},
},
},
+ {
+ "Name": "phy2phy_burst",
+ "Deployment": "p2p",
+ "Description": "Phy2Phy single burst of 1000 frames at 100% frame rate",
+ "Parameters" : {
+ "TRAFFIC" : {
+ "traffic_type" : "burst",
+ "frame_rate" : 100,
+ "burst_size" : 1000,
+ },
+ },
+ },
{
"Name": "pvp_cont",
"Deployment": "pvp",
# Detailed description of TRAFFIC dictionary items follows:
#
# 'traffic_type' - One of the supported traffic types.
-# E.g. rfc2544_throughput, rfc2544_back2back
-# or rfc2544_continuous
+# E.g. rfc2544_throughput, rfc2544_back2back,
+# rfc2544_continuous or burst
# Data type: str
# Default value: "rfc2544_throughput".
# 'bidir' - Specifies if generated traffic will be full-duplex (True)
# continuous stream tests.
# Data type: int
# Default value: 100.
+# 'burst_size' - Defines a number of frames in the single burst, which is sent
+# by burst traffic type. Burst size is applied for each direction,
+# i.e. the total number of tx frames will be 2*burst_size in case of
+# bidirectional traffic.
+# Data type: int
+# Default value: 100.
# 'multistream' - Defines number of flows simulated by traffic generator.
# Value 0 disables multistream feature
# Data type: int
TRAFFIC = {
'traffic_type' : 'rfc2544_throughput',
'frame_rate' : 100,
+ 'burst_size' : 100,
'bidir' : 'True', # will be passed as string in title format to tgen
'multistream' : 0,
'stream_type' : 'L4',
"vSwitch" : "OvsDpdkVhost", # works also for Vanilla OVS
"Parameters" : {
"TRAFFICGEN" : "Trex",
- "TRAFFICGEN_DURATION" : 5,
+ "TRAFFICGEN_TREX_LEARNING_MODE" : True,
"TRAFFIC" : {
- "traffic_type" : "rfc2544_continuous",
+ "traffic_type" : "burst",
"frame_rate" : 100,
+ "burst_size" : 5,
# enable capture of five RX frames
'capture': {
'enabled': True,
elif traffic['traffic_type'] == 'rfc2544_continuous':
result = self._traffic_gen_class.send_cont_traffic(
traffic, duration=self._duration)
+ elif traffic['traffic_type'] == 'burst':
+ result = self._traffic_gen_class.send_burst_traffic(
+ traffic, duration=self._duration)
elif traffic['traffic_type'] == 'rfc2544_throughput':
result = self._traffic_gen_class.send_rfc2544_throughput(
traffic, tests=self._tests, duration=self._duration, lossrate=self._lossrate)
which are discussed in detail at :ref:`integration-tests` userguide.
* param **traffic_type**: One of the supported traffic types,
- e.g. **rfc2544_throughput**, **rfc2544_continuous**
- or **rfc2544_back2back**.
- * param **frame_rate**: Defines desired percentage of frame
- rate used during continuous stream tests.
+ e.g. **rfc2544_throughput**, **rfc2544_continuous**,
+ **rfc2544_back2back** or **burst**.
* param **bidir**: Specifies if generated traffic will be full-duplex
(true) or half-duplex (false).
+ * param **frame_rate**: Defines desired percentage of frame
+ rate used during continuous stream tests.
+ * param **burst_size**: Defines a number of frames in the single burst,
+ which is sent by burst traffic type. Burst size is applied for each
+ direction, i.e. the total number of tx frames will be 2*burst_size
+ in case of bidirectional traffic.
* param **multistream**: Defines number of flows simulated by traffic
generator. Value 0 disables MultiStream feature.
* param **stream_type**: Stream Type defines ISO OSI network layer
.. code-block:: console
'traffic_type' - One of the supported traffic types.
- E.g. rfc2544_throughput, rfc2544_back2back
- or rfc2544_continuous
+ E.g. rfc2544_throughput, rfc2544_back2back,
+ rfc2544_continuous or burst
Data type: str
Default value: "rfc2544_throughput".
'bidir' - Specifies if generated traffic will be full-duplex (True)
continuous stream tests.
Data type: int
Default value: 100.
+ 'burst_size' - Defines a number of frames in the single burst, which is sent
+ by burst traffic type. Burst size is applied for each direction,
+ i.e. the total number of tx frames will be 2*burst_size in case of
+ bidirectional traffic.
