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-rw-r--r--resources/libraries/python/TrafficGenerator.py251
-rw-r--r--resources/libraries/python/autogen/Regenerator.py6
-rw-r--r--resources/libraries/robot/ip/nat.robot10
-rw-r--r--resources/libraries/robot/performance/performance_utils.robot66
-rw-r--r--resources/libraries/robot/performance/performance_vars.robot51
5 files changed, 313 insertions, 71 deletions
diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py
index 23337b2848..30be3b9eba 100644
--- a/resources/libraries/python/TrafficGenerator.py
+++ b/resources/libraries/python/TrafficGenerator.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2020 Cisco and/or its affiliates.
+# Copyright (c) 2021 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:
@@ -171,6 +171,11 @@ class TrafficGenerator(AbstractMeasurer):
self.sleep_till_duration = None
self.transaction_type = None
self.duration_limit = None
+ self.ramp_up_start = None
+ self.ramp_up_stop = None
+ self.ramp_up_rate = None
+ self.ramp_up_duration = None
+ self.state_timeout = None
# Transient data needed for async measurements.
self._xstats = (None, None)
# TODO: Rename "xstats" to something opaque, so T-Rex is not privileged?
@@ -404,12 +409,11 @@ class TrafficGenerator(AbstractMeasurer):
raise RuntimeError(u"Start TRex failed!")
# Test T-Rex API responsiveness.
- cmd = u"python3"
- cmd += f" {Constants.REMOTE_FW_DIR}/GPL/tools/trex/"
+ cmd = f"python3 {Constants.REMOTE_FW_DIR}/GPL/tools/trex/"
if osi_layer in (u"L2", u"L3"):
- cmd += f"trex_stl_assert.py"
+ cmd += u"trex_stl_assert.py"
elif osi_layer == u"L7":
- cmd += f"trex_astf_assert.py"
+ cmd += u"trex_astf_assert.py"
else:
raise ValueError(u"Unknown OSI layer!")
try:
@@ -523,7 +527,43 @@ class TrafficGenerator(AbstractMeasurer):
raise ValueError(u"Unsupported T-Rex traffic profile!")
self._stop_time = time.monotonic()
- return self.get_measurement_result()
+ return self._get_measurement_result()
+
+ def _compute_duration(self, duration, multiplier):
+ """Compute duration for profile driver.
+
+ The final result is influenced by transaction scale and duration limit.
+ It is assumed a higher level function has already set those to self.
+ The duration argument is the target value from search point of view,
+ before the overrides are applied here.
+
+ Minus one (signalling async traffic start) is kept.
+
+ Completeness flag is also included. Duration limited or async trials
+ are not considered complete for ramp-up purposes.
+
+ :param duration: Time expressed in seconds for how long to send traffic.
+ :param multiplier: Traffic rate in transactions per second.
+ :type duration: float
+ :type multiplier: float
+ :returns: New duration and whether it was a complete ramp-up candidate.
+ :rtype: float, bool
+ """
+ if duration < 0.0:
+ # Keep the async -1.
+ return duration, False
+ computed_duration = duration
+ if self.transaction_scale:
+ computed_duration = self.transaction_scale / multiplier
+ # Log the computed duration,
+ # so we can compare with what telemetry suggests
+ # the real duration was.
+ logger.debug(f"Expected duration {computed_duration}")
+ computed_duration += 0.1115
+ if not self.duration_limit:
+ return computed_duration, True
+ limited_duration = min(computed_duration, self.duration_limit)
+ return limited_duration, (limited_duration == computed_duration)
def trex_astf_start_remote_exec(
self, duration, multiplier, async_call=False):
@@ -571,19 +611,9 @@ class TrafficGenerator(AbstractMeasurer):
if not isinstance(duration, (float, int)):
duration = float(duration)
- # Duration logic.
- computed_duration = duration
- if duration > 0.0:
- if self.transaction_scale:
- computed_duration = self.transaction_scale / multiplier
- # Log the computed duration,
- # so we can compare with what telemetry suggests
- # the real duration was.
- logger.debug(f"Expected duration {computed_duration}")
- computed_duration += 0.1115
- # Else keep -1.
- if self.duration_limit:
- computed_duration = min(computed_duration, self.duration_limit)
+ # TODO: Refactor the code so duration is computed only once,
+ # and both the initial and the computed durations are logged.
+ computed_duration, _ = self._compute_duration(duration, multiplier)
command_line = OptionString().add(u"python3")
dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
@@ -687,8 +717,10 @@ class TrafficGenerator(AbstractMeasurer):
p_0, p_1 = (1, 0) if self._ifaces_reordered else (0, 1)
if not isinstance(duration, (float, int)):
duration = float(duration)
- if self.duration_limit:
- duration = min(duration, self.duration_limit)
+
+ # TODO: Refactor the code so duration is computed only once,
+ # and both the initial and the computed durations are logged.
