# Copyright (c) 2020 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: # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. *** Settings *** | Library | Collections | Library | resources.libraries.python.topology.Topology | Library | resources.libraries.python.NodePath | Library | resources.libraries.python.InterfaceUtil | Library | resources.libraries.python.TrafficGenerator | Library | resources.libraries.python.TrafficGenerator.OptimizedSearch | Library | resources.libraries.python.TrafficGenerator.TGDropRateSearchImpl | Library | resources.libraries.python.Trace | Variables | resources/libraries/python/Constants.py | | Documentation | ... | Performance suite keywords - utilities to find and verify NDR and PDR. *** Keywords *** | Find NDR and PDR intervals using optimized search | | [Documentation] | | ... | Find boundaries for RFC2544 compatible NDR and PDR values | | ... | using an optimized search algorithm. | | ... | Display findings as a formatted test message. | | ... | Fail if a resulting lower bound has too high loss fraction. | | ... | Input rates are understood as uni-directional, | | ... | reported result contains aggregate rates. | | ... | Additional latency measurements are performed for smaller loads, | | ... | 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. | | | | ... | *Test (or broader scope) variables read:* | | ... | - traffic_profile - Name of module defining traffc for measurements. | | ... | Type: string | | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str | | ... | - max_rate - Calculated unidirectional maximal transmit rate [pps]. | | ... | Type: float | | | | ... | *Arguments:* | | ... | - packet_loss_ratio - Accepted loss during search. Type: float | | ... | - final_relative_width - Maximal width multiple of upper. Type: float | | ... | - final_trial_duration - Duration of final trials [s]. Type: float | | ... | - initial_trial_duration - Duration of initial trials [s]. Type: float | | ... | - intermediate phases - Number of intermediate phases [1]. Type: int | | ... | - timeout - Fail if search duration is longer [s]. Type: float | | ... | - doublings - How many doublings to do when expanding [1]. Type: int | | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic. | | ... | Type: int | | ... | - latency_duration - Duration for latency-specific trials. Type: float | | | | ... | *Example:* | | | | ... | \| Find NDR and PDR intervals using optimized search \| \${0.005} \ | | ... | \| \${0.005} \| \${30.0} \| \${1.0} \| \${2} \| \${600.0} \| \${2} \ | | ... | \| \${2} \| ${5.0} \| | | | | [Arguments] | ${packet_loss_ratio}=${0.005} | | ... | ${final_relative_width}=${0.005} | ${final_trial_duration}=${30.0} | | ... | ${initial_trial_duration}=${1.0} | | ... | ${number_of_intermediate_phases}=${2} | ${timeout}=${720.0} | | ... | ${doublings}=${2} | ${traffic_directions}=${2} | | ... | ${latency_duration}=${PERF_TRIAL_LATENCY_DURATION} | | | | ${result} = | Perform optimized ndrpdr search | ${frame_size} | | ... | ${traffic_profile} | ${90000} | ${max_rate} | | ... | ${packet_loss_ratio} | ${final_relative_width} | | ... | ${final_trial_duration} | ${initial_trial_duration} | | ... | ${number_of_intermediate_phases} | timeout=${timeout} | | ... | doublings=${doublings} | traffic_directions=${traffic_directions} | | Display result of NDRPDR search | ${result} | | Check NDRPDR interval validity | ${result.pdr_interval} | | ... | ${packet_loss_ratio} | | Check NDRPDR interval validity | ${result.ndr_interval} | | ${pdr_sum}= | Set Variable | ${result.pdr_interval.measured_low.target_tr} | | ${pdr_per_stream}= | Evaluate | ${pdr_sum} / float(${traffic_directions}) | | ${ndr_sum}= | Set Variable | ${result.ndr_interval.measured_low.target_tr} | | ${ndr_per_stream}= | Evaluate | ${ndr_sum} / float(${traffic_directions}) | | ${rate}= | Evaluate | 0.9 * ${pdr_per_stream} | | Measure and show latency at specified rate | Latency at 90% PDR: | | ... | ${latency_duration} | ${rate}pps | ${framesize} | | ... | ${traffic_profile} | ${traffic_directions} | | ${rate}= | Evaluate | 0.5 * ${pdr_per_stream} | | Measure and show latency at specified rate | Latency at 50% PDR: | | ... | ${latency_duration} | ${rate}pps | ${framesize} | | ... | ${traffic_profile} | ${traffic_directions} | | ${rate}= | Evaluate | 0.1 * ${pdr_per_stream} | | Measure and show latency at specified rate | Latency at 10% PDR: | | ... | ${latency_duration} | ${rate}pps | ${framesize} | | ... | ${traffic_profile} | ${traffic_directions} | | # Rate needs to be high enough for latency streams. | | ${rate}= | Set Variable | ${9500} | | Measure and show latency at specified rate | Latency at 0% PDR: | | ... | ${latency_duration} | ${rate}pps | ${framesize} | | ... | ${traffic_profile} | ${traffic_directions} | | # Finally, trials with runtime and other stats. | | # We expect NDR and PDR to have different-looking stats. | | Send traffic at specified rate | | ... | ${1.0} | ${pdr_per_stream}pps | ${framesize} | ${traffic_profile} | | ... | traffic_directions=${traffic_directions} | | Send traffic at specified rate | | ... | ${1.0} | ${ndr_per_stream}pps | ${framesize} | ${traffic_profile} | | ... | traffic_directions=${traffic_directions} | Find Throughput Using MLRsearch | | [Documentation] | | ... | Find and return lower bound PDR (zero PLR by default) | | ... | aggregate throughput using MLRsearch algorithm. | | ... | Input rates are understood as uni-directional. | | ... | Currently, the min_rate value is hardcoded to match test teardowns. | | | | ... | *Test (or broader scope) variables read:* | | ... | - traffic_profile - Name of module defining traffc for measurements. | | ... | Type: string | | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str | | ... | - max_rate - Calculated unidirectional maximal transmit rate [pps]. | | ... | Type: float | | | | ... | *Arguments:* | | ... | - packet_loss_ratio - Accepted loss during search. Type: float | | ... | - final_relative_width - Maximal width multiple of upper. Type: float | | ... | - final_trial_duration - Duration of final trials [s]. Type: float | | ... | - initial_trial_duration - Duration of initial trials [s]. Type: float | | ... | - intermediate phases - Number of intermediate phases [1]. Type: int | | ... | - timeout - Fail if search duration is longer [s]. Type: float | | ... | - doublings - How many doublings to do when expanding [1]. Type: int | | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic. | | ... | Type: int | | | | ... | *Returns:* | | ... | - Lower bound for bi-directional throughput at given PLR. Type: float | | | | ... | *Example:* | | | | ... | \| \${throughpt}= \| Find Throughput Using MLRsearch \| \${0} \ | | ... | \| \${0.001} \| \${10.0}\| \${1.0} \| \${1} \| \${720.0} \| \${2} \ | | ... | \| \${2} \| | | | | [Arguments] | ${packet_loss_ratio}=${0.0} | | ... | ${final_relative_width}=${0.001} | ${final_trial_duration}=${10.0} | | ... | ${initial_trial_duration}=${1.0} | | ... | ${number_of_intermediate_phases}=${1} | ${timeout}=${720.0} | | ... | ${doublings}=${2} | ${traffic_directions}=${2} | | | | ${result} = | Perform optimized ndrpdr search | ${frame_size} | | ... | ${traffic_profile} | ${10000} | ${max_rate} | | ... | ${packet_loss_ratio} | ${final_relative_width} | | ... | ${final_trial_duration} | ${initial_trial_duration} | | ... | ${number_of_intermediate_phases} | timeout=${timeout} | | ... | doublings=${doublings} | traffic_directions=${traffic_directions} | | Check NDRPDR interval validity | ${result.pdr_interval} | | ... | ${packet_loss_ratio} | | Return From Keyword | ${result.pdr_interval.measured_low.target_tr} | Find critical load using PLRsearch | | [Documentation] | | ... | Find boundaries for troughput (of given target loss ratio) | | ... | using PLRsearch algorithm. | | ... | Display results as formatted test message. | | ... | Fail if computed lower bound is below minimal rate. | | ... | Input rates are understood as uni-directional, | | ... | reported result contains aggregate rates. | | ... | Currently, the min_rate value is hardcoded to match test teardowns. | | | | ... | *Test (or broader scope) variables read:* | | ... | - traffic_profile - Name of module defining traffc for measurements. | | ... | Type: string | | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str | | ... | - max_rate - Calculated unidirectional maximal transmit rate [pps]. | | ... | Type: float | | | | ... | *Arguments:* | | ... | - packet_loss_ratio - Accepted loss during search. Type: float | | ... | - timeout - Stop when search duration is longer [s]. Type: float | | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic. | | ... | Type: int | | | | ... | *Example:* | | | | ... | \| Find critical load using PLR search \| \${1e-7} \| \${120} \ | | ... | \| \${2} \| | | | | [Arguments] | ${packet_loss_ratio}=${1e-7} | ${timeout}=${1800.0} | | ... | ${traffic_directions}=${2} | | | | ${min_rate} = | Set Variable | ${10000} | | ${average} | ${stdev} = | Perform soak search | ${frame_size} | | ... | ${traffic_profile} | ${min_rate} | ${max_rate} | | ... | ${packet_loss_ratio} | timeout=${timeout} | | ... | traffic_directions=${traffic_directions} | | ${lower} | ${upper} = | Display result of soak search | | ... | ${average} | ${stdev} | | Should Not Be True | ${lower} < ${min_rate} | | ... | Lower bound ${lower} is below unidirectional minimum ${min_rate}. | Display single bound | | [Documentation] | | ... | Display one bound of NDR+PDR search, | | ... | in packet per seconds (total and per stream) | | ... | and Gbps total bandwidth (for initial packet size). | | ... | Througput is calculated as: | | ... | Sum of measured rates over streams | | ... | Bandwidth is calculated as: | | ... | (Throughput * (L2 Frame Size + IPG) * 8) | | ... | The given result should contain latency data as well. | | | | ... | *Arguments:* | | ... | - text - Flavor text describing which bound is this. Type: string | | ... | - rate_total - Total (not per stream) measured Tr [pps]. Type: float | | ... | - frame_size - L2 Frame Size [B]. Type: integer | | ... | - latency - Latency data to display if non-empty. Type: string | | | | ... | *Example:* | | | | ... | \| Display single bound \| NDR lower bound \| \${12345.67} \ | | ... | \| \${64} \| show_latency=\${EMPTY} \| | | | | [Arguments] | ${text} | ${rate_total} | ${frame_size} | ${latency}=${EMPTY} | | | | ${bandwidth_total} = | Evaluate | ${rate_total} * (${frame_size}+20)*8 / 1e9 | | Set Test Message | ${\n}${text}: ${rate_total} pps, | append=yes | | Set Test Message | ${bandwidth_total} Gbps (initial) | append=yes | | Return From Keyword If | not """${latency}""" | | Set Test Message | ${\n}LATENCY [min/avg/max/hdrh] per stream: ${latency} | | ... | append=yes | Display Reconfig Test Message | | [Documentation] | | ... | Display the number of packets lost (bidirectionally) | | ... | due to reconfiguration under traffic. | | | | ... | *Arguments:* | | ... | - result - Result of bidirectional measurtement. | | ... | Type: ReceiveRateMeasurement | | | | ... | *Example:* | | | | ... | \| Display Reconfig Test Message \| \${result} \| | | | | [Arguments] | ${result} | | | | Set Test Message | Packets lost due to reconfig: ${result.loss_count} | | ${time_lost} = | Evaluate | ${result.loss_count} / ${result.target_tr} | | Set Test Message | ${\n}Implied time lost: ${time_lost} | append=yes | Display result of NDRPDR search | | [Documentation] | | ... | Display result of NDR+PDR search, both quantities, both bounds, | | ... | aggregate in packet per seconds | | ... | and Gbps total bandwidth (for initial packet size). | | ... | Througput is calculated as: | | ... | Sum of measured rate over streams | | ... | Bandwidth is calculated as: | | ... | (Throughput * (L2 Frame Size + IPG) * 8) | | ... | The given result should contain latency data as well. | | | | ... | *Test (or broader scope) variables read:* | | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str | | ... | *Arguments:* | | ... | - result - Measured result data per stream [pps]. Type: NdrPdrResult | | | | ... | *Example:* | | | | ... | \| Display result of NDRPDR search \| \${result} \| | | | | [Arguments] | ${result} | | | | ${frame_size} = | Get Average Frame Size | ${frame_size} | | Display single bound | NDR_LOWER | | ... | ${result.ndr_interval.measured_low.target_tr} | ${frame_size} | | ... | ${result.ndr_interval.measured_low.latency} | | Display single bound | NDR_UPPER | | ... | ${result.ndr_interval.measured_high.target_tr} | ${frame_size} | | Display single bound | PDR_LOWER | | ... | ${result.pdr_interval.measured_low.target_tr} | ${frame_size} | | ... | ${result.pdr_interval.measured_low.latency} | | Display single bound | PDR_UPPER | | ... | ${result.pdr_interval.measured_high.target_tr} | ${frame_size} | Display result of soak search | | [Documentation] | | ... | Display result of soak search, avg+-stdev, as upper/lower bounds, | | ... | in aggregate packets per seconds | | ... | and Gbps total bandwidth (for initial packet size). | | ... | Througput is calculated as: | | ... | Sum of measured rates over streams | | ... | Bandwidth is calculated as: | | ... | (Throughput * (L2 Frame Size + IPG) * 8) | | | | ... | *Test (or broader scope) variables read:* | | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str | | ... | *Arguments:* | | ... | - avg - Estimated average critical load [pps]. Type: float | | ... | - stdev - Standard deviation of critical load [pps]. Type: float | | | | ... | *Returns:* | | ... | - Lower and upper bound of critical load [pps]. Type: 2-tuple of float | | | | ... | *Example:* | | | | ... | \| Display result of soak search \| \${100000} \| \${100} \| | | | | [Arguments] | ${avg} | ${stdev} | | | | ${frame_size} = | Get Average Frame Size | ${frame_size} | | ${avg} = | Convert To Number | ${avg} | | ${stdev} = | Convert To Number | ${stdev} | | ${lower} = | Evaluate | ${avg} - ${stdev} | | ${upper} = | Evaluate | ${avg} + ${stdev} | | Display single bound | PLRsearch lower bound | ${lower} | ${frame_size} | | Display single bound | PLRsearch upper bound | ${upper} | ${frame_size} | | Return From Keyword | ${lower} | ${upper} | Check NDRPDR interval validity | | [Documentation] | | ... | Extract loss ratio of lower bound of the interval. | | ... | Fail if it does not reach the allowed value. | | | | ... | *Arguments:* | | ... | - interval - Measured interval. Type: ReceiveRateInterval | | ... | - packet_loss_ratio - Accepted loss (0.0 for NDR). Type: float | | | | ... | *Example:* | | | | ... | \| Check NDRPDR interval validity \| \${result.pdr_interval} \ | | ... | \| \${0.005} \| | | | | [Arguments] | ${interval} | ${packet_loss_ratio}=${0.0} | | | | ${lower_bound} = | Set Variable | ${interval.measured_low} | | ${lower_bound_lf} = | Set Variable | ${lower_bound.loss_fraction} | | Return From Keyword If | ${lower_bound_lf} <= ${packet_loss_ratio} | | ${message}= | Catenate | SEPARATOR=${SPACE} | | ... | Minimal rate loss fraction ${lower_bound_lf} | | ... | does not reach target ${packet_loss_ratio}. | | ${message_zero} = | Set Variable | Zero packets forwarded! | | ${message_other} = | Set Variable | ${lower_bound.loss_count} packets lost. | | ${message} = | Set Variable If | ${lower_bound_lf} >= 1.0 | | ... | ${message}${\n}${message_zero} | ${message}${\n}${message_other} | | Fail | ${message} | Traffic should pass with maximum rate | | [Documentation] | | ... | Send traffic at maximum rate. | | | | ... | *Test (or broader scope) variables read:* | | ... | - traffic_profile - Name of module defining traffc for measurements. | | ... | Type: string | | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str | | ... | - max_rate - Calculated unidirectional maximal transmit rate [pps]. | | ... | Type: float | | | | ... | *Arguments:* | | ... | - subsamples - How many trials in this measurement. Type: int | | ... | - trial_duration - Duration of single trial [s]. Type: float | | ... | - fail_no_traffic - Whether to fail on zero receive count. Type: boolean | | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic. | | ... | Type: int | | ... | - tx_port - TX port of TG, default 0. Type: integer | | ... | - rx_port - RX port of TG, default 1. Type: integer | | | | ... | *Example:* | | | | ... | \| Traffic should pass with maximum rate \| \${1} \| \${10.0} \ | | ... | \| \${False} \| \${2} \| \${0} \| \${1} \| | | | | [Arguments] | ${trial_duration}=${PERF_TRIAL_DURATION} | | ... | ${fail_no_traffic}=${True} | ${subsamples}=${PERF_TRIAL_MULTIPLICITY} | | ... | ${traffic_directions}=${2} | ${tx_port}=${0} | ${rx_port}=${1} | | | | ${results} | ${approximated_results} = | Send traffic at specified rate | | ... | ${trial_duration} | | ... | ${max_rate}pps | ${frame_size} | ${traffic_profile} | ${subsamples} | | ... | ${traffic_directions} | ${tx_port} | ${rx_port} | | Set Test Message | ${\n}Maximum Receive Rate trial results | | Set Test Message | in packets per second: ${results} | | ... | append=yes | | Run Keyword If | ${fail_no_traffic} | Fail if no traffic forwarded | Send traffic at specified rate | | [Documentation] | | ... | Perform a warmup, show runtime counters during it. | | ... | Then send traffic at specified rate, possibly multiple trials. | | ... | Show various DUT stats, optionally also packet trace. | | ... | Return list of measured receive rates. | | ... | The rate argument should be TRex friendly, so it should include "pps". | | | | ... | *Arguments:* | | ... | - trial_duration - Duration of single trial [s]. Type: float | | ... | - rate - Rate for sending packets. Type: string | | ... | - frame_size - L2 Frame Size [B]. Type: integer/string | | ... | - traffic_profile - Name of module defining traffc for measurements. | | ... | Type: string | | ... | - subsamples - How many trials in this measurement. Type: int | | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic. | | ... | Type: int | | ... | - tx_port - TX port of TG, default 0. Type: integer | | ... | - rx_port - RX port of TG, default 1. Type: integer | | ... | - pkt_trace - True to enable packet trace. Type: boolean | | | | ... | *Example:* | | | | ... | \| Send traffic at specified rate \| \${1.0} \| 4.0mpps \| \${64} \ | | ... | \| 3-node-IPv4 \| \${10} \| \${2} \| \${0} \| \${1} \| \${False} \| | | | | [Arguments] | ${trial_duration} | ${rate} | ${frame_size} | | ... | ${traffic_profile} | ${subsamples}=${1} | ${traffic_directions}=${2} | | ... | ${tx_port}=${0} | ${rx_port}=${1} | ${pkt_trace}=${False} | | | | Clear and show runtime counters with running traffic | ${trial_duration} | | ... | ${rate} | ${frame_size} | ${traffic_profile} | | ... | ${traffic_directions} | ${tx_port} | ${rx_port} | | Run Keyword If | ${dut_stats}==${True} | | ... | Clear statistics on all DUTs | ${nodes} | | Run Keyword If | ${dut_stats}==${True} and ${pkt_trace}==${True} | | ... | VPP Enable Traces On All DUTs | ${nodes} | fail_on_error=${False} | | Run Keyword If | ${dut_stats}==${True} | | ... | VPP enable elog traces on all DUTs | ${nodes} | | ${results} = | Create List | | ${approximated_results} = | Create List | | FOR | ${i} | IN RANGE | ${subsamples} | | | # The following line is skipping some default arguments, | | | # that is why subsequent arguments have to be named. | | | Send traffic on tg | ${trial_duration} | ${rate} | ${frame_size} | | | ... | ${traffic_profile} | warmup_time=${0} | | | ... | traffic_directions=${traffic_directions} | tx_port=${tx_port} | | | ... | rx_port=${rx_port} | | | ${rx} = | Get Received | | | ${ar} = | Get Approximated Rate | | | ${rr} = | Evaluate | ${rx} / ${trial_duration} | | | Append To List | ${results} | ${rr} | | | Append To List | ${approximated_results} | ${ar} | | END | | Run Keyword If | ${dut_stats}==${True} | Show event logger on all DUTs | | ... | ${nodes} | | Run Keyword If | ${dut_stats}==${True} | Show statistics on all DUTs | | ... | ${nodes} | | Run Keyword If | ${dut_stats}==${True} and ${pkt_trace}==${True} | | ... | Show Packet Trace On All Duts | ${nodes} | maximum=${100} | | Return From Keyword | ${results} | ${approximated_results} | Measure and show latency at specified rate | | [Documentation] | | ... | Send traffic at specified rate, single trial. | | ... | Extract latency information and append it to text message. | | ... | The rate argument should be TRex friendly, so it should include "pps". | | | | ... | *Arguments:* | | ... | - message_prefix - Preface to test message addition. Type: string | | ... | - trial_duration - Duration of single trial [s]. Type: float | | ... | - rate - Rate for sending packets. Type: string | | ... | - frame_size - L2 Frame Size [B]. Type: integer/string | | ... | - traffic_profile - Name of module defining traffic for measurements. | | ... | Type: string | | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic. | | ... | Type: int | | ... | - tx_port - TX port of TG, default 0. Type: integer | | ... | - rx_port - RX port of TG, default 1. Type: integer | | | | ... | *Example:* | | | | ... | \| Measure and show latency at specified rate \| Latency at 90% NDR \ | | ... | \| \${1.0} \| 4.0mpps \| \${64} \| 3-node-IPv4 \| \${2} \| | | | | [Arguments] | ${message_prefix} | ${trial_duration} | ${rate} | | ... | ${frame_size} | ${traffic_profile} | ${traffic_directions}=${2} | | ... | ${tx_port}=${0} | ${rx_port}=${1} | | | | # The following line is skipping some default arguments, | | # that is why subsequent arguments have to be named. | | Send traffic on tg | ${trial_duration} | ${rate} | ${frame_size} | | ... | ${traffic_profile} | warmup_time=${0} | | ... | traffic_directions=${traffic_directions} | tx_port=${tx_port} | | ... | rx_port=${rx_port} | | ${latency} = | Get Latency Int | | Set Test Message | ${\n}${message_prefix} ${latency} | append=${True} | Clear and show runtime counters with running traffic | | [Documentation] | | ... | Start traffic at specified rate then clear runtime counters on all | | ... | DUTs. Wait for specified amount of time and capture runtime counters | | ... | on all DUTs. Finally stop traffic | | | | ... | *Arguments:* | | ... | - duration - Duration of traffic run [s]. Type: integer | | ... | - rate - Unidirectional rate for sending packets. Type: string | | ... | - frame_size - L2 Frame Size [B] or IMIX_v4_1. Type: integer/string | | ... | - traffic_profile - Name of module defining traffc for measurements. | | ... | Type: string | | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic. | | ... | Type: int | | ... | - tx_port - TX port of TG, default 0. Type: integer | | ... | - rx_port - RX port of TG, default 1. Type: integer | | | | ... | *Example:* | | | | ... | \| Clear and show runtime counters with running traffic \| \${10} \ | | ... | \| 4.0mpps \| \${64} \| 3-node-IPv4 \| \${2} \| \${0} \| \${1} \| | | | | [Arguments] | ${duration} | ${rate} | ${frame_size} | ${traffic_profile} | | ... | ${traffic_directions}=${2} | ${tx_port}=${0} | ${rx_port}=${1} | | | | # Duration of -1 means we will stop traffic manually. | | Send traffic on tg | ${-1} | ${rate} | ${frame_size} | ${traffic_profile} | | ... | warmup_time=${0} | async_call=${True} | latency=${False} | | ... | traffic_directions=${traffic_directions} | tx_port=${tx_port} | | ... | rx_port=${rx_port} | | Run Keyword If | ${dut_stats}==${True} | | ... | VPP clear runtime on all DUTs | ${nodes} | | Sleep | ${duration} | | Run Keyword If | ${dut_stats}==${True} | | ... | VPP show runtime on all DUTs | ${nodes} | | Stop traffic on tg | Start Traffic on Background | | [Documentation] | | ... | Start traffic at specified rate then return control to Robot. | | ... | This keyword is useful if the test needs to do something | | ... | while traffic is running. | | | | ... | *Test (or broader scope) variables read:* | | ... | - traffic_profile - Name of module defining traffc for measurements. | | ... | Type: string | | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str | | ... | *Arguments:* | | ... | - rate - Unidirectional rate for sending packets. Type: string | | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic. | | ... | Type: int | | ... | - tx_port - TX port of TG, default 0. Type: integer | | ... | - rx_port - RX port of TG, default 1. Type: integer | | | | ... | *Example:* | | | | ... | \| Start Traffic on Background \| 4.0mpps \| \${2} \| \${0} \ | | ... | \| \${1} \| | | | | [Arguments] | ${rate} | ${traffic_directions}=${2} | ${tx_port}=${0} | | ... | ${rx_port}=${1} | | | | # Duration of -1 means we will stop traffic manually. | | Send traffic on tg | ${-1} | ${rate} | ${frame_size} | ${traffic_profile} | | ... | warmup_time=${0} | async_call=${True} | latency=${False} | | ... | traffic_directions=${traffic_directions} | tx_port=${tx_port} | | ... | rx_port=${rx_port} | Stop Running Traffic | | [Documentation] | | ... | Stop the running traffic, return measurement result. | | ... | For bidirectional traffic, the reported values are bi-directional. | | | | ... | *Returns:* | | ... | - Measurement result. Type: ReceiveRateMeasurement | | | | ... | *Example:* | | | | ... | \${result}= \| Stop Running Traffic \| | | | | ${result}= | Stop traffic on tg | | Return From Keyword | ${result}