- mode='--astf' if osi_layer == 'L7' else ''))
- try:
- exec_cmd_no_error(self._node, cmd, sudo=True)
- except RuntimeError:
- cmd = "sh -c 'cat /tmp/trex.log'"
+ if not subtype:
+ subtype = check_subtype(tg_node)
+ if subtype == NodeSubTypeTG.TREX:
+ for _ in range(0, 3):
+ # Kill TRex only if it is already running.
+ cmd = u"sh -c \"pgrep t-rex && pkill t-rex && sleep 3 || true\""
exec_cmd_no_error(
- self._node, cmd, sudo=True, message='Get TRex logs failed!')
- raise RuntimeError('Start TRex failed!')
+ tg_node, cmd, sudo=True, message=u"Kill TRex failed!"
+ )
- # Test if TRex starts successfuly.
- cmd = ("sh -c '{dir}/resources/tools/trex/trex_server_info.py'"
- .format(dir=Constants.REMOTE_FW_DIR))
- try:
+ # Configure TRex.
+ ports = ''
+ for port in tg_node[u"interfaces"].values():
+ ports += f" {port.get(u'pci_address')}"
+
+ cmd = f"sh -c \"cd {Constants.TREX_INSTALL_DIR}/scripts/ && " \
+ f"./dpdk_nic_bind.py -u {ports} || true\""
exec_cmd_no_error(
- self._node, cmd, sudo=True, message='Test TRex failed!',
- retries=20)
- except RuntimeError:
- continue
- return
- # After max retries TRex is still not responding to API critical error
- # occurred.
- raise RuntimeError('Start TRex failed after multiple retries!')
+ tg_node, cmd, sudo=True,
+ message=u"Unbind PCI ports from driver failed!"
+ )
+
+ # Start TRex.
+ cd_cmd = f"cd '{Constants.TREX_INSTALL_DIR}/scripts/'"
+ trex_cmd = OptionString([u"nohup", u"./t-rex-64"])
+ trex_cmd.add(u"-i")
+ trex_cmd.add(u"--prefix $(hostname)")
+ trex_cmd.add(u"--hdrh")
+ trex_cmd.add(u"--no-scapy-server")
+ trex_cmd.add_if(u"--astf", osi_layer == u"L7")
+ # OptionString does not create double space if extra is empty.
+ trex_cmd.add(f"{Constants.TREX_EXTRA_CMDLINE}")
+ inner_command = f"{cd_cmd} && {trex_cmd} > /tmp/trex.log 2>&1 &"
+ cmd = f"sh -c \"{inner_command}\" > /dev/null"
+ try:
+ exec_cmd_no_error(tg_node, cmd, sudo=True)
+ except RuntimeError:
+ cmd = u"sh -c \"cat /tmp/trex.log\""
+ exec_cmd_no_error(
+ tg_node, cmd, sudo=True,
+ message=u"Get TRex logs failed!"
+ )
+ raise RuntimeError(u"Start TRex failed!")
+
+ # Test if TRex starts successfuly.
+ command_line = OptionString().add(u"python3")
+ dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
+ command_line.add(f"'{dirname}/trex_server_info.py'")
+ try:
+ exec_cmd_no_error(
+ tg_node, command_line, sudo=True,
+ message=u"Test TRex failed!", retries=20
+ )
+ except RuntimeError:
+ continue
+ return
+ # After max retries TRex is still not responding to API critical
+ # error occurred.
+ exec_cmd(tg_node, u"cat /tmp/trex.log", sudo=True)
+ raise RuntimeError(u"Start TRex failed after multiple retries!")
@staticmethod
def is_trex_running(node):
:rtype: bool
:raises RuntimeError: If node type is not a TG.
"""
- # No need to check subtype, we know it is TREX.
-
- ret, _, _ = exec_cmd(node, "pidof t-rex", sudo=True)
+ ret, _, _ = exec_cmd(node, u"pgrep t-rex", sudo=True)
return bool(int(ret) == 0)
@staticmethod
subtype = check_subtype(node)
if subtype == NodeSubTypeTG.TREX:
exec_cmd_no_error(
- node, "sh -c 'sudo pkill t-rex && sleep 3'",
- sudo=False, message='pkill t-rex failed')
+ node,
+ u"sh -c "
+ u"\"if pgrep t-rex; then sudo pkill t-rex && sleep 3; fi\"",
+ sudo=False,
+ message=u"pkill t-rex failed"
+ )
def _parse_traffic_results(self, stdout):
"""Parse stdout of scripts into fields of self.