+ duration, _ = self._compute_duration(duration=duration, multiplier=rate)
command_line = OptionString().add(u"python3")
dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
@@ -755,6 +787,10 @@ class TrafficGenerator(AbstractMeasurer):
transaction_type=u"packet",
duration_limit=0.0,
use_latency=False,
+ ramp_up_rate=None,
+ ramp_up_duration=None,
+ state_timeout=300.0,
+ ramp_up_only=False,
):
"""Send traffic from all configured interfaces on TG.
@@ -775,6 +811,8 @@ class TrafficGenerator(AbstractMeasurer):
Bidirectional STL profiles are treated as transactions with two packets.
+ The return value is None for async.
+
:param duration: Duration of test traffic generation in seconds.
:param rate: Traffic rate in transactions per second.
:param frame_size: Frame size (L2) in Bytes.
@@ -797,6 +835,10 @@ class TrafficGenerator(AbstractMeasurer):
duration.
:param use_latency: Whether to measure latency during the trial.
Default: False.
+ :param ramp_up_rate: Rate to use in ramp-up trials [pps].
+ :param ramp_up_duration: Duration of ramp-up trials [s].
+ :param state_timeout: Time of life of DUT state [s].
+ :param ramp_up_only: If true, do not perform main trial measurement.
:type duration: float
:type rate: float
:type frame_size: str
@@ -809,8 +851,12 @@ class TrafficGenerator(AbstractMeasurer):
:type transaction_type: str
:type duration_limit: float
:type use_latency: bool
+ :type ramp_up_rate: float
+ :type ramp_up_duration: float
+ :type state_timeout: float
+ :type ramp_up_only: bool
:returns: TG results.
- :rtype: str
+ :rtype: ReceiveRateMeasurement or None
:raises ValueError: If TG traffic profile is not supported.
"""
self.set_rate_provider_defaults(
@@ -823,10 +869,19 @@ class TrafficGenerator(AbstractMeasurer):
transaction_type=transaction_type,
duration_limit=duration_limit,
use_latency=use_latency,
+ ramp_up_rate=ramp_up_rate,
+ ramp_up_duration=ramp_up_duration,
+ state_timeout=state_timeout,
+ )
+ return self._send_traffic_on_tg_with_ramp_up(
+ duration=duration,
+ rate=rate,
+ async_call=async_call,
+ ramp_up_only=ramp_up_only,
)
- self._send_traffic_on_tg_internal(duration, rate, async_call)
- def _send_traffic_on_tg_internal(self, duration, rate, async_call=False):
+ def _send_traffic_on_tg_internal(
+ self, duration, rate, async_call=False):
"""Send traffic from all configured interfaces on TG.
This is an internal function, it assumes set_rate_provider_defaults
@@ -838,6 +893,9 @@ class TrafficGenerator(AbstractMeasurer):
need to specify their own values, and we do not want the measure call
to overwrite them with defaults.
+ This function is used both for automated ramp-up trials
+ and for explicitly called trials.
+
:param duration: Duration of test traffic generation in seconds.
:param rate: Traffic rate in transactions per second.
:param async_call: Async mode.
@@ -845,7 +903,7 @@ class TrafficGenerator(AbstractMeasurer):
:type rate: float
:type async_call: bool
:returns: TG results.
- :rtype: str
+ :rtype: ReceiveRateMeasurement or None
:raises ValueError: If TG traffic profile is not supported.
"""
subtype = check_subtype(self._node)
@@ -863,7 +921,103 @@ class TrafficGenerator(AbstractMeasurer):
else:
raise ValueError(u"Unsupported T-Rex traffic profile!")
- return self._result
+ return None if async_call else self._get_measurement_result()
+
+ def _send_traffic_on_tg_with_ramp_up(
+ self, duration, rate, async_call=False, ramp_up_only=False):
+ """Send traffic from all interfaces on TG, maybe after ramp-up.
+
+ This is an internal function, it assumes set_rate_provider_defaults
+ has been called to remember most values.
+ The reason why need to remember various values is that
+ the traffic can be asynchronous, and parsing needs those values.
+ The reason why this is a separate function from the one
+ which calls set_rate_provider_defaults is that some search algorithms
+ need to specify their own values, and we do not want the measure call
+ to overwrite them with defaults.
+
+ If ramp-up tracking is detected, a computation is performed,
+ and if state timeout is near, trial at ramp-up rate and duration
+ is inserted before the main trial measurement.
+
+ The ramp_up_only parameter forces a ramp-up without immediate
+ trial measurement, which is useful in case self remembers
+ a previous ramp-up trial that belongs to a different test (phase).
+
+ Return None if trial is async or ramp-up only.
+
+ :param duration: Duration of test traffic generation in seconds.
+ :param rate: Traffic rate in transactions per second.
+ :param async_call: Async mode.
+ :param ramp_up_only: If true, do not perform main trial measurement.
+ :type duration: float
+ :type rate: float
+ :type async_call: bool
+ :type ramp_up_only: bool
+ :returns: TG results.
