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authorPeter Mikus <pmikus@cisco.com>2016-05-20 11:45:13 +0200
committerMiroslav Miklus <mmiklus@cisco.com>2016-07-19 12:32:58 +0000
commitbb69fe7a166277018230dfe79900f0cf1603a5d3 (patch)
tree1fb5192b4446553aef62cb330f1cfdc6b1290246 /resources
parentf7feaf7804f267c9d7880917f6baf9d1bdb21584 (diff)
CSIT-102: Add latency measurement to performance testing
- Add latency stream as a background stream in both directions - Latency background stream is not using the VM transformation engine. Raw stream with single packet is created. - Latency background stream has 1kpps rate with packet of same size as traffic stream. - Display latency values (min/avg/max) in results of TC and reporting remaining data including histogram and jitter inside of the search/pass keyword. Change-Id: I78ce4659b57caab08d5729f51a1e14d518fd3273 Signed-off-by: Peter Mikus <pmikus@cisco.com> Signed-off-by: pmikus <pmikus@cisco.com>
Diffstat (limited to 'resources')
-rw-r--r--resources/libraries/python/DropRateSearch.py6
-rw-r--r--resources/libraries/python/TrafficGenerator.py56
-rw-r--r--resources/libraries/robot/performance.robot37
-rwxr-xr-xresources/tools/t-rex/t-rex-stateless.py150
4 files changed, 177 insertions, 72 deletions
diff --git a/resources/libraries/python/DropRateSearch.py b/resources/libraries/python/DropRateSearch.py
index 1f8e5618fe..b0f15b25db 100644
--- a/resources/libraries/python/DropRateSearch.py
+++ b/resources/libraries/python/DropRateSearch.py
@@ -453,14 +453,14 @@ class DropRateSearch(object):
def verify_search_result(self):
"""Fail if search was not successful.
- :return: Result rate.
- :rtype: float
+ :return: Result rate and latency stats.
+ :rtype: tuple
"""
if self._search_result == SearchResults.FAILURE:
raise Exception('Search FAILED')
elif self._search_result in [SearchResults.SUCCESS,
SearchResults.SUSPICIOUS]:
- return self._search_result_rate
+ return self._search_result_rate, self._latency_stats
def binary_search(self, b_min, b_max, traffic_type, skip_max_rate=False):
"""Binary search of rate with loss below acceptance criteria.
diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py
index 91a43fb0ca..33ff597c8e 100644
--- a/resources/libraries/python/TrafficGenerator.py
+++ b/resources/libraries/python/TrafficGenerator.py
@@ -46,7 +46,10 @@ class TGDropRateSearchImpl(DropRateSearch):
unit_rate = str(rate) + self.get_rate_type_str()
tg_instance.trex_stl_start_remote_exec(self.get_duration(),
unit_rate, frame_size,
- traffic_type, False)
+ traffic_type)
+ # Get latency stats from stream
+ self._latency_stats = tg_instance.get_latency()
+
loss = tg_instance.get_loss()
sent = tg_instance.get_sent()
if self.loss_acceptance_type_is_percentage():
@@ -74,6 +77,7 @@ class TrafficGenerator(object):
self._result = None
self._loss = None
self._sent = None
+ self._latency = None
self._received = None
self._node = None
# T-REX interface order mapping
@@ -103,6 +107,14 @@ class TrafficGenerator(object):
"""
return self._received
+ def get_latency(self):
+ """Return min/avg/max latency.
+
+ :return: Latency stats.
+ :rtype: list
+ """
+ return self._latency
+
#pylint: disable=too-many-arguments, too-many-locals
def initialize_traffic_generator(self, tg_node, tg_if1, tg_if2,
tg_if1_adj_node, tg_if1_adj_if,
@@ -273,7 +285,8 @@ class TrafficGenerator(object):
raise RuntimeError('T-rex stateless runtime error')
def trex_stl_start_remote_exec(self, duration, rate, framesize,
- traffic_type, async_call, warmup_time=5):
+ traffic_type, async_call=False,
+ latency=True, warmup_time=5):
"""Execute script on remote node over ssh to start traffic.