# last line from console output
line = stdout.splitlines()[-1]
self._result = line
- logger.info('TrafficGen result: {0}'.format(self._result))
- self._received = self._result.split(', ')[1].split('=')[1]
- self._sent = self._result.split(', ')[2].split('=')[1]
- self._loss = self._result.split(', ')[3].split('=')[1]
- self._latency = []
- self._latency.append(self._result.split(', ')[4].split('=')[1])
- self._latency.append(self._result.split(', ')[5].split('=')[1])
+ logger.info(f"TrafficGen result: {self._result}")
+ self._received = self._result.split(u", ")[1].split(u"=", 1)[1]
+ self._sent = self._result.split(u", ")[2].split(u"=", 1)[1]
+ self._loss = self._result.split(u", ")[3].split(u"=", 1)[1]
+ self._approximated_duration = \
+ self._result.split(u", ")[5].split(u"=", 1)[1]
+ self._approximated_rate = self._result.split(u", ")[6].split(u"=", 1)[1]
+ self._latency = list()
+ self._latency.append(self._result.split(u", ")[7].split(u"=", 1)[1])
+ self._latency.append(self._result.split(u", ")[8].split(u"=", 1)[1])
def trex_stl_stop_remote_exec(self, node):
"""Execute script on remote node over ssh to stop running traffic.
:raises RuntimeError: If stop traffic script fails.
"""
# No need to check subtype, we know it is TREX.
- x_args = ""
+ command_line = OptionString().add(u"python3")
+ dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
+ command_line.add(f"'{dirname}/trex_stateless_stop.py'")
+ command_line.change_prefix(u"--")
for index, value in enumerate(self._xstats):
if value is not None:
- # Nested quoting is fun.
- value = value.replace("'", "\"")
- x_args += " --xstat{i}='\"'\"'{v}'\"'\"'".format(
- i=index, v=value)
+ value = value.replace(u"'", u"\"")
+ command_line.add_equals(f"xstat{index}", f"'{value}'")
stdout, _ = exec_cmd_no_error(
- node, "sh -c '{d}/resources/tools/trex/trex_stateless_stop.py{a}'"\
- .format(d=Constants.REMOTE_FW_DIR, a=x_args),
- message='TRex stateless runtime error')
+ node, command_line, message=u"TRex stateless runtime error"
+ )
self._parse_traffic_results(stdout)
def trex_stl_start_remote_exec(
:param rate: Traffic rate expressed with units (pps, %)
:param frame_size: L2 frame size to send (without padding and IPG).
:param traffic_profile: Module name as a traffic profile identifier.
- See resources/traffic_profiles/trex for implemented modules.
+ See GPL/traffic_profiles/trex for implemented modules.
:param async_call: If enabled then don't wait for all incomming trafic.
:param latency: With latency measurement.
:param warmup_time: Warmup time period.
# No need to check subtype, we know it is TREX.
reorder = self._ifaces_reordered # Just to make the next line fit.
p_0, p_1 = (rx_port, tx_port) if reorder else (tx_port, rx_port)
- # Values from Robot can introduce type unicode,
- # we need to encode them, so that repr() does not lead with 'u'.
- if isinstance(rate, unicode):
- rate = rate.encode("utf-8")
if not isinstance(duration, (float, int)):
duration = float(duration)
if not isinstance(warmup_time, (float, int)):
warmup_time = float(warmup_time)
- command = (
- "sh -c '{tool}/resources/tools/trex/trex_stateless_profile.py"
- " --profile {prof}/resources/traffic_profiles/trex/{traffic}.py"
- " --duration {duration!r} --frame_size {frame_size} --rate {rate!r}"
- " --warmup_time {warmup!r} --port_0 {p_0} --port_1 {p_1}"
- " --traffic_directions {dirs}").format(
- tool=Constants.REMOTE_FW_DIR, prof=Constants.REMOTE_FW_DIR,
- traffic=traffic_profile, duration=duration,
- frame_size=frame_size, rate=rate, warmup=warmup_time, p_0=p_0,
- p_1=p_1, dirs=traffic_directions)
- if async_call:
- command += " --async_start"
- if latency:
- command += " --latency"
- command += "'"
+
+ command_line = OptionString().add(u"python3")
+ dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
+ command_line.add(f"'{dirname}/trex_stateless_profile.py'")
+ command_line.change_prefix(u"--")
+ dirname = f"{Constants.REMOTE_FW_DIR}/GPL/traffic_profiles/trex"
+ quoted_path = f"'{dirname}/{traffic_profile}.py'"
+ command_line.add_with_value(u"profile", quoted_path)
+ command_line.add_with_value(u"duration", f"{duration!r}")
+ command_line.add_with_value(u"frame_size", frame_size)
+ command_line.add_with_value(u"rate", f"{rate!r}")
+ command_line.add_with_value(u"warmup_time", f"{warmup_time!r}")
+ command_line.add_with_value(u"port_0", p_0)
+ command_line.add_with_value(u"port_1", p_1)
+ command_line.add_with_value(u"traffic_directions", traffic_directions)
+ command_line.add_if(u"async_start", async_call)
+ command_line.add_if(u"latency", latency)
+ command_line.add_if(u"force", Constants.TREX_SEND_FORCE)
stdout, _ = exec_cmd_no_error(
- self._node, command, timeout=float(duration) + 60,
- message='TRex stateless runtime error')
+ self._node, command_line, timeout=float(duration) + 60,
+ message=u"TRex stateless runtime error"
+ )
self.traffic_directions = traffic_directions
if async_call:
- #no result
+ # no result
self._start_time = time.time()
- self._rate = float(rate[:-3]) if "pps" in rate else float(rate)
+ self._rate = float(rate[:-3]) if u"pps" in rate else float(rate)
self._received = None
self._sent = None
self._loss = None
xstats = [None, None]
index = 0
for line in stdout.splitlines():
- if "Xstats snapshot {i}: ".format(i=index) in line:
+ if f"Xstats snapshot {index}: " in line:
xstats[index] = line[19:]
index += 1
if index == 2:
:param rate: Offered load per interface (e.g. 1%, 3gbps, 4mpps, ...).
:param frame_size: Frame size (L2) in Bytes.
:param traffic_profile: Module name as a traffic profile identifier.
- See resources/traffic_profiles/trex for implemented modules.
+ See GPL/traffic_profiles/trex for implemented modules.
:param warmup_time: Warmup phase in seconds.
:param async_call: Async mode.
:param latency: With latency measurement.
if subtype == NodeSubTypeTG.TREX:
self.trex_stl_start_remote_exec(
duration, rate, frame_size, traffic_profile, async_call,
- latency, warmup_time, traffic_directions, tx_port, rx_port)
+ latency, warmup_time, traffic_directions, tx_port, rx_port
+ )
return self._result
:raises Exception: If loss occured.
"""
if self._loss is None:
- raise RuntimeError('The traffic generation has not been issued')
- if self._loss != '0':
- raise RuntimeError('Traffic loss occurred: {0}'.format(self._loss))
+ raise RuntimeError(u"The traffic generation has not been issued")
+ if self._loss != u"0":
+ raise RuntimeError(f"Traffic loss occurred: {self._loss}")
def fail_if_no_traffic_forwarded(self):
"""Fail if no traffic forwarded.
:raises Exception: If no traffic forwarded.
"""
if self._received is None:
- raise RuntimeError('The traffic generation has not been issued')
- if self._received == '0':
- raise RuntimeError('No traffic forwarded')
+ raise RuntimeError(u"The traffic generation has not been issued")
+ if self._received == u"0":
+ raise RuntimeError(u"No traffic forwarded")
- def partial_traffic_loss_accepted(self, loss_acceptance,
- loss_acceptance_type):
+ def partial_traffic_loss_accepted(
+ self, loss_acceptance, loss_acceptance_type):
"""Fail if loss is higher then accepted in traffic run.
:param loss_acceptance: Permitted drop ratio or frames count.
:raises Exception: If loss is above acceptance criteria.
"""
if self._loss is None:
- raise Exception('The traffic generation has not been issued')
+ raise Exception(u"The traffic generation has not been issued")
- if loss_acceptance_type == 'percentage':
+ if loss_acceptance_type == u"percentage":
loss = (float(self._loss) / float(self._sent)) * 100
- elif loss_acceptance_type == 'frames':
+ elif loss_acceptance_type == u"frames":
loss = float(self._loss)
else:
- raise Exception('Loss acceptance type not supported')
+ raise Exception(u"Loss acceptance type not supported")
if loss > float(loss_acceptance):
- raise Exception("Traffic loss {} above loss acceptance: {}".format(
- loss, loss_acceptance))
+ raise Exception(
+ f"Traffic loss {loss} above loss acceptance: {loss_acceptance}"
+ )
- def set_rate_provider_defaults(self, frame_size, traffic_profile,
- warmup_time=0.0, traffic_directions=2):
+ def set_rate_provider_defaults(
+ self, frame_size, traffic_profile, warmup_time=0.0,
+ traffic_directions=2):
"""Store values accessed by measure().
:param frame_size: Frame size identifier or value [B].
:param traffic_profile: Module name as a traffic profile identifier.
- See resources/traffic_profiles/trex for implemented modules.
+ See GPL/traffic_profiles/trex for implemented modules.
:param warmup_time: Traffic duration before measurement starts [s].
:param traffic_directions: Traffic is bi- (2) or uni- (1) directional.
Default: 2
transmit_count = int(self.get_sent())
loss_count = int(self.get_loss())
measurement = ReceiveRateMeasurement(
- duration, transmit_rate, transmit_count, loss_count)
+ duration, transmit_rate, transmit_count, loss_count
+ )
measurement.latency = self.get_latency_int()
+ measurement.approximated_rate = self.get_approximated_rate()
return measurement
def measure(self, duration, transmit_rate):
transmit_rate = float(transmit_rate)
# TG needs target Tr per stream, but reports aggregate Tx and Dx.
unit_rate_int = transmit_rate / float(self.traffic_directions)
- unit_rate_str = str(unit_rate_int) + "pps"
+ unit_rate_str = str(unit_rate_int) + u"pps"
self.send_traffic_on_tg(
duration, unit_rate_str, self.frame_size, self.traffic_profile,
warmup_time=self.warmup_time, latency=True,
- traffic_directions=self.traffic_directions)
+ traffic_directions=self.traffic_directions
+ )
return self.get_measurement_result(duration, transmit_rate)
-class OptimizedSearch(object):
+class OptimizedSearch:
"""Class to be imported as Robot Library, containing search keywords.
Aside of setting up measurer and forwarding arguments,
:param frame_size: Frame size identifier or value [B].
:param traffic_profile: Module name as a traffic profile identifier.
- See resources/traffic_profiles/trex for implemented modules.
+ See GPL/traffic_profiles/trex for implemented modules.
:param minimum_transmit_rate: Minimal uni-directional
target transmit rate [pps].
:param maximum_transmit_rate: Maximal uni-directional
# we need instance of TrafficGenerator instantiated by Robot Framework
# to be able to use trex_stl-*()
tg_instance = BuiltIn().get_library_instance(
- 'resources.libraries.python.TrafficGenerator')
+ u"resources.libraries.python.TrafficGenerator"
+ )
tg_instance.set_rate_provider_defaults(
frame_size, traffic_profile, traffic_directions=traffic_directions)
algorithm = MultipleLossRatioSearch(
final_relative_width=final_relative_width,
number_of_intermediate_phases=number_of_intermediate_phases,
initial_trial_duration=initial_trial_duration, timeout=timeout,
- doublings=doublings)
+ doublings=doublings
+ )
result = algorithm.narrow_down_ndr_and_pdr(
- minimum_transmit_rate, maximum_transmit_rate, packet_loss_ratio)
+ minimum_transmit_rate, maximum_transmit_rate, packet_loss_ratio
+ )
return result
@staticmethod
:param frame_size: Frame size identifier or value [B].
:param traffic_profile: Module name as a traffic profile identifier.
- See resources/traffic_profiles/trex for implemented modules.
+ See GPL/traffic_profiles/trex for implemented modules.
:param minimum_transmit_rate: Minimal uni-directional
target transmit rate [pps].
:param maximum_transmit_rate: Maximal uni-directional
This is needed because initial "search" phase of integrator
takes significant time even without any trial results.
:param timeout: The search will stop after this overall time [s].
+ :param trace_enabled: True if trace enabled else False.
:param traffic_directions: Traffic is bi- (2) or uni- (1) directional.
Default: 2
:type frame_size: str or int
:type plr_target: float
:type initial_count: int
:type timeout: float
+ :type trace_enabled: bool
:type traffic_directions: int
:returns: Average and stdev of estimated aggregate rate giving PLR.
:rtype: 2-tuple of float
minimum_transmit_rate *= traffic_directions
maximum_transmit_rate *= traffic_directions
tg_instance = BuiltIn().get_library_instance(
- 'resources.libraries.python.TrafficGenerator')
+ u"resources.libraries.python.TrafficGenerator"
+ )
tg_instance.set_rate_provider_defaults(
frame_size, traffic_profile, traffic_directions=traffic_directions)
algorithm = PLRsearch(
measurer=tg_instance, trial_duration_per_trial=tdpt,
packet_loss_ratio_target=plr_target,
trial_number_offset=initial_count, timeout=timeout,
- trace_enabled=trace_enabled)
+ trace_enabled=trace_enabled
+ )
result = algorithm.search(minimum_transmit_rate, maximum_transmit_rate)
return result
Code Review / csit.git / blobdiff