+ Data type: int
+ Default value: 100.
'multistream' - Defines number of flows simulated by traffic generator.
Value 0 disables multistream feature
Data type: int
connect()
disconnect()
- send_burst_traffic(traffic, numpkts, time, framerate)
+ send_burst_traffic(traffic, time)
send_cont_traffic(traffic, time, framerate)
start_cont_traffic(traffic, time, framerate)
TRAFFIC = {
'traffic_type' : 'rfc2544_throughput',
'frame_rate' : 100,
+ 'burst_size' : 100,
'bidir' : 'True', # will be passed as string in title format to tgen
'multistream' : 0,
'stream_type' : 'L4',
TRAFFICGEN_TREX_LEARNING_MODE=True
TRAFFICGEN_TREX_LEARNING_DURATION=5
+Latency measurements have impact on T-Rex performance. Thus vswitchperf uses a separate
+latency stream for each direction with limited speed. This workaround is used for RFC2544
+**Throughput** and **Continuous** traffic types. In case of **Burst** traffic type,
+the latency statistics are measured for all frames in the burst. Collection of latency
+statistics is driven by configuration option ``TRAFFICGEN_TREX_LATENCY_PPS`` as follows:
+
+ * value ``0`` - disables latency measurements
+ * non zero integer value - enables latency measurements; In case of Throughput
+ and Continuous traffic types, it specifies a speed of latency specific stream
+ in PPS. In case of burst traffic type, it enables latency measurements for all frames.
+
+.. code-block:: console
+
+ TRAFFICGEN_TREX_LATENCY_PPS = 1000
+
SR-IOV and Multistream layer 2
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
T-Rex by default only accepts packets on the receive side if the destination mac matches the
import json
+from collections import OrderedDict
from conf import settings
from conf import merge_spec
from tools.pkt_gen import trafficgen
"""
pass
- def send_burst_traffic(self, traffic=None, numpkts=100, duration=20):
+ def send_burst_traffic(self, traffic=None, duration=20):
"""
Send a burst of traffic.
"""
traffic_ = self.traffic_defaults.copy()
- result = {}
+ result = OrderedDict()
if traffic:
traffic_ = merge_spec(traffic_, traffic)
results = get_user_traffic(
'burst',
- '%dpkts, %dmS' % (numpkts, duration),
+ '%dpkts, %dmS' % (traffic['burst_size'], duration),
traffic_,
('frames rx', 'payload errors', 'sequence errors'))
# builds results by using user-supplied values where possible
# and guessing remainder using available info
- result[ResultsConstants.TX_FRAMES] = numpkts
+ result[ResultsConstants.TX_FRAMES] = traffic['burst_size']
result[ResultsConstants.RX_FRAMES] = results[0]
result[ResultsConstants.TX_BYTES] = traffic_['l2']['framesize'] \
- * numpkts
+ * traffic['burst_size']
result[ResultsConstants.RX_BYTES] = traffic_['l2']['framesize'] \
* results[0]
result[ResultsConstants.PAYLOAD_ERR] = results[1]
result[ResultsConstants.SEQ_ERR] = results[2]
- return results
+ return result
def send_cont_traffic(self, traffic=None, duration=30):
"""
Send a continuous flow of traffic.
"""
traffic_ = self.traffic_defaults.copy()
- result = {}
+ result = OrderedDict()
if traffic:
traffic_ = merge_spec(traffic_, traffic)
Send traffic per RFC2544 throughput test specifications.
"""
traffic_ = self.traffic_defaults.copy()
- result = {}
+ result = OrderedDict()
if traffic:
traffic_ = merge_spec(traffic_, traffic)
Send traffic per RFC2544 back2back test specifications.
"""
traffic_ = self.traffic_defaults.copy()
- result = {}
+ result = OrderedDict()
if traffic:
traffic_ = merge_spec(traffic_, traffic)
return result
- def send_burst_traffic(self, traffic=None, numpkts=100, duration=20):
+ def send_burst_traffic(self, traffic=None, duration=20):
"""See ITrafficGenerator for description
"""
flow = {
- 'numpkts': numpkts,
+ 'numpkts': traffic['burst_size'],
'duration': duration,
'type': 'stopStream',
'framerate': traffic['frame_rate'],
return parse_ixnet_rfc_results(parse_result_string(output[0]))
- def send_burst_traffic(self, traffic=None, numpkts=100, duration=20):
+ def send_burst_traffic(self, traffic=None, duration=20):
return NotImplementedError('IxNet does not implement send_burst_traffic')
if __name__ == '__main__':
"""
self._logger.info("MOONGEN: In moongen disconnect method")
- def send_burst_traffic(self, traffic=None, numpkts=100, duration=20):
+ def send_burst_traffic(self, traffic=None, duration=20):
"""Send a burst of traffic.