:param duration: Time expresed in seconds for how long to send traffic.
@@ -281,12 +294,14 @@ class TrafficGenerator(object):
:param framesize: L2 frame size to send (without padding and IPG).
:param traffic_type: Traffic profile.
:param async_call: If enabled then don't wait for all incomming trafic.
+ :param latency: With latency measurement.
:param warmup_time: Warmup time period.
:type duration: int
:type rate: str
:type framesize: int
:type traffic_type: str
:type async_call: bool
+ :type latency: bool
:type warmup_time: int
:return: Nothing
"""
@@ -295,10 +310,9 @@ class TrafficGenerator(object):
_p0 = 1
_p1 = 2
- _async = ""
+ _async = "--async" if async_call else ""
+ _latency = "--latency" if latency else ""
- if async_call:
- _async = "--async"
if self._ifaces_reordered != 0:
_p0, _p1 = _p1, _p0
@@ -312,9 +326,10 @@ class TrafficGenerator(object):
"--p{5}_src_start_ip 20.20.20.1 "
"--p{5}_src_end_ip 20.20.20.254 "
"--p{5}_dst_start_ip 10.10.10.1 "
- "{6} --warmup_time={7}'".format(Constants.REMOTE_FW_DIR,
- duration, rate, framesize, _p0,
- _p1, _async, warmup_time),
+ "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
+ duration, rate, framesize,
+ _p0, _p1, _async, _latency,
+ warmup_time),
timeout=int(duration)+60)
elif traffic_type in ["3-node-IPv4"]:
(ret, stdout, stderr) = ssh.exec_command(
@@ -326,9 +341,10 @@ class TrafficGenerator(object):
"--p{5}_src_start_ip 20.20.20.2 "
"--p{5}_src_end_ip 20.20.20.254 "
"--p{5}_dst_start_ip 10.10.10.2 "
- "{6} --warmup_time={7}'".format(Constants.REMOTE_FW_DIR,
- duration, rate, framesize, _p0,
- _p1, _async, warmup_time),
+ "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
+ duration, rate, framesize,
+ _p0, _p1, _async, _latency,
+ warmup_time),
timeout=int(duration)+60)
elif traffic_type in ["3-node-IPv6"]:
(ret, stdout, stderr) = ssh.exec_command(
@@ -340,9 +356,10 @@ class TrafficGenerator(object):
"--p{5}_src_start_ip 2001:2::2 "
"--p{5}_src_end_ip 2001:2::FE "
"--p{5}_dst_start_ip 2001:1::2 "
- "{6} --warmup_time={7}'".format(Constants.REMOTE_FW_DIR,
- duration, rate, framesize, _p0,
- _p1, _async, warmup_time),
+ "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
+ duration, rate, framesize,
+ _p0, _p1, _async, _latency,
+ warmup_time),
timeout=int(duration)+60)
else:
raise NotImplementedError('Unsupported traffic type')
@@ -358,6 +375,7 @@ class TrafficGenerator(object):
self._received = None
self._sent = None
self._loss = None
+ self._latency = None
else:
# last line from console output
line = stdout.splitlines()[-1]
@@ -368,6 +386,9 @@ class TrafficGenerator(object):
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 stop_traffic_on_tg(self):
"""Stop all traffic on TG
@@ -380,17 +401,20 @@ class TrafficGenerator(object):
self.trex_stl_stop_remote_exec(self._node)
def send_traffic_on_tg(self, duration, rate, framesize,
- traffic_type, warmup_time=5, async_call=False):
+ traffic_type, warmup_time=5, async_call=False,
+ latency=True):
"""Send traffic from all configured interfaces on TG.
: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: Traffic profile.
+ :param latency: With latency measurement.
:type duration: str
:type rate: str
:type framesize: str
:type traffic_type: str
+ :type latency: bool
:return: TG output.