+ :rtype: ReceiveRateMeasurement or None
+ :raises ValueError: If TG traffic profile is not supported.
+ """
+ complete = False
+ if self.ramp_up_rate:
+ # Figure out whether we need to insert a ramp-up trial.
+ # TODO: Give up on async_call=True?
+ if self.ramp_up_start is None:
+ # We never ramped up yet.
+ ramp_up_needed = True
+ else:
+ # We ramped up before, but maybe it was too long ago.
+ # Adding a constant overhead to be safe.
+ time_now = time.monotonic() + 1.0
+ computed_duration, complete = self._compute_duration(
+ duration=duration,
+ multiplier=rate,
+ )
+ # There are two conditions for inserting ramp-up.
+ # If early sessions are expiring already,
+ # or if late sessions are to expire before measurement is over.
+ ramp_up_start_delay = time_now - self.ramp_up_start
+ ramp_up_stop_delay = time_now - self.ramp_up_stop
+ ramp_up_stop_delay += computed_duration
+ bigger_delay = max(ramp_up_start_delay, ramp_up_stop_delay)
+ # Final boolean decision.
+ ramp_up_needed = (bigger_delay >= self.state_timeout)
+ if ramp_up_needed:
+ logger.debug(
+ u"State may time out during next real trial, "
+ u"inserting a ramp-up trial."
+ )
+ self.ramp_up_start = time.monotonic()
+ self._send_traffic_on_tg_internal(
+ duration=self.ramp_up_duration,
+ rate=self.ramp_up_rate,
+ async_call=async_call,
+ )
+ self.ramp_up_stop = time.monotonic()
+ logger.debug(u"Ramp-up done.")
+ else:
+ logger.debug(
+ u"State will probably not time out during next real trial, "
+ u"no ramp-up trial needed just yet."
+ )
+ if ramp_up_only:
+ return None
+ trial_start = time.monotonic()
+ result = self._send_traffic_on_tg_internal(
+ duration=duration,
+ rate=rate,
+ async_call=async_call,
+ )
+ trial_end = time.monotonic()
+ if self.ramp_up_rate:
+ # Optimization: No loss acts as a good ramp-up, if it was complete.
+ if complete and result is not None and result.loss_count == 0:
+ logger.debug(u"Good trial acts as a ramp-up")
+ self.ramp_up_start = trial_start
+ self.ramp_up_stop = trial_end
+ else:
+ logger.debug(u"Loss or incomplete, does not act as a ramp-up.")
+ return result
def no_traffic_loss_occurred(self):
"""Fail if loss occurred in traffic run.
@@ -1030,7 +1184,7 @@ class TrafficGenerator(AbstractMeasurer):
self._l7_data[u"server"][u"tcp"][u"rx_bytes"] = \
int(self._result.get(u"server_tcp_rx_bytes", 0))
- def get_measurement_result(self):
+ def _get_measurement_result(self):
"""Return the result of last measurement as ReceiveRateMeasurement.
Separate function, as measurements can end either by time
@@ -1158,12 +1312,11 @@ class TrafficGenerator(AbstractMeasurer):
time_stop = time_start + duration
if self.resetter:
self.resetter()
- self._send_traffic_on_tg_internal(
+ result = self._send_traffic_on_tg_with_ramp_up(
duration=duration,
rate=transmit_rate,
async_call=False,
)
- result = self.get_measurement_result()
logger.debug(f"trial measurement result: {result!r}")
# In PLRsearch, computation needs the specified time to complete.
if self.sleep_till_duration:
@@ -1188,6 +1341,9 @@ class TrafficGenerator(AbstractMeasurer):
negative_loss=True,
sleep_till_duration=False,
use_latency=False,
+ ramp_up_rate=None,
+ ramp_up_duration=None,
+ state_timeout=300.0,
):
"""Store values accessed by measure().
@@ -1216,6 +1372,9 @@ class TrafficGenerator(AbstractMeasurer):
sleep until it matches duration. Needed for PLRsearch.
:param use_latency: Whether to measure latency during the trial.
Default: False.
+ :param ramp_up_rate: Rate to use in ramp-up trials [pps].
+ :param ramp_up_duration: Duration of ramp-up trials [s].
+ :param state_timeout: Time of life of DUT state [s].
:type frame_size: str or int
:type traffic_profile: str
:type ppta: int
@@ -1228,6 +1387,9 @@ class TrafficGenerator(AbstractMeasurer):
:type negative_loss: bool
:type sleep_till_duration: bool
:type use_latency: bool
+ :type ramp_up_rate: float
+ :type ramp_up_duration: float
+ :type state_timeout: float
"""
self.frame_size = frame_size
self.traffic_profile = str(traffic_profile)
@@ -1241,6 +1403,9 @@ class TrafficGenerator(AbstractMeasurer):
self.negative_loss = bool(negative_loss)
self.sleep_till_duration = bool(sleep_till_duration)
self.use_latency = bool(use_latency)
+ self.ramp_up_rate = float(ramp_up_rate)
+ self.ramp_up_duration = float(ramp_up_duration)
+ self.state_timeout = float(state_timeout)
class OptimizedSearch:
@@ -1270,6 +1435,9 @@ class OptimizedSearch:
transaction_scale=0,
transaction_type=u"packet",
use_latency=False,
+ ramp_up_rate=None,
+ ramp_up_duration=None,
+ state_timeout=300.0,
):
"""Setup initialized TG, perform optimized search, return intervals.
