X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Frobot%2Fperformance%2Fperformance_utils.robot;h=f14d7bd13c36916403e06f538315bdd54d23300a;hp=eac7fe0075d423b2be500fca0fe4b597a34b2d6d;hb=38ba3408ef77161b61cd4be702d0c6e8fc36f8e5;hpb=d68951ac245150eeefa6e0f4156e4c1b5c9e9325

diff --git a/resources/libraries/robot/performance/performance_utils.robot b/resources/libraries/robot/performance/performance_utils.robot
index eac7fe0075..f14d7bd13c 100644
--- a/resources/libraries/robot/performance/performance_utils.robot
+++ b/resources/libraries/robot/performance/performance_utils.robot
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# 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:
@@ -15,10 +15,8 @@
 | Library | Collections
 | Library | resources.libraries.python.topology.Topology
 | Library | resources.libraries.python.NodePath
-| Library | resources.libraries.python.DpdkUtil
+| Library | resources.libraries.python.PerfUtil
 | Library | resources.libraries.python.InterfaceUtil
-| Library | resources.libraries.python.KubernetesUtils
-| Library | resources.libraries.python.VhostUser
 | Library | resources.libraries.python.TrafficGenerator
 | Library | resources.libraries.python.TrafficGenerator.OptimizedSearch
 | Library | resources.libraries.python.TrafficGenerator.TGDropRateSearchImpl
@@ -28,6 +26,11 @@
 | Documentation
 | ... | Performance suite keywords - utilities to find and verify NDR and PDR.
 
+*** Variables ***
+| ${trial_duration}= | ${PERF_TRIAL_DURATION}
+| ${trial_multiplicity}= | ${PERF_TRIAL_MULTIPLICITY}
+| ${extended_debug}= | ${EXTENDED_DEBUG}
+
 *** Keywords ***
 | Find NDR and PDR intervals using optimized search
 | | [Documentation]
@@ -37,12 +40,12 @@
 | | ... | Fail if a resulting lower bound has too high loss fraction.
 | | ... | Input rates are understood as uni-directional,
 | | ... | reported result contains aggregate rates.
-| | ... | Currently, the min_rate value is hardcoded to match test teardowns.
-| |
-| | ... | TODO: Should the trial duration of the additional
-| | ... | measurements be configurable?
-| |
-| | ... | Some inputs are read from variables to streamline suites.
+| | ... | 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.
@@ -61,21 +64,24 @@
 | | ... | - 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} \|
+| | ... | \| \${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}
 | |
+| | # Latency measurements will need more than 9000 pps.
 | | ${result} = | Perform optimized ndrpdr search | ${frame_size}
-| | ... | ${traffic_profile} | ${10000} | ${max_rate}
+| | ... | ${traffic_profile} | ${9001} | ${max_rate}
 | | ... | ${packet_loss_ratio} | ${final_relative_width}
 | | ... | ${final_trial_duration} | ${initial_trial_duration}
 | | ... | ${number_of_intermediate_phases} | timeout=${timeout}
@@ -84,27 +90,33 @@
 | | Check NDRPDR interval validity | ${result.pdr_interval}
 | | ... | ${packet_loss_ratio}
 | | Check NDRPDR interval validity | ${result.ndr_interval}
-| | Perform additional measurements based on NDRPDR result
-| | ... | ${result} | ${frame_size} | ${traffic_profile}
-
-| 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
+| | ${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} | ${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} | ${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} | ${framesize}
+| | ... | ${traffic_profile} | ${traffic_directions}
+| | Measure and show latency at specified rate | Latency at 0% PDR:
+| | ... | ${latency_duration} | ${0} | ${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} | ${framesize} | ${traffic_profile}
+| | ... | traffic_directions=${traffic_directions}
+| | Send traffic at specified rate
+| | ... | ${1.0} | ${ndr_per_stream} | ${framesize} | ${traffic_profile}
+| | ... | traffic_directions=${traffic_directions}
 