:rtype: str
"""
@@ -406,7 +430,7 @@ class TrafficGenerator(object):
raise Exception('TG subtype not defined')
elif node['subtype'] == NodeSubTypeTG.TREX:
self.trex_stl_start_remote_exec(duration, rate, framesize,
- traffic_type, async_call,
+ traffic_type, async_call, latency,
warmup_time=warmup_time)
else:
raise NotImplementedError("TG subtype not supported")
diff --git a/resources/libraries/robot/performance.robot b/resources/libraries/robot/performance.robot
index 4dcd84e223..63295b7159 100644
--- a/resources/libraries/robot/performance.robot
+++ b/resources/libraries/robot/performance.robot
@@ -343,8 +343,9 @@
| | Set Search Frame Size | ${framesize}
| | Set Search Rate Type pps
| | Linear Search | ${start_rate} | ${topology_type}
-| | ${rate_per_stream}= | Verify Search Result
+| | ${rate_per_stream} | ${latency}= | Verify Search Result
| | Display result of NDR search | ${rate_per_stream} | ${framesize} | 2
+| | ... | ${latency}
| | Traffic should pass with no loss | ${duration} | ${rate_per_stream}pps
| | ... | ${framesize} | ${topology_type}
| | ... | fail_on_loss=${False}
@@ -383,9 +384,10 @@
| | Run Keyword If | '${loss_acceptance_type}' == 'percentage'
| | ... | Set Loss Acceptance Type Percentage
| | Linear Search | ${start_rate} | ${topology_type}
-| | ${rate_per_stream}= | Verify Search Result
+| | ${rate_per_stream} | ${latency}= | Verify Search Result
| | Display result of PDR search | ${rate_per_stream} | ${framesize} | 2
| | ... | ${loss_acceptance} | ${loss_acceptance_type}
+| | ... | ${latency}
| | Traffic should pass with partial loss | ${duration} | ${rate_per_stream}pps
| | ... | ${framesize} | ${topology_type}
| | ... | ${loss_acceptance}
@@ -421,8 +423,9 @@
| | Set Search Rate Type pps
| | Set Binary Convergence Threshold | ${threshold}
| | Binary Search | ${binary_min} | ${binary_max} | ${topology_type}
-| | ${rate_per_stream}= | Verify Search Result
+| | ${rate_per_stream} | ${latency}= | Verify Search Result
| | Display result of NDR search | ${rate_per_stream} | ${framesize} | 2
+| | ... | ${latency}
| | Traffic should pass with no loss | ${duration} | ${rate_per_stream}pps
| | ... | ${framesize} | ${topology_type}
| | ... | fail_on_loss=${False}
@@ -463,9 +466,10 @@
| | ... | Set Loss Acceptance Type Percentage
| | Set Binary Convergence Threshold | ${threshold}
| | Binary Search | ${binary_min} | ${binary_max} | ${topology_type}
-| | ${rate_per_stream}= | Verify Search Result
+| | ${rate_per_stream} | ${latency}= | Verify Search Result
| | Display result of PDR search | ${rate_per_stream} | ${framesize} | 2
| | ... | ${loss_acceptance} | ${loss_acceptance_type}
+| | ... | ${latency}
| | Traffic should pass with partial loss | ${duration} | ${rate_per_stream}pps
| | ... | ${framesize} | ${topology_type}
| | ... | ${loss_acceptance}
@@ -502,8 +506,9 @@
| | Set Search Rate Type pps
| | Set Binary Convergence Threshold | ${threshold}
| | Combined Search | ${start_rate} | ${topology_type}
-| | ${rate_per_stream}= | Verify Search Result
+| | ${rate_per_stream} | ${latency}= | Verify Search Result
| | Display result of NDR search | ${rate_per_stream} | ${framesize} | 2
+| | ... | ${latency}
| | Traffic should pass with no loss | ${duration} | ${rate_per_stream}pps
| | ... | ${framesize} | ${topology_type}
| | ... | fail_on_loss=${False}
@@ -546,9 +551,10 @@
| | ... | Set Loss Acceptance Type Percentage
| | Set Binary Convergence Threshold | ${threshold}
| | Combined Search | ${start_rate} | ${topology_type}
-| | ${rate_per_stream}= | Verify Search Result
+| | ${rate_per_stream} | ${latency}= | Verify Search Result
| | Display result of PDR search | ${rate_per_stream} | ${framesize} | 2
| | ... | ${loss_acceptance} | ${loss_acceptance_type}
+| | ... | ${latency}
| | Traffic should pass with partial loss | ${duration} | ${rate_per_stream}pps
| | ... | ${framesize} | ${topology_type}
| | ... | ${loss_acceptance}
@@ -563,14 +569,17 @@
| | ... | - ${rate_per_stream} - Measured rate per stream [pps]. Type: string
| | ... | - ${framesize} - L2 Frame Size [B]. Type: integer
| | ... | - ${nr_streams} - Total number of streams. Type: integer
+| | ... | - ${latency} - Latency stats. Type: dictionary
| | ...