@@ -1312,6 +1480,9 @@ class OptimizedSearch:
transactions. Default: "packet".
:param use_latency: Whether to measure latency during the trial.
Default: False.
+ :param ramp_up_rate: Rate to use in ramp-up trials [pps].
+ :param ramp_up_duration: Duration of ramp-up trials [s].
+ :param state_timeout: Time of life of DUT state [s].
:type frame_size: str or int
:type traffic_profile: str
:type minimum_transmit_rate: float
@@ -1330,6 +1501,9 @@ class OptimizedSearch:
:type transaction_scale: int
:type transaction_type: str
:type use_latency: bool
+ :type ramp_up_rate: float
+ :type ramp_up_duration: float
+ :type state_timeout: float
:returns: Structure containing narrowed down NDR and PDR intervals
and their measurements.
:rtype: NdrPdrResult
@@ -1347,7 +1521,7 @@ class OptimizedSearch:
initial_trial_duration = 1.0
final_trial_duration = 2.0
number_of_intermediate_phases = 0
- timeout = 3600.0
+ timeout += transaction_scale * 3e-4
tg_instance.set_rate_provider_defaults(
frame_size=frame_size,
traffic_profile=traffic_profile,
@@ -1359,6 +1533,9 @@ class OptimizedSearch:
transaction_scale=transaction_scale,
transaction_type=transaction_type,
use_latency=use_latency,
+ ramp_up_rate=ramp_up_rate,
+ ramp_up_duration=ramp_up_duration,
+ state_timeout=state_timeout,
)
algorithm = MultipleLossRatioSearch(
measurer=tg_instance,
@@ -1394,6 +1571,9 @@ class OptimizedSearch:
transaction_scale=0,
transaction_type=u"packet",
use_latency=False,
+ ramp_up_rate=None,
+ ramp_up_duration=None,
+ state_timeout=300.0,
):
"""Setup initialized TG, perform soak search, return avg and stdev.
@@ -1430,6 +1610,9 @@ class OptimizedSearch:
transactions. Default: "packet".
:param use_latency: Whether to measure latency during the trial.
Default: False.
+ :param ramp_up_rate: Rate to use in ramp-up trials [pps].
+ :param ramp_up_duration: Duration of ramp-up trials [s].
+ :param state_timeout: Time of life of DUT state [s].
:type frame_size: str or int
:type traffic_profile: str
:type minimum_transmit_rate: float
@@ -1445,6 +1628,9 @@ class OptimizedSearch:
:type transaction_scale: int
:type transaction_type: str
:type use_latency: bool
+ :type ramp_up_rate: float
+ :type ramp_up_duration: float
+ :type state_timeout: float
:returns: Average and stdev of estimated aggregate rate giving PLR.
:rtype: 2-tuple of float
"""
@@ -1455,6 +1641,8 @@ class OptimizedSearch:
# TODO: Move to robot code? We have a single call site
# but MLRsearch has two and we want the two to be used similarly.
if transaction_scale:
+ # TODO: What is a good value for max scale?
+ # TODO: Scale the timeout with transaction scale.
timeout = 7200.0
tg_instance.set_rate_provider_defaults(
frame_size=frame_size,
@@ -1468,6 +1656,9 @@ class OptimizedSearch:
transaction_scale=transaction_scale,
transaction_type=transaction_type,
use_latency=use_latency,
+ ramp_up_rate=ramp_up_rate,
+ ramp_up_duration=ramp_up_duration,
+ state_timeout=state_timeout,
)
algorithm = PLRsearch(
measurer=tg_instance,
diff --git a/resources/libraries/python/autogen/Regenerator.py b/resources/libraries/python/autogen/Regenerator.py
index dd2672bd7c..a8de34ff7e 100644
--- a/resources/libraries/python/autogen/Regenerator.py
+++ b/resources/libraries/python/autogen/Regenerator.py
@@ -156,7 +156,11 @@ def add_default_testcases(testcase, iface, suite_id, file_out, tc_kwargs_list):
emit = False
if kwargs[u"frame_size"] not in MIN_FRAME_SIZE_VALUES:
emit = False
- if u"-cps-" in suite_id or u"-pps-" in suite_id:
+ if (
+ u"-cps-" in suite_id
+ or u"-pps-" in suite_id
+ or u"-tput-" in suite_id
+ ):
if kwargs[u"frame_size"] not in MIN_FRAME_SIZE_VALUES:
emit = False
if emit:
diff --git a/resources/libraries/robot/ip/nat.robot b/resources/libraries/robot/ip/nat.robot
index 75b8cce7b6..202ade34a5 100644
--- a/resources/libraries/robot/ip/nat.robot
+++ b/resources/libraries/robot/ip/nat.robot
@@ -1,4 +1,4 @@
-# Copyright (c) 2020 Cisco and/or its affiliates.
+# Copyright (c) 2021 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:
@@ -57,8 +57,8 @@
| | ... | ${dut1} | ${DUT1_${int}1}[0] | ${DUT1_${int}2}[0]
| | ${resetter} = | Set NAT44 Address Range
| | ... | ${dut1} | ${out_net} | ${out_net_end}
-| | ${ramp_up_duration} = | Get Ramp Up Duration
-| | Return From Keyword If | ${ramp_up_duration}
+| | ${ramp_up_rate} = | Get Ramp Up Rate
+| | Return From Keyword If | ${ramp_up_rate}
| | Set Test Variable | \${resetter}
# TODO: Remove when 'ip4.Initialize IPv4 forwarding in circular topology' KW
@@ -221,8 +221,8 @@
| |
| | ${resetter} = | Set DET44 Mapping
| | ... | ${node} | ${ip_in} | ${subnet_in} | ${ip_out} | ${subnet_out}
-| | ${ramp_up_duration} = | Get Ramp Up Duration
-| | Return From Keyword If | ${ramp_up_duration}
+| | ${ramp_up_rate} = | Get Ramp Up Rate
+| | Return From Keyword If | ${ramp_up_rate}
| | Set Test Variable | \${resetter}
| Initialize NAT44 deterministic mode in circular topology
diff --git a/resources/libraries/robot/performance/performance_utils.robot b/resources/libraries/robot/performance/performance_utils.robot
index 9a1de5cc77..638a834fc1 100644
--- a/resources/libraries/robot/performance/performance_utils.robot
+++ b/resources/libraries/robot/performance/performance_utils.robot
@@ -51,6 +51,8 @@
| | ... | \| Clear and show runtime counters with running traffic \|
| |
| | ${ppta} = | Get Packets Per Transaction Aggregated
+| | ${ramp_up_duration} = | Get Ramp Up Duration
+| | ${ramp_up_rate} = | Get Ramp Up Rate
| | ${runtime_duration} = | Get Runtime Duration
| | ${runtime_rate} = | Get Runtime Rate
| | ${traffic_directions} = | Get Traffic Directions
@@ -72,6 +74,8 @@
| | ... | transaction_scale=${transaction_scale}
| | ... | transaction_type=${transaction_type}
| | ... | duration_limit=${0.0}
+| | ... | ramp_up_duration=${ramp_up_duration}
+| | ... | ramp_up_rate=${ramp_up_rate}
| | FOR | ${action} | IN | @{pre_run_stats}
| | | Run Keyword | Additional Statistics Action For ${action}
| | END
@@ -89,7 +93,6 @@
| | ... | Fail if computed lower bound is 110% of the minimal rate or less.
| | ... | Input rates are unidirectional, in transaction per second.
| | ... | Reported result may contain aggregate pps rates, depending on test.
-| | ... | Currently, the min_rate value is hardcoded to match test teardowns.
| | ... | Call \${resetter} (if defined) to reset DUT state before each trial.
| |
| | ... | *Test (or broader scope) variables read:*
@@ -106,8 +109,10 @@
| |
| | # Get values via performance_vars.
| | ${max_rate} = | Get Max Rate
-| | ${min_rate} = | Get Min Rate
+| | ${min_rate_soft} = | Get Min Rate Soft
| | ${ppta} = | Get Packets Per Transaction Aggregated
+| | ${ramp_up_duration} = | Get Ramp Up Duration
+| | ${ramp_up_rate} = | Get Ramp Up Rate
| | ${resetter} = | Get Resetter
| | ${traffic_directions} = | Get Traffic Directions
| | ${transaction_duration} = | Get Transaction Duration
@@ -117,7 +122,7 @@
| | ${average} | ${stdev} = | Perform soak search
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
-| | ... | minimum_transmit_rate=${min_rate}
+| | ... | minimum_transmit_rate=${min_rate_soft}
| | ... | maximum_transmit_rate=${max_rate}
| | ... | plr_target=${1e-7}
| | ... | tdpt=${0.1}
@@ -131,11 +136,13 @@
| | ... | transaction_duration=${transaction_duration}
| | ... | transaction_type=${transaction_type}
| | ... | use_latency=${use_latency}
+| | ... | ramp_up_duration=${ramp_up_duration}
+| | ... | ramp_up_rate=${ramp_up_rate}
| | ${lower} | ${upper} = | Display result of soak search
| | ... | ${average} | ${stdev}
| | Set Test Variable | \${rate for teardown} | ${lower}
-| | Should Not Be True | 1.1 * ${min_rate} > ${lower}
-| | ... | Lower bound ${lower} too small for unidirectional minimum ${min_rate}.