 | Find Throughput Using MLRsearch
 | | [Documentation]
@@ -113,11 +125,6 @@
 | | ... | Input rates are understood as uni-directional.
 | | ... | Currently, the min_rate value is hardcoded to match test teardowns.
 | |
-| | ... | TODO: Should the trial duration of the additional
-| | ... | measurements be configurable?
-| |
-| | ... | Some inputs are read from variables to streamline suites.
-| |
 | | ... | *Test (or broader scope) variables read:*
 | | ... | - traffic_profile - Name of module defining traffc for measurements.
 | | ... | Type: string
@@ -157,18 +164,19 @@
 | | ... | ${final_trial_duration} | ${initial_trial_duration}
 | | ... | ${number_of_intermediate_phases} | timeout=${timeout}
 | | ... | doublings=${doublings} | traffic_directions=${traffic_directions}
-| | Return From Keyword | ${result.pdr_interval.measured_low.transmit_rate}
+| | 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.
+| | ... | Fail if computed lower bound 110% of the minimal rate or less.
 | | ... | Input rates are understood as uni-directional,
 | | ... | reported result contains aggregate rates.
 | | ... | Currently, the min_rate value is hardcoded to match test teardowns.
-| | ... | Some inputs are read from variables to streamline suites.
 | |
 | | ... | *Test (or broader scope) variables read:*
 | | ... | - traffic_profile - Name of module defining traffc for measurements.
@@ -198,8 +206,8 @@
 | | ... | 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}.
+| | Should Not Be True | 1.1 * ${traffic_directions} * ${min_rate} > ${lower}
+| | ... | Lower bound ${lower} too small for unidirectional minimum ${min_rate}.
 
 | Display single bound
 | | [Documentation]
@@ -232,6 +240,25 @@
 | | 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,
@@ -256,15 +283,15 @@
 | |
 | | ${frame_size} = | Get Average Frame Size | ${frame_size}
 | | Display single bound | NDR_LOWER
-| | ... | ${result.ndr_interval.measured_low.transmit_rate} | ${frame_size}
+| | ... | ${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.transmit_rate} | ${frame_size}
+| | ... | ${result.ndr_interval.measured_high.target_tr} | ${frame_size}
 | | Display single bound | PDR_LOWER
-| | ... | ${result.pdr_interval.measured_low.transmit_rate} | ${frame_size}
+| | ... | ${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.transmit_rate} | ${frame_size}
+| | ... | ${result.pdr_interval.measured_high.target_tr} | ${frame_size}
 
 | Display result of soak search
 | | [Documentation]
@@ -275,8 +302,6 @@
 | | ... | Sum of measured rates over streams
 | | ... | Bandwidth is calculated as:
 | | ... | (Throughput * (L2 Frame Size + IPG) * 8)
-| | ... | TODO: Do we want to report some latency data,
-| | ... | even if not measured at the reported bounds?.
 | |
 | | ... | *Test (or broader scope) variables read:*
 | | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str
@@ -330,69 +355,10 @@
 | | ... | ${message}${\n}${message_zero} | ${message}${\n}${message_other}
 | | Fail | ${message}
 
