diff options
Diffstat (limited to 'yardstick/network_services/traffic_profile/rfc2544.py')
| -rw-r--r-- | yardstick/network_services/traffic_profile/rfc2544.py | 164 |
1 files changed, 114 insertions, 50 deletions
diff --git a/yardstick/network_services/traffic_profile/rfc2544.py b/yardstick/network_services/traffic_profile/rfc2544.py index c24e2f65a..aaa491b75 100644 --- a/yardstick/network_services/traffic_profile/rfc2544.py +++ b/yardstick/network_services/traffic_profile/rfc2544.py @@ -19,10 +19,11 @@ from trex_stl_lib import trex_stl_client from trex_stl_lib import trex_stl_packet_builder_scapy from trex_stl_lib import trex_stl_streams +from yardstick.common import constants from yardstick.network_services.traffic_profile import trex_traffic_profile -LOGGING = logging.getLogger(__name__) +LOG = logging.getLogger(__name__) SRC_PORT = 'sport' DST_PORT = 'dport' @@ -52,7 +53,7 @@ class PortPgIDMap(object): self._port_pg_id_map[port] = [] def get_pg_ids(self, port): - return self._port_pg_id_map.get(port) + return self._port_pg_id_map.get(port, []) def increase_pg_id(self, port=None): port = self._last_port if not port else port @@ -70,15 +71,17 @@ class PortPgIDMap(object): class RFC2544Profile(trex_traffic_profile.TrexProfile): """TRex RFC2544 traffic profile""" - TOLERANCE_LIMIT = 0.05 + TOLERANCE_LIMIT = 0.01 + STATUS_SUCCESS = "Success" + STATUS_FAIL = "Failure" def __init__(self, traffic_generator): super(RFC2544Profile, self).__init__(traffic_generator) self.generator = None + self.iteration = 0 self.rate = self.config.frame_rate self.max_rate = self.config.frame_rate self.min_rate = 0 - self.drop_percent_max = 0 def register_generator(self, generator): self.generator = generator @@ -118,15 +121,17 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): ports.append(port_num) port_pg_id.add_port(port_num) profile = self._create_profile(profile_data, - self.rate, port_pg_id) + self.rate, port_pg_id, + self.config.enable_latency) self.generator.client.add_streams(profile, ports=[port_num]) self.generator.client.start(ports=ports, duration=self.config.duration, force=True) + self.iteration = self.generator.rfc2544_helper.iteration.value return ports, port_pg_id - def _create_profile(self, profile_data, rate, port_pg_id): + def _create_profile(self, profile_data, rate, port_pg_id, enable_latency): """Create a STL profile (list of streams) for a port""" streams = [] for packet_name in profile_data: @@ -134,11 +139,13 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): get('outer_l2', {}).get('framesize')) imix_data = self._create_imix_data(imix) self._create_vm(profile_data[packet_name]) - _streams = self._create_streams(imix_data, rate, port_pg_id) + _streams = self._create_streams(imix_data, rate, port_pg_id, + enable_latency) streams.extend(_streams) return trex_stl_streams.STLProfile(streams) - def _create_imix_data(self, imix): + def _create_imix_data(self, imix, + weight_mode=constants.DISTRIBUTION_IN_BYTES): """Generate the IMIX distribution for a STL profile The input information is the framesize dictionary in a test case @@ -157,6 +164,20 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): E.g.: imix_count = {64: 25, 128: 75} + The weight mode is described in [1]. There are two ways to describe the + weight of the packets: + - Distribution in packets: the weight defines the percentage of + packets sent per packet size. IXIA uses this definition. + - Distribution in bytes: the weight defines the percentage of bytes + sent per packet size. + + Packet size # packets D. in packets Bytes D. in bytes + 40 7 58.33% 280 7% + 576 4 33.33% 2304 56% + 1500 1 8.33% 1500 37% + + [1] https://en.wikipedia.org/wiki/Internet_Mix + :param imix: (dict) IMIX size and weight """ imix_count = {} @@ -171,7 +192,15 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): imix_sum = 100 weight_normalize = float(imix_sum) / 100 - return {size: float(weight) / weight_normalize + imix_dip = {size: float(weight) / weight_normalize + for size, weight in imix_count.items()} + + if weight_mode == constants.DISTRIBUTION_IN_PACKETS: + return imix_dip + + byte_total = sum([int(size) * weight + for size, weight in imix_count.items()]) + return {size: float(int(size) * weight * 100) / byte_total for size, weight in imix_count.items()} def _create_vm(self, packet_definition): @@ -213,7 +242,7 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): return trex_stl_packet_builder_scapy.STLPktBuilder( pkt=base_pkt / pad, vm=self.trex_vm) - def _create_streams(self, imix_data, rate, port_pg_id): + def _create_streams(self, imix_data, rate, port_pg_id, enable_latency): """Create a list of streams per packet size The STL TX mode speed of the generated streams will depend on the frame @@ -237,28 +266,34 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): in imix_data.items() if float(weight) > 0): packet = self._create_single_packet(size) pg_id = port_pg_id.increase_pg_id() - stl_flow = trex_stl_streams.STLFlowLatencyStats(pg_id=pg_id) + stl_flow = (trex_stl_streams.STLFlowLatencyStats(pg_id=pg_id) if + enable_latency else None) mode = trex_stl_streams.STLTXCont(percentage=weight * rate / 100) streams.append(trex_stl_client.STLStream( packet=packet, flow_stats=stl_flow, mode=mode)) return streams def get_drop_percentage(self, samples, tol_low, tol_high, - correlated_traffic): + correlated_traffic, resolution): # pylint: disable=unused-argument """Calculate the drop percentage and run the traffic""" - tx_rate_fps = 0 - rx_rate_fps = 0 - for sample in samples: - tx_rate_fps += sum( - port['tx_throughput_fps'] for port in sample.values()) - rx_rate_fps += sum( - port['rx_throughput_fps'] for port in sample.values()) - tx_rate_fps = round(float(tx_rate_fps) / len(samples), 2) - rx_rate_fps = round(float(rx_rate_fps) / len(samples), 2) - - # TODO(esm): RFC2544 doesn't tolerate packet loss, why do we? - out_packets = sum(port['out_packets'] for port in samples[-1].values()) - in_packets = sum(port['in_packets'] for port in samples[-1].values()) + completed = False + status = self.STATUS_FAIL + out_pkt_end = sum(port['out_packets'] for port in samples[-1].values()) + in_pkt_end = sum(port['in_packets'] for port in samples[-1].values()) + out_pkt_ini = sum(port['out_packets'] for port in samples[0].values()) + in_pkt_ini = sum(port['in_packets'] for port in samples[0].values()) + in_bytes_ini = sum(port['in_bytes'] for port in samples[0].values()) + out_bytes_ini = sum(port['out_bytes'] for port in samples[0].values()) + in_bytes_end = sum(port['in_bytes'] for port in samples[-1].values()) + out_bytes_end = sum(port['out_bytes'] for port in samples[-1].values()) + time_diff = (list(samples[-1].values())[0]['timestamp'] - + list(samples[0].values())[0]['timestamp']).total_seconds() + out_packets = out_pkt_end - out_pkt_ini + in_packets = in_pkt_end - in_pkt_ini + out_bytes = out_bytes_end - out_bytes_ini + in_bytes = in_bytes_end - in_bytes_ini + tx_rate_fps = float(out_packets) / time_diff + rx_rate_fps = float(in_packets) / time_diff drop_percent = 100.0 # https://tools.ietf.org/html/rfc2544#section-26.3 @@ -266,33 +301,62 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): drop_percent = round( (float(abs(out_packets - in_packets)) / out_packets) * 100, 5) - tol_high = tol_high if tol_high > self.TOLERANCE_LIMIT else tol_high - tol_low = tol_low if tol_low > self.TOLERANCE_LIMIT else tol_low + tol_high = max(tol_high, self.TOLERANCE_LIMIT) + tol_low = min(tol_low, self.TOLERANCE_LIMIT) if drop_percent > tol_high: self.max_rate = self.rate elif drop_percent < tol_low: self.min_rate = self.rate - # else: - # NOTE(ralonsoh): the test should finish here - # pass - last_rate = self.rate - self.rate = round(float(self.max_rate + self.min_rate) / 2.0, 5) - - throughput = rx_rate_fps * 2 if correlated_traffic else rx_rate_fps - - if drop_percent > self.drop_percent_max: - self.drop_percent_max = drop_percent - - latency = {port_num: value['latency'] - for port_num, value in samples[-1].items()} + else: + status = self.STATUS_SUCCESS + completed = True - output = { - 'TxThroughput': tx_rate_fps, - 'RxThroughput': rx_rate_fps, - 'CurrentDropPercentage': drop_percent, - 'Throughput': throughput, - 'DropPercentage': self.drop_percent_max, - 'Rate': last_rate, - 'Latency': latency - } - return output + last_rate = self.rate + self.rate = self._get_next_rate() + if abs(last_rate - self.rate) < resolution: + # stop test if the difference between the rate transmission + # in two iterations is smaller than the value of the resolution + completed = True + LOG.debug("rate=%s, next_rate=%s, resolution=%s, completed=%s", + last_rate, self.rate, resolution, completed) + + ports = samples[-1].keys() + num_ports = len(ports) + + output = {} + for port in ports: + output[port] = {} + first = samples[0][port] + last = samples[-1][port] + output[port]['InPackets'] = last['in_packets'] - first['in_packets'] + output[port]['OutPackets'] = last['out_packets'] - first['out_packets'] + output[port]['InBytes'] = last['in_bytes'] - first['in_bytes'] + output[port]['OutBytes'] = last['out_bytes'] - first['out_bytes'] + if self.config.enable_latency: + output[port]['LatencyAvg'] = float(sum( + [last['latency'][id]['average'] for id in + last['latency']]) * 1000) / len(last['latency']) + output[port]['LatencyMin'] = min( + [last['latency'][id]['total_min'] for id in + last['latency']]) * 1000 + output[port]['LatencyMax'] = max( + [last['latency'][id]['total_max'] for id in + last['latency']]) * 1000 + + output['TxThroughput'] = tx_rate_fps + output['RxThroughput'] = rx_rate_fps + output['RxThroughputBps'] = round(float(in_bytes) / time_diff, 3) + output['TxThroughputBps'] = round(float(out_bytes) / time_diff, 3) + output['DropPercentage'] = drop_percent + output['Rate'] = last_rate + output['PktSize'] = self._get_framesize() + output['Iteration'] = self.iteration + output['Status'] = status + + if self.config.enable_latency: + output['LatencyAvg'] = float( + sum([output[port]['LatencyAvg'] for port in ports])) / num_ports + output['LatencyMin'] = min([output[port]['LatencyMin'] for port in ports]) + output['LatencyMax'] = max([output[port]['LatencyMax'] for port in ports]) + + return completed, output |