| | ... | *Return:*
| | ... | - No value returned
| | ...
| | ... | *Example:*
| | ...
-| | ... | \| Display result of NDR search \| 4400000 \| 64 \| 2
+| | ... | \| Display result of NDR search \| 4400000 \| 64 \| 2 \
+| | ... | \| (0, 10/10/10) \|
| | [Arguments] | ${rate_per_stream} | ${framesize} | ${nr_streams}
+| | ... | ${latency}
| | ${rate_total}= | Evaluate | ${rate_per_stream}*${nr_streams}
| | ${bandwidth_total}= | Evaluate | ${rate_total}*(${framesize}+20)*8/(10**9)
| | Set Test Message | FINAL_RATE: ${rate_total} pps
@@ -578,6 +587,9 @@
| | ... | append=yes
| | Set Test Message | ${\n}FINAL_BANDWIDTH: ${bandwidth_total} Gbps (untagged)
| | ... | append=yes
+| | :FOR | ${idx} | ${lat} | IN ENUMERATE | @{latency}
+| | | Set Test Message | ${\n}LATENCY_STREAM_${idx}: ${lat} usec (min/avg/max)
+| | ... | append=yes
| Display result of PDR search
| | [Documentation] | Display result of PDR search in packet per seconds (total
@@ -589,6 +601,7 @@
| | ... | - ${nr_streams} - Total number of streams. Type: integer
| | ... | - ${loss_acceptance} - Accepted loss during search. Type: float
| | ... | - ${loss_acceptance_type} - Percentage or frames. Type: string
+| | ... | - ${latency} - Latency stats. Type: dictionary
| | ...
| | ... | *Return:*
| | ... | - No value returned
@@ -596,9 +609,9 @@
| | ... | *Example:*
| | ...
| | ... | \| Display result of PDR search \| 4400000 \| 64 \| 2 \| 0.5 \
-| | ... | \| percentage
+| | ... | \| percentage \| (0, 10/10/10) \|
| | [Arguments] | ${rate_per_stream} | ${framesize} | ${nr_streams}
-| | ... | ${loss_acceptance} | ${loss_acceptance_type}
+| | ... | ${loss_acceptance} | ${loss_acceptance_type} | ${latency}
| | ${rate_total}= | Evaluate | ${rate_per_stream}*${nr_streams}
| | ${bandwidth_total}= | Evaluate | ${rate_total}*(${framesize}+20)*8/(10**9)
| | Set Test Message | FINAL_RATE: ${rate_total} pps
@@ -606,6 +619,9 @@
| | ... | append=yes
| | Set Test Message | ${\n}FINAL_BANDWIDTH: ${bandwidth_total} Gbps (untagged)
| | ... | append=yes
+| | :FOR | ${idx} | ${lat} | IN ENUMERATE | @{latency}
+| | | Set Test Message | ${\n}LATENCY_STREAM_${idx}: ${lat} usec (min/avg/max)
+| | ... | append=yes
| | Set Test Message | ${\n}LOSS_ACCEPTANCE: ${loss_acceptance} ${loss_acceptance_type}
| | ... | append=yes
@@ -670,7 +686,8 @@
| Clear and show runtime counters with running traffic
| | [Arguments] | ${duration} | ${rate} | ${framesize} | ${topology_type}
| | Send traffic on tg | -1 | ${rate} | ${framesize}
-| | ... | ${topology_type} | warmup_time=0 | async_call=True
+| | ... | ${topology_type} | warmup_time=0 | async_call=${True}
+| | ... | latency=${False}
| | Clear runtime counters on all DUTs
| | Sleep | ${duration}
| | Show runtime counters on all DUTs
diff --git a/resources/tools/t-rex/t-rex-stateless.py b/resources/tools/t-rex/t-rex-stateless.py
index 77895d7b68..7ff4c3713c 100755
--- a/resources/tools/t-rex/t-rex-stateless.py
+++ b/resources/tools/t-rex/t-rex-stateless.py
@@ -109,7 +109,7 @@ def create_packets(traffic_options, frame_size=64):
:type traffic_options: list
:type frame_size: int
:return: Packet instances.
- :rtype STLPktBuilder
+ :rtype: Tuple of STLPktBuilder
"""
if frame_size < 64:
@@ -150,11 +150,15 @@ def create_packets(traffic_options, frame_size=64):
], split_by_field="src")
pkt_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
- fsize_no_fcs-len(base_pkt_a)), vm=vm1)
+ max(0, fsize_no_fcs-len(base_pkt_a))), vm=vm1)
pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
- fsize_no_fcs-len(base_pkt_b)), vm=vm2)
+ max(0, fsize_no_fcs-len(base_pkt_b))), vm=vm2)
+ lat_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
+ max(0, fsize_no_fcs-len(base_pkt_a))))
+ lat_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
+ max(0, fsize_no_fcs-len(base_pkt_b))))
- return(pkt_a, pkt_b)
+ return(pkt_a, pkt_b, lat_a, lat_b)
def create_packets_v6(traffic_options, frame_size=78):
@@ -165,7 +169,7 @@ def create_packets_v6(traffic_options, frame_size=78):
:type traffic_options: List
:type frame_size: int
:return: Packet instances.
- :rtype STLPktBuilder
+ :rtype: Tuple of STLPktBuilder
"""
if frame_size < 78:
@@ -213,25 +217,36 @@ def create_packets_v6(traffic_options, frame_size=78):
max(0, fsize_no_fcs-len(base_pkt_a))), vm=vm1)
pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
max(0, fsize_no_fcs-len(base_pkt_b))), vm=vm2)
+ lat_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
+ max(0, fsize_no_fcs-len(base_pkt_a))))
+ lat_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
+ max(0, fsize_no_fcs-len(base_pkt_b))))
- return(pkt_a, pkt_b)
+ return(pkt_a, pkt_b, lat_a, lat_b)
-def simple_burst(pkt_a, pkt_b, duration, rate, warmup_time, async_start):
+def simple_burst(pkt_a, pkt_b, pkt_lat_a, pkt_lat_b, duration, rate,
+ warmup_time, async_start, latency):
"""Run the traffic with specific parameters.
:param pkt_a: Base packet for stream 1.
:param pkt_b: Base packet for stream 2.
+ :param pkt_lat_a: Base packet for latency stream 1.
+ :param pkt_lat_b: Base packet for latency stream 2.
:param duration: Duration of traffic run in seconds (-1=infinite).
:param rate: Rate of traffic run [percentage, pps, bps].
:param warmup_time: Warm up duration.
- :async_start: Start the traffic and exit
+ :param async_start: Start the traffic and exit.
+ :param latency: With latency stats.
:type pkt_a: STLPktBuilder
:type pkt_b: STLPktBuilder
+ :type pkt_lat_a: STLPktBuilder
+ :type pkt_lat_b: STLPktBuilder
:type duration: int
:type rate: string
:type warmup_time: int
:type async_start: bool
+ :type latency: bool
:return: nothing
"""
@@ -242,37 +257,60 @@ def simple_burst(pkt_a, pkt_b, duration, rate, warmup_time, async_start):
total_sent = 0
lost_a = 0
lost_b = 0
+ lat_a = 'NA'
+ lat_b = 'NA'
try:
# turn this off if too many logs
#client.set_verbose("high")
- # create two streams
- stream1 = STLStream(packet=pkt_a,
- mode=STLTXCont(pps=100))
-
- # second stream with a phase of 10ns (inter stream gap)
- stream2 = STLStream(packet=pkt_b,
- isg=10.0,
- mode=STLTXCont(pps=100))
-
# connect to server
client.connect()
# prepare our ports (my machine has 0 <--> 1 with static route)
client.reset(ports=[0, 1])
- # add both streams to ports
+ # create two traffic streams without latency stats
+ stream1 = STLStream(packet=pkt_a,
+ mode=STLTXCont(pps=1000))
+ # second traffic stream with a phase of 10ns (inter stream gap)
+ stream2 = STLStream(packet=pkt_b,
+ isg=10.0,
+ mode=STLTXCont(pps=1000))
client.add_streams(stream1, ports=[0])
client.add_streams(stream2, ports=[1])
+ if latency:
+ # create two traffic streams with latency stats
+ lat_stream1 = STLStream(packet=pkt_lat_a,
+ flow_stats=STLFlowLatencyStats(pg_id=0),
+ mode=STLTXCont(pps=1000))
+ # second traffic stream with a phase of 10ns (inter stream gap)
+ lat_stream2 = STLStream(packet=pkt_lat_b,
+ isg=10.0,
+ flow_stats=STLFlowLatencyStats(pg_id=1),
+ mode=STLTXCont(pps=1000))
+ client.add_streams(lat_stream1, ports=[0])
+ client.add_streams(lat_stream2, ports=[1])
+
#warmup phase
if warmup_time > 0:
+ # clear the stats before injecting
client.clear_stats()
+
+ # choose rate and start traffic
client.start(ports=[0, 1], mult=rate, duration=warmup_time)
+
+ # block until done
client.wait_on_traffic(ports=[0, 1], timeout=(warmup_time+30))
+
+ if client.get_warnings():
+ for warning in client.get_warnings():
+ print_error(warning)
+
+ # read the stats after the test
stats = client.get_stats()
- print stats
+
print "#####warmup statistics#####"
print json.dumps(stats, indent=4,
separators=(',', ': '), sort_keys=True)
@@ -282,11 +320,8 @@ def simple_burst(pkt_a, pkt_b, duration, rate, warmup_time, async_start):
print "\npackets lost from 0 --> 1: {0} pkts".format(lost_a)
print "packets lost from 1 --> 0: {0} pkts".format(lost_b)
-
# clear the stats before injecting
client.clear_stats()
- total_rcvd = 0
- total_sent = 0
lost_a = 0
lost_b = 0
@@ -297,16 +332,29 @@ def simple_burst(pkt_a, pkt_b, duration, rate, warmup_time, async_start):
# block until done
client.wait_on_traffic(ports=[0, 1], timeout=(duration+30))
+ if client.get_warnings():
+ for warning in client.get_warnings():
+ print_error(warning)
+
# read the stats after the test
stats = client.get_stats()
print "#####statistics#####"
print json.dumps(stats, indent=4,
separators=(',', ': '), sort_keys=True)
-
lost_a = stats[0]["opackets"] - stats[1]["ipackets"]
lost_b = stats[1]["opackets"] - stats[0]["ipackets"]
+ if latency:
+ lat_a = "/".join((\
+ str(stats["latency"][0]["latency"]["total_min"]),\
+ str(stats["latency"][0]["latency"]["average"]),\
+ str(stats["latency"][0]["latency"]["total_max"])))
+ lat_b = "/".join((\
+ str(stats["latency"][1]["latency"]["total_min"]),\
+ str(stats["latency"][1]["latency"]["average"]),\
+ str(stats["latency"][1]["latency"]["total_max"])))
+
total_sent = stats[0]["opackets"] + stats[1]["opackets"]
total_rcvd = stats[0]["ipackets"] + stats[1]["ipackets"]
@@ -322,8 +370,11 @@ def simple_burst(pkt_a, pkt_b, duration, rate, warmup_time, async_start):
client.disconnect(stop_traffic=False, release_ports=True)
else:
client.disconnect()
- print "rate={0}, totalReceived={1}, totalSent={2}, frameLoss={3}"\
- .format(rate, total_rcvd, total_sent, lost_a+lost_b)
+ print "rate={0}, totalReceived={1}, totalSent={2}, "\
+ "frameLoss={3}, latencyStream0(usec)={4}, "\
+ "latencyStream1(usec)={5}".format(rate, total_rcvd,\
+ total_sent, lost_a+lost_b, lat_a, lat_b)
+
def print_error(msg):
"""Print error message on stderr.