-| Perform additional measurements based on NDRPDR result
-| | [Documentation]
-| | ... | Perform any additional measurements which are not directly needed
-| | ... | for determining NDR nor PDR, but which are needed for gathering
-| | ... | additional data for debug purposes.
-| | ... | Currently, just "Traffic should pass with no loss" is called.
-| | ... | TODO: Move latency measurements from optimized search here.
-| |
-| | ... | *Arguments:*
-| | ... | - result - Measured result data per stream [pps]. Type: NdrPdrResult
-| | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str
-| | ... | - traffic_profile - Topology profile. Type: string
-| | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic.
-| | ... | Type: int
-| |
-| | ... | *Example:*
-| | ... | \| Perform additional measurements based on NDRPDR result \
-| | ... | \| \${result} \| \${64} \| 3-node-IPv4 \| \${2} \|
-| |
-| | [Arguments] | ${result} | ${framesize} | ${traffic_profile}
-| | ... | ${traffic_directions}=${2}
-| |
-| | ${duration}= | Set Variable | ${2.0}
-| | ${rate_sum}= | Set Variable | ${result.ndr_interval.measured_low.target_tr}
-| | ${rate_per_stream}= | Evaluate | ${rate_sum} / float(${traffic_directions})
-| | Traffic should pass with no loss | ${duration} | ${rate_per_stream}pps
-| | ... | ${framesize} | ${traffic_profile} | fail_on_loss=${False}
-| | ... | traffic_directions=${traffic_directions}
-
-| Traffic should pass with no loss
-| | [Documentation]
-| | ... | Send traffic at specified rate. No packet loss is accepted at loss
-| | ... | evaluation.
-| |
-| | ... | *Arguments:*
-| | ... | - duration - Duration of traffic run [s]. Type: integer
-| | ... | - rate - 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
-| | ... | - fail_on_loss - If True, the keyword fails if loss occurred.
-| | ... | Type: boolean
-| | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic.
-| | ... | Type: int
-| |
-| | ... | *Example:*
-| |
-| | ... | \| Traffic should pass with no loss \| \${10} \| 4.0mpps \| \${64} \
-| | ... | \| 3-node-IPv4 \| \${2} \|
-| |
-| | [Arguments] | ${duration} | ${rate} | ${frame_size} | ${traffic_profile}
-| | ... | ${fail_on_loss}=${True} | ${traffic_directions}=${2}
-| |
-| | Send traffic at specified rate | ${duration} | ${rate} | ${frame_size}
-| | ... | ${traffic_profile} | traffic_directions=${traffic_directions}
-| | Run Keyword If | ${fail_on_loss} | No traffic loss occurred
-
 | Traffic should pass with maximum rate
 | | [Documentation]
 | | ... | Send traffic at maximum rate.
 | |
-| | ... | Some inputs are read from variables to streamline suites.
-| |
 | | ... | *Test (or broader scope) variables read:*
 | | ... | - traffic_profile - Name of module defining traffc for measurements.
 | | ... | Type: string
@@ -401,90 +367,142 @@
 | | ... | 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
+| | ... | - trial_duration - Duration of single trial [s].
+| | ... | Type: float
+| | ... | - fail_no_traffic - Whether to fail on zero receive count.
+| | ... | Type: boolean
+| | ... | - trial_multiplicity - 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
+| | ... | - 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}
+| | [Arguments] | ${trial_duration}=${trial_duration}
+| | ... | ${fail_no_traffic}=${True}
+| | ... | ${trial_multiplicity}=${trial_multiplicity}
 | | ... | ${traffic_directions}=${2} | ${tx_port}=${0} | ${rx_port}=${1}
+| | ... | ${latency}=${True}
 | |
-| | ${results} = | Send traffic at specified rate | ${trial_duration}
-| | ... | ${max_rate}pps | ${frame_size} | ${traffic_profile} | ${subsamples}
-| | ... | ${traffic_directions} | ${tx_port} | ${rx_port}
+| | ${results}= | Send traffic at specified rate
+| | ... | ${trial_duration} | ${max_rate} | ${frame_size}
+| | ... | ${traffic_profile} | ${trial_multiplicity}
+| | ... | ${traffic_directions} | ${tx_port} | ${rx_port} | latency=${latency}
 | | Set Test Message | ${\n}Maximum Receive Rate trial results
 | | Set Test Message | in packets per second: ${results}
 | | ... | append=yes
-| | # TODO: Should we also report the percentage relative to transmit rate,
-| | # so that people looking at console can decide how close to 100% it is?
 | | Run Keyword If | ${fail_no_traffic} | Fail if no traffic forwarded
 
 | Send traffic at specified rate
 | | [Documentation]
-| | ... | Send traffic at specified rate.
+| | ... | 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
+| | ... | - rate - Target aggregate transmit rate [pps] / Connections per second
+| | ... | (CPS) for UDP/TCP flows. Type: float
 | | ... | - 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
+| | ... | - trial_multiplicity - 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
+| | ... | - tx_port - TX port of TG, default 0.
+| | ... | Type: integer
+| | ... | - rx_port - RX port of TG, default 1.
+| | ... | Type: integer
+| | ... | - extended_debug- True to enable extended debug.
+| | ... | Type: boolean
 | |
 | | ... | *Example:*
 | |
-| | ... | \| Send traffic at specified rate \| \${1.0} \| 4.0mpps \| \${64} \
-| | ... | \| 3-node-IPv4 \| \${10} \| \${2} \| \${0} | \${1} \| \${False}
+| | ... | \| Send traffic at specified rate \| \${1.0} \| ${4000000.0} \
+| | ... | \| \${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}
+| | ... | ${traffic_profile} | ${trial_multiplicity}=${trial_multiplicity}
+| | ... | ${traffic_directions}=${2} | ${tx_port}=${0} | ${rx_port}=${1}
+| | ... | ${extended_debug}=${extended_debug} | ${latency}=${True}
 | |
+| | Set Test Variable | ${extended_debug}
 | | 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}
+| | FOR | ${action} | IN | @{pre_stats}
+| | | Run Keyword | Additional Statistics Action For ${action}
+| | END
 | | ${results} = | Create List
-| | FOR | ${i} | IN RANGE | ${subsamples}
+| | FOR | ${i} | IN RANGE | ${trial_multiplicity}
 | | | # 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=${rx_port}
+| | | ... | rx_port=${rx_port} | latency=${latency}
 | | | ${rx} = | Get Received
 | | | ${rr} = | Evaluate | ${rx} / ${trial_duration}
 | | | Append To List | ${results} | ${rr}
 | | 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}
+| | FOR | ${action} | IN | @{post_stats}
+| | | Run Keyword | Additional Statistics Action For ${action}
+| | END
 | | Return From Keