-# Copyright (c) 2018 Cisco and/or its affiliates.
+# Copyright (c) 2019 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:
"""
return self._latency
- 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,
- test_type,
- tg_if1_dst_mac=None, tg_if2_dst_mac=None):
+ 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, test_type, tg_if1_dst_mac=None,
+ tg_if2_dst_mac=None):
"""TG initialization.
+ TODO: Document why do we need (and how do we use) _ifaces_reordered.
+
:param tg_node: Traffic generator node.
:param tg_if1: TG - name of first interface.
:param tg_if2: TG - name of second interface.
if int(ret) != 0:
raise RuntimeError('TRex stateless runtime error')
- def trex_stl_start_remote_exec(self, duration, rate, framesize,
- traffic_type, async_call=False,
- latency=True, warmup_time=5.0):
+ def trex_stl_start_remote_exec(
+ self, duration, rate, framesize, traffic_type, async_call=False,
+ latency=True, warmup_time=5.0, unidirection=False, tx_port=0,
+ rx_port=1):
"""Execute script on remote node over ssh to start traffic.
:param duration: Time expresed in seconds for how long to send traffic.
:param async_call: If enabled then don't wait for all incomming trafic.
:param latency: With latency measurement.
:param warmup_time: Warmup time period.
+ :param unidirection: Traffic is unidirectional. Default: False
+ :param tx_port: Traffic generator transmit port for first flow.
+ Default: 0
+ :param rx_port: Traffic generator receive port for first flow.
+ Default: 1
:type duration: float
:type rate: str
:type framesize: str
:type async_call: bool
:type latency: bool
:type warmup_time: float
- :returns: Nothing
+ :type unidirection: bool
+ :type tx_port: int
+ :type rx_port: int
:raises RuntimeError: In case of TG driver issue.
"""
ssh = SSH()
ssh.connect(self._node)
+ 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)
+ command = (
+ "sh -c '{tool}/resources/tools/trex/trex_stateless_profile.py"
+ " --profile {prof}/resources/traffic_profiles/trex/{traffic}.py"
+ " --duration {duration} --frame_size {framesize} --rate {rate}"
+ " --warmup_time {warmup} --port_0 {p_0} --port_1 {p_1}").format(
+ tool=Constants.REMOTE_FW_DIR, prof=Constants.REMOTE_FW_DIR,
+ traffic=traffic_type, duration=duration, framesize=framesize,
+ rate=rate, warmup=warmup_time, p_0=p_0, p_1=p_1)
+ if async_call:
+ command += " --async"
+ if latency:
+ command += " --latency"
+ if unidirection:
+ command += " --unidirection"
+ command += "'"
- _async = "--async" if async_call else ""
- _latency = "--latency" if latency else ""
- _p0, _p1 = (2, 1) if self._ifaces_reordered else (1, 2)
-
- profile_path = ("{0}/resources/traffic_profiles/trex/"
- "{1}.py".format(Constants.REMOTE_FW_DIR,
- traffic_type))
(ret, stdout, _) = ssh.exec_command(
- "sh -c "
- "'{0}/resources/tools/trex/trex_stateless_profile.py "
- "--profile {1} "
- "--duration {2} "
- "--frame_size {3} "
- "--rate {4} "
- "--warmup_time {5} "
- "--port_0 {6} "
- "--port_1 {7} "
- "{8} " # --async
- "{9}'". # --latency
- format(Constants.REMOTE_FW_DIR, profile_path, duration, framesize,
- rate, warmup_time, _p0 - 1, _p1 - 1, _async, _latency),
- timeout=float(duration) + 60)
+ command, timeout=float(duration) + 60)
if int(ret) != 0:
raise RuntimeError('TRex stateless runtime error')
else:
# 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])
- def trex_stl_start_unidirection(self, duration, rate, framesize,
- traffic_type, tx_port=0, rx_port=1,
- async_call=False, latency=False,
- warmup_time=5.0):
- """Execute script on remote node over ssh to start unidirection traffic.
- The purpose of this function is to support performance test that need to
- measure unidirectional traffic, e.g. Load balancer maglev mode and l3dsr
- mode test.
-
- :param duration: Time expresed in seconds for how long to send traffic.
- :param rate: Traffic rate expressed with units (pps, %)
- :param framesize: L2 frame size to send (without padding and IPG).
- :param traffic_type: Module name as a traffic type identifier.
- See resources/traffic_profiles/trex for implemented modules.
- :param tx_port: Traffic generator transmit port.
- :param rx_port: Traffic generator receive port.
- :param latency: With latency measurement.
- :param async_call: If enabled then don't wait for all incomming trafic.
- :param warmup_time: Warmup time period.
- :type duration: float
- :type rate: str
- :type framesize: str
- :type traffic_type: str
- :type tx_port: integer
- :type rx_port: integer
- :type latency: bool
- :type async_call: bool
- :type warmup_time: float
- :returns: Nothing
- :raises RuntimeError: In case of TG driver issue.