- Send a ``numpkts`` packets of traffic, using ``traffic``
+ Send a ``traffic['burst_traffic']`` packets of traffic, using ``traffic``
configuration, with a timeout of ``time``.
:param traffic: Detailed "traffic" spec, i.e. IP address, VLAN tags
- :param numpkts: Number of packets to send
:param duration: Time to wait to receive packets
:returns: dictionary of strings with following data:
"""
pass
- def send_burst_traffic(self, traffic=None, numpkts=100, duration=20):
+ def send_burst_traffic(self, traffic=None, duration=20):
"""
Do nothing.
"""
"""
raise NotImplementedError('Please call an implementation.')
- def send_burst_traffic(self, traffic=None, numpkts=100, duration=20):
+ def send_burst_traffic(self, traffic=None, duration=20):
"""Send a burst of traffic.
- Send a ``numpkts`` packets of traffic, using ``traffic``
+ Send a ``traffic['burst_size']`` packets of traffic, using ``traffic``
configuration, for ``duration`` seconds.
Attributes:
:param traffic: Detailed "traffic" spec, see design docs for details
- :param numpkts: Number of packets to send
:param duration: Time to wait to receive packets
:returns: dictionary of strings with following data:
pkt_a = STLPktBuilder(pkt=base_pkt_a / payload_a)
pkt_b = STLPktBuilder(pkt=base_pkt_b / payload_b)
- stream_1 = STLStream(packet=pkt_a,
- name='stream_1',
- mode=STLTXCont(percentage=traffic['frame_rate']))
- stream_2 = STLStream(packet=pkt_b,
- name='stream_2',
- mode=STLTXCont(percentage=traffic['frame_rate']))
lat_pps = settings.getValue('TRAFFICGEN_TREX_LATENCY_PPS')
- if lat_pps > 0:
- stream_1_lat = STLStream(packet=pkt_a,
+ if traffic['traffic_type'] == 'burst':
+ if lat_pps > 0:
+ # latency statistics are requested; in case of frame burst we can enable
+ # statistics for all frames
+ stream_1 = STLStream(packet=pkt_a,
flow_stats=STLFlowLatencyStats(pg_id=0),
- name='stream_1_lat',
- mode=STLTXCont(pps=lat_pps))
- stream_2_lat = STLStream(packet=pkt_b,
+ name='stream_1',
+ mode=STLTXSingleBurst(percentage=traffic['frame_rate'],
+ total_pkts=traffic['burst_size']))
+ stream_2 = STLStream(packet=pkt_b,
flow_stats=STLFlowLatencyStats(pg_id=1),
- name='stream_2_lat',
- mode=STLTXCont(pps=lat_pps))
+ name='stream_2',
+ mode=STLTXSingleBurst(percentage=traffic['frame_rate'],
+ total_pkts=traffic['burst_size']))
+ else:
+ stream_1 = STLStream(packet=pkt_a,
+ name='stream_1',
+ mode=STLTXSingleBurst(percentage=traffic['frame_rate'],
+ total_pkts=traffic['burst_size']))
+ stream_2 = STLStream(packet=pkt_b,
+ name='stream_2',
+ mode=STLTXSingleBurst(percentage=traffic['frame_rate'],
+ total_pkts=traffic['burst_size']))
+ else:
+ stream_1 = STLStream(packet=pkt_a,
+ name='stream_1',
+ mode=STLTXCont(percentage=traffic['frame_rate']))
+ stream_2 = STLStream(packet=pkt_b,
+ name='stream_2',
+ mode=STLTXCont(percentage=traffic['frame_rate']))
+ # workaround for latency statistics, which can't be enabled for streams
+ # with high framerate due to the huge performance impact
+ if lat_pps > 0:
+ stream_1_lat = STLStream(packet=pkt_a,
+ flow_stats=STLFlowLatencyStats(pg_id=0),
+ name='stream_1_lat',
+ mode=STLTXCont(pps=lat_pps))
+ stream_2_lat = STLStream(packet=pkt_b,
+ flow_stats=STLFlowLatencyStats(pg_id=1),
+ name='stream_2_lat',
+ mode=STLTXCont(pps=lat_pps))
return (stream_1, stream_2, stream_1_lat, stream_2_lat)
# since we can only control both ports at once take the lower of the two
max_speed = min(max_speed_1, max_speed_2)
gbps_speed = (max_speed / 1000) * (float(traffic['frame_rate']) / 100.0)
- self._logger.debug('Starting traffic at %s Gpbs speed', gbps_speed)
+ self._logger.debug('Starting traffic at %s Gbps speed', gbps_speed)
# for SR-IOV
if settings.getValue('TRAFFICGEN_TREX_PROMISCUOUS'):
result[ResultsConstants.FRAME_LOSS_PERCENT] = 100
if settings.getValue('TRAFFICGEN_TREX_LATENCY_PPS') > 0 and stats['latency']:
- result[ResultsConstants.MIN_LATENCY_NS] = (
- '{:.3f}'.format(
- (float(min(stats["latency"][0]["latency"]["total_min"],
- stats["latency"][1]["latency"]["total_min"])))))
-
- result[ResultsConstants.MAX_LATENCY_NS] = (
- '{:.3f}'.format(
- (float(max(stats["latency"][0]["latency"]["total_max"],
- stats["latency"][1]["latency"]["total_max"])))))
-
- result[ResultsConstants.AVG_LATENCY_NS] = (
- '{:.3f}'.format(
- float((stats["latency"][0]["latency"]["average"]+
- stats["latency"][1]["latency"]["average"])/2)))
+ try:
+ result[ResultsConstants.MIN_LATENCY_NS] = (
+ '{:.3f}'.format(
+ (float(min(stats["latency"][0]["latency"]["total_min"],
+ stats["latency"][1]["latency"]["total_min"])))))
+ except TypeError:
+ result[ResultsConstants.MIN_LATENCY_NS] = 'Unknown'
+
+ try:
+ result[ResultsConstants.MAX_LATENCY_NS] = (
+ '{:.3f}'.format(
+ (float(max(stats["latency"][0]["latency"]["total_max"],
+ stats["latency"][1]["latency"]["total_max"])))))
+ except TypeError:
+ result[ResultsConstants.MAX_LATENCY_NS] = 'Unknown'
+
+ try:
+ result[ResultsConstants.AVG_LATENCY_NS] = (
+ '{:.3f}'.format(
+ float((stats["latency"][0]["latency"]["average"]+
+ stats["latency"][1]["latency"]["average"])/2)))
+ except TypeError:
+ result[ResultsConstants.AVG_LATENCY_NS] = 'Unknown'
else:
result[ResultsConstants.MIN_LATENCY_NS] = 'Unknown'
raise NotImplementedError(
'Trex wait rfc2544 throughput not implemented')
- def send_burst_traffic(self, traffic=None, numpkts=100, duration=5):
- raise NotImplementedError(
- 'Trex send burst traffic not implemented')
+ def send_burst_traffic(self, traffic=None, duration=20):
+ """See ITrafficGenerator for description
+ """
+ self._logger.info("In Trex send_burst_traffic method")
+ self._params.clear()
+
+ self._params['traffic'] = self.traffic_defaults.copy()
+ if traffic:
+ self._params['traffic'] = merge_spec(
+ self._params['traffic'], traffic)
+
+ if settings.getValue('TRAFFICGEN_TREX_LEARNING_MODE'):
+ self.learning_packets(traffic)
+ self._logger.info("T-Rex sending traffic")
+ stats = self.generate_traffic(traffic, duration)
+
+ time.sleep(3) # allow packets to complete before reading stats
+
+ return self.calculate_results(stats)
def send_rfc2544_back2back(self, traffic=None, tests=1, duration=30,
lossrate=0.0):
self._xsocket.disconnect()
self._xsocket = None
- def send_burst_traffic(self, traffic=None, numpkts=100, duration=20):
+ def send_burst_traffic(self, traffic=None, duration=20):
"""Send a burst of traffic.
See ITrafficGenerator for description
if traffic:
self._params['traffic'] = merge_spec(self._params['traffic'],
traffic)
- self._start_traffic_api(numpkts)
+ self._start_traffic_api(traffic['burst_size'])
return self._stop_api_traffic()
def send_cont_traffic(self, traffic=None, duration=20):
Code Review / vswitchperf.git / commitdiff