+| | Should Not Be True | 1.1 * ${min_rate_soft} > ${lower}
+| | ... | Lower bound ${lower} too small for unidir minimum ${min_rate_soft}.
| Find NDR and PDR intervals using optimized search
| | [Documentation]
@@ -149,9 +156,6 @@
| | ... | even if latency stream is disabled in search. Their results
| | ... | are also displayed.
| | ... | Finally, two measurements for runtime stats are done (not displayed).
-| | ... | Currently, the min_rate value is hardcoded to 90kpps,
-| | ... | allowing measurement at 10% of the discovered rate
-| | ... | without breaking latency streams.
| | ... | Call \${resetter} (if defined) to reset DUT state before each trial.
| |
| | ... | *Test (or broader scope) variables read:*
@@ -175,10 +179,12 @@
| | # Get values via performance_vars.
| | ${disable_latency} = | Get Disable Latency
| | ${max_rate} = | Get Max Rate
-| | ${min_rate} = | Get Min Rate
+| | ${min_rate_soft} = | Get Min Rate Soft
| | # \${packet_loss_ratio} is used twice so it is worth a variable.
| | ${packet_loss_ratio} = | Get Packet Loss Ratio
| | ${ppta} = | Get Packets Per Transaction Aggregated
+| | ${ramp_up_duration} = | Get Ramp Up Duration
+| | ${ramp_up_rate} = | Get Ramp Up Rate
| | ${resetter} = | Get Resetter
| | ${traffic_directions} = | Get Traffic Directions
| | ${transaction_duration} = | Get Transaction Duration
@@ -188,7 +194,7 @@
| | ${result} = | Perform optimized ndrpdr search
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
-| | ... | minimum_transmit_rate=${min_rate}
+| | ... | minimum_transmit_rate=${min_rate_soft}
| | ... | maximum_transmit_rate=${max_rate}
| | ... | packet_loss_ratio=${packet_loss_ratio}
| | ... | final_relative_width=${0.005}
@@ -204,6 +210,8 @@
| | ... | transaction_scale=${transaction_scale}
| | ... | transaction_type=${transaction_type}
| | ... | use_latency=${use_latency}
+| | ... | ramp_up_duration=${ramp_up_duration}
+| | ... | ramp_up_rate=${ramp_up_rate}
| | Display result of NDRPDR search | ${result}
| | Check NDRPDR interval validity | ${result.pdr_interval}
| | ... | ${packet_loss_ratio}
@@ -238,7 +246,6 @@
| | ... | Find and return lower bound NDR (zero PLR)
| | ... | throughput using MLRsearch algorithm.
| | ... | Input and output rates are understood as uni-directional, in tps.
-| | ... | Currently, the min_rate value is hardcoded to match test teardowns.
| | ... | Call \${resetter} (if defined) to reset DUT state before each trial.
| |
| | ... | *Test (or broader scope) variables read:*
@@ -262,8 +269,10 @@
| | ... | \| \${throughpt}= \| Find Throughput Using MLRsearch \|
| |
| | ${max_rate} = | Get Max Rate
-| | ${min_rate} = | Get Min Rate
+| | ${min_rate_soft} = | Get Min Rate Soft
| | ${ppta} = | Get Packets Per Transaction Aggregated
+| | ${ramp_up_duration} = | Get Ramp Up Duration
+| | ${ramp_up_rate} = | Get Ramp Up Rate
| | ${resetter} = | Get Resetter
| | ${traffic_directions} = | Get Traffic Directions
| | ${transaction_duration} = | Get Transaction Duration
@@ -273,7 +282,7 @@
| | ${result} = | Perform optimized ndrpdr search
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
-| | ... | minimum_transmit_rate=${min_rate}
+| | ... | minimum_transmit_rate=${min_rate_soft}
| | ... | maximum_transmit_rate=${max_rate}
| | ... | packet_loss_ratio=${0.0}
| | ... | final_relative_width=${0.001}
@@ -289,6 +298,8 @@
| | ... | transaction_scale=${transaction_scale}
| | ... | transaction_type=${transaction_type}
| | ... | use_latency=${use_latency}
+| | ... | ramp_up_duration=${ramp_up_duration}
+| | ... | ramp_up_rate=${ramp_up_rate}
| | Check NDRPDR interval validity | ${result.pdr_interval}
| | ... | ${0.0}
| | Return From Keyword | ${result.pdr_interval.measured_low.target_tr}
@@ -313,9 +324,11 @@
| |
| | [Arguments] | ${message_prefix} | ${rate}
| |
-| | ${min_rate} = | Get Min Rate
+| | ${min_rate_hard} = | Get Min Rate Hard
| | ${ppta} = | Get Packets Per Transaction Aggregated
-| | ${real_rate} = | Evaluate | max(${rate}, ${min_rate})
+| | ${ramp_up_duration} = | Get Ramp Up Duration
+| | ${ramp_up_rate} = | Get Ramp Up Rate
+| | ${real_rate} = | Evaluate | max(${rate}, ${min_rate_hard})
| | ${traffic_directions} = | Get Traffic Directions
| | ${transaction_duration} = | Get Transaction Duration
| | ${transaction_scale} = | Get Transaction Scale
@@ -334,12 +347,14 @@
| | ... | transaction_scale=${transaction_scale}
| | ... | transaction_type=${transaction_type}
| | ... | use_latency=${True}
+| | ... | ramp_up_duration=${ramp_up_duration}
+| | ... | ramp_up_rate=${ramp_up_rate}
| | ${latency} = | Get Latency Int
| | Set Test Message | ${\n}${message_prefix} ${latency} | append=${True}
| Send ramp-up traffic
| | [Documentation]
-| | ... | Do nothing unless positive ramp-up duration is specified.
+| | ... | Fail unless positive ramp-up rate is specified.
| | ... | Else perform one trial with appropriate rate and duration.
| | ... | This is useful for tests that set DUT state via traffic.
| | ... | Rate has to bee low enough so packets are not lost,
@@ -362,9 +377,9 @@
| |
| | ... | \| Send ramp-up traffic \|
| |
-| | ${ramp_up_duration} = | Get Ramp Up Duration
-| | Run Keyword Unless | ${ramp_up_duration} > 0.0 | Return From Keyword
| | ${ramp_up_rate} = | Get Ramp Up Rate
+| | Run Keyword Unless | ${ramp_up_rate} > 0.0 | Fail | Ramp up rate missing!
+| | ${ramp_up_duration} = | Get Ramp Up Duration
| | ${ppta} = | Get Packets Per Transaction Aggregated
| | ${traffic_directions} = | Get Traffic Directions
| | ${transaction_duration} = | Get Transaction Duration
@@ -384,6 +399,9 @@
| | ... | transaction_duration=${transaction_duration}
| | ... | transaction_scale=${transaction_scale}
| | ... | transaction_type=${transaction_type}
+| | ... | ramp_up_duration=${ramp_up_duration}
+| | ... | ramp_up_rate=${ramp_up_rate}
+| | ... | ramp_up_only=${True}
| Send traffic at specified rate
| | [Documentation]
@@ -413,6 +431,8 @@
| | ... | ${use_latency}=${False} | ${duration_limit}=${0.0}
| |
| | ${ppta} = | Get Packets Per Transaction Aggregated
+| | ${ramp_up_duration} = | Get Ramp Up Duration
+| | ${ramp_up_rate} = | Get Ramp Up Rate
| | ${traffic_directions} = | Get Traffic Directions
| | ${transaction_duration} = | Get Transaction Duration
| | ${transaction_scale} = | Get Transaction Scale
@@ -424,7 +444,7 @@
| | ${results} = | Create List
| | FOR | ${i} | IN RANGE | ${trial_multiplicity}
| | | Call Resetter
-| | | Send traffic on tg
+| | | ${result}= | Send traffic on tg
| | | ... | duration=${trial_duration}
| | | ... | rate=${rate}
| | | ... | frame_size=${frame_size}
@@ -437,7 +457,8 @@
| | | ... | transaction_scale=${transaction_scale}
| | | ... | transaction_type=${transaction_type}
| | | ... | use_latency=${use_latency}
-| | | ${result}= | Get Measurement Result
+| | | ... | ramp_up_duration=${ramp_up_duration}
+| | | ... | ramp_up_rate=${ramp_up_rate}
| | | # Out of several quantities for aborted traffic (duration stretching),
| | | # the approximated receive rate is the best estimate we have.
| | | Append To List | ${results} | ${result.approximated_receive_rate}
@@ -625,6 +646,8 @@
| | [Arguments] | ${rate}
| |
| | ${ppta} = | Get Packets Per Transaction Aggregated
+| | ${ramp_up_duration} = | Get Ramp Up Duration
+| | ${ramp_up_rate} = | Get Ramp Up Rate
| | ${traffic_directions} = | Get Traffic Directions
| | ${transaction_duration} = | Get Transaction Duration
| | ${transaction_scale} = | Get Transaction Scale
@@ -640,11 +663,14 @@
| | ... | async_call=${True}
| | ... | duration_limit=${0.0}
| | ... | ppta=${ppta}
+| | ... | ramp_up_duration=${ramp_up_duration}
+| | ... | ramp_up_rate=${ramp_up_rate}
| | ... | traffic_directions=${traffic_directions}
| | ... | transaction_duration=${transaction_duration}
| | ... | transaction_scale=${transaction_scale}
| | ... | transaction_type=${transaction_type}
| | ... | use_latency=${use_latency}
+| | # TODO: Ramp-up?
| Stop Running Traffic
| | [Documentation]
diff --git a/resources/libraries/robot/performance/performance_vars.robot b/resources/libraries/robot/performance/performance_vars.robot
index 4a6d385363..9fff489279 100644
--- a/resources/libraries/robot/performance/performance_vars.robot
+++ b/resources/libraries/robot/performance/performance_vars.robot
@@ -60,25 +60,46 @@
| | Return From Keyword If | ${max_rate} | ${max_rate}
| | Fail | \${max_rate} is not defined. Call Set Max Rate And Jumbo keyword.
-| Get Min Rate
+| Get Min Rate Hard
| | [Documentation]
-| | ... | Return a hardcoded value. This is an abstraction, useful in case
-| | ... | we start allowing various other overrides or computations.
-| | ... | Call this just before calling a Python keyword,
-| | ... | as those have restricted access to Robot variables.
-| |
-| | ... | The return value controls the minimal unidirectional packet rate.
-| | ... | The value is also usable for minimal TPS value for ASTF tests.
+| | ... | Return a hardcoded value.
+| | ... | The return value controls the minimal unidirectional packet rate,
+| | ... | to be used anywhere, including latency measurements at 0% load.
| | ... | The current value is the smallest one permitted
| | ... | by STL profiles with latency streams.
| | ... | Return type: float.
| |
| | ... | *Example:*
| |
-| | ... | \| \${min_rate} = \| Get Min Rate \|
+| | ... | \| \${min_rate_hard} = \| Get Min Rate Hard \|
| |
| | Return From Keyword | ${9001.0}
+| Get Min Rate Soft
+| | [Documentation]
+| | ... | If ramp up rate is not defined, return the hard min value.
+| | ... | If ramp up rate is defined (and larger than hard min), return that.
+| | ... | The reason is, ramp up rate should already guarantee no loss.
+| |
+| | ... | The return value controls the minimal unidirectional packet rate,
+| | ... | to be used in various search algorithms.
+| | ... | Latency measurements may want even lower loads, use hard min for that.
+| |
+| | ... | The value is also usable for minimal TPS value for ASTF tests.
+| | ... | Return type: float.
+| |
+| | ... | Currently, undefined ramp up rate is reported as zero,
+| | ... | so we return the maximum of ramp up rate and the hard min rate.
+| |
+| | ... | *Example:*
+| |
+| | ... | \| \${min_rate_soft} = \| Get Min Rate Soft \|
+| |
+| | ${min_rate_hard} = | Get Min Rate Hard
+| | ${ramp_up_rate} = | Get Ramp Up Rate
+| | ${min_rate_soft} = | Evaluate | max(${ramp_up_rate}, ${min_rate_hard})
+| | Return From Keyword | ${min_rate_soft}
+
| Get Mrr Trial Duration
| | [Documentation]
| | ... | Return value from Constants. This is an abstraction, useful in case
@@ -179,7 +200,7 @@
| |
| | ... | The return value determines the required duration of ramp-up phase.
| | ... | Typically used to prepare a specific state on DUT.
-| | ... | If the value is zero, ramp-up phase is skipped.
+| | ... | If the value is zero, ramp-up phase is either skipped or size-limited.
| | ... | Return type: float.
| |
| | ... | *Example:*
@@ -192,12 +213,13 @@
| Get Ramp Up Rate
| | [Documentation]
| | ... | Return value of \${ramp_up_rate},
-| | ... | if not defined return \${max_rate}.
+| | ... | if not defined, return zero.
| |
| | ... | The return value determines the rate for ramp-up phase.
| | ... | Typically used to limit the rate when max rate
| | ... | would lose packets in the ramp up phase, thus not setting
| | ... | the DUT state correctly.
+| | ... | If the value is zero, ramp-up phase should be skipped.
| | ... | Return type: float.
| |
| | ... | *Example:*
@@ -205,13 +227,12 @@
| | ... | \| \${ramp_up_rate} = \| Get Ramp Up Rate \|
| |
| | ${ramp_up_rate} = | Get Variable Value | \${ramp_up_rate} | ${0.0}
-| | Return From Keyword If | ${ramp_up_rate} | ${ramp_up_rate}
-| | Run Keyword And Return | Get Max Rate
+| | Return From Keyword | ${ramp_up_rate}
| Get Rate For Teardown
| | [Documentation]
| | ... | Return value of \${rate_for_teardown},
-| | ... | if not defined (or zero) return the min rate.
+| | ... | if not defined (or zero) return the soft min rate.
| |
| | ... | The return value determines the rate for teardown trial,
| | ... | that is executed if a perf test fails.
@@ -226,7 +247,7 @@
| |
| | ${rate_for_teardown} = | Get Variable Value | \${rate_for_teardown} | ${0.0}
| | Return From Keyword If | ${rate_for_teardown} | ${rate_for_teardown}
-| | Run Keyword And Return | Get Min Rate
+| | Run Keyword And Return | Get Min Rate Soft
| Get Resetter
| | [Documentation]