- """
- ssh = SSH()
- ssh.connect(self._node)
-
- _latency = "--latency" if latency else ""
- _async = "--async" if async_call else ""
-
- profile_path = ("{0}/resources/traffic_profiles/trex/"
- "{1}.py".format(Constants.REMOTE_FW_DIR,
- traffic_type))
- (ret, stdout, _) = ssh.exec_command(
- "sh -c "
- "'{0}/resources/tools/trex/trex_stateless_profile.py "
- "--profile {1} "
- "--duration {2} "
- "--frame_size {3} "
- "--rate {4} "
- "--warmup_time {5} "
- "--port_0 {6} "
- "--port_1 {7} "
- "{8} " # --async
- "{9} " # --latency
- "{10}'". # --unidirection
- format(Constants.REMOTE_FW_DIR, profile_path, duration, framesize,
- rate, warmup_time, tx_port, rx_port, _async, _latency,
- "--unidirection"),
- timeout=float(duration) + 60)
-
- if int(ret) != 0:
- raise RuntimeError('TRex unidirection runtime error')
- elif async_call:
- #no result
- self._received = None
- self._sent = None
- self._loss = None
- self._latency = None
- else:
- # 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])
-
def stop_traffic_on_tg(self):
"""Stop all traffic on TG.
if self._node['subtype'] == NodeSubTypeTG.TREX:
self.trex_stl_stop_remote_exec(self._node)
- def send_traffic_on_tg(self, duration, rate, framesize, traffic_type,
- unidirection=False, tx_port=0, rx_port=1,
- warmup_time=5, async_call=False, latency=True):
+ def send_traffic_on_tg(
+ self, duration, rate, framesize, traffic_type, warmup_time=5,
+ async_call=False, latency=True, unidirection=False, tx_port=0,
+ rx_port=1):
"""Send traffic from all configured interfaces on TG.
+ Note that bidirectional traffic also contains flows
+ transmitted from rx_port and received in tx_port.
+ But some tests use asymmetric traffic, so those arguments are relevant.
+
+ Also note that traffic generator uses DPDK driver which might
+ reorder port numbers based on wiring and PCI numbering.
+ This method handles that, so argument values are invariant,
+ but you can see swapped valued in debug logs.
+
+ TODO: Is it better to have less descriptive argument names
+ just to make them less probable to be viewed as misleading or confusing?
+ See https://gerrit.fd.io/r/#/c/17625/11/resources/libraries/python/TrafficGenerator.py@406
+
:param duration: Duration of test traffic generation in seconds.
:param rate: Offered load per interface (e.g. 1%, 3gbps, 4mpps, ...).
:param framesize: Frame size (L2) in Bytes.
:param traffic_type: Module name as a traffic type identifier.
See resources/traffic_profiles/trex for implemented modules.
- :param unidirection: Traffic is unidirectional.
- :param tx_port: Traffic generator transmit port.
- :param rx_port: Traffic generator receive port.
:param warmup_time: Warmup phase in seconds.
:param async_call: Async mode.
:param latency: With latency measurement.
+ :param unidirection: Traffic is unidirectional. Default: False
+ :param tx_port: Traffic generator transmit port for first flow.
+ Default: 0
+ :param rx_port: Traffic generator receive port for first flow.
+ Default: 1
:type duration: str
:type rate: str
:type framesize: str
:type traffic_type: str
- :type unidirection: bool
- :type tx_port: integer
- :type rx_port: integer
:type warmup_time: float
:type async_call: bool
:type latency: bool
+ :type unidirection: bool
+ :type tx_port: int
+ :type rx_port: int
:returns: TG output.
:rtype: str
:raises RuntimeError: If TG is not set, or if node is not TG,
if node['subtype'] is None:
raise RuntimeError('TG subtype not defined')
elif node['subtype'] == NodeSubTypeTG.TREX:
- if unidirection:
- self.trex_stl_start_unidirection(duration, rate, framesize,
- traffic_type, tx_port,
- rx_port, async_call, latency,
- warmup_time)
- else:
- self.trex_stl_start_remote_exec(duration, rate, framesize,
- traffic_type, async_call,
- latency, warmup_time)
+ self.trex_stl_start_remote_exec(
+ duration, rate, framesize, traffic_type, async_call, latency,
+ warmup_time, unidirection, tx_port, rx_port)
else:
raise NotImplementedError("TG subtype not supported")
unit_rate = str(transmit_rate / 2.0) + "pps"
self.send_traffic_on_tg(
duration, unit_rate, self.frame_size, self.traffic_type,
- self.warmup_time, latency=True)
+ warmup_time=self.warmup_time, latency=True)
transmit_count = int(self.get_sent())
loss_count = int(self.get_loss())
measurement = ReceiveRateMeasurement(
Code Review / csit.git / blobdiff