@@ -336,16 +387,12 @@ def print_error(msg):
sys.stderr.write(msg+'\n')
-def main():
- """Main function."""
+def parse_args():
+ """Parse arguments from cmd line.
- _traffic_options = {}
- #default L3 profile is IPv4
- _use_ipv6 = False
- #default warmup time is 5 seconds
- _warmup_time = 5
- #default behaviour of this script is sychronous
- _async_call = False
+ :return: Parsed arguments.
+ :rtype ArgumentParser
+ """
parser = argparse.ArgumentParser()
parser.add_argument("-d", "--duration", required=True, type=int,
@@ -355,10 +402,16 @@ def main():
parser.add_argument("-r", "--rate", required=True,
help="Traffic rate with included units (%, pps)")
parser.add_argument("-6", "--use_IPv6", action="store_true",
+ default=False,
help="Use IPv6 traffic profile instead of IPv4")
parser.add_argument("--async", action="store_true",
+ default=False,
help="Non-blocking call of the script")
+ parser.add_argument("--latency", action="store_true",
+ default=False,
+ help="Add latency stream")
parser.add_argument("-w", "--warmup_time", type=int,
+ default=5,
help="Traffic warmup time in seconds, 0 = disable")
# parser.add_argument("--p1_src_mac",
# help="Port 1 source MAC address")
@@ -385,29 +438,40 @@ def main():
# parser.add_argument("--p2_dst_end_ip",
# help="Port 2 destination end IP address")
- args = parser.parse_args()
+ return parser.parse_args()
+
+
+def main():
+ """Main function."""
+
+ args = parse_args()
_duration = args.duration
_frame_size = args.frame_size
_rate = args.rate
_use_ipv6 = args.use_IPv6
_async_call = args.async
+ _latency = args.latency
+ _warmup_time = args.warmup_time
- if args.warmup_time is not None:
- _warmup_time = args.warmup_time
-
+ _traffic_options = {}
for attr in [a for a in dir(args) if a.startswith('p')]:
if getattr(args, attr) is not None:
_traffic_options[attr] = getattr(args, attr)
if _use_ipv6:
- pkt_a, pkt_b = create_packets_v6(_traffic_options,
- frame_size=_frame_size)
+ # WARNING: Trex limitation to IPv4 only. IPv6 is not yet supported.
+ print_error('IPv6 latency is not supported yet. Running without lat.')
+ _latency = False
+
+ pkt_a, pkt_b, lat_a, lat_b = create_packets_v6(_traffic_options,
+ frame_size=_frame_size)
else:
- pkt_a, pkt_b = create_packets(_traffic_options,
- frame_size=_frame_size)
+ pkt_a, pkt_b, lat_a, lat_b = create_packets(_traffic_options,
+ frame_size=_frame_size)
- simple_burst(pkt_a, pkt_b, _duration, _rate, _warmup_time, _async_call)
+ simple_burst(pkt_a, pkt_b, lat_a, lat_b, _duration, _rate, _warmup_time,
+ _async_call, _latency)
if __name__ == "__main__":
sys.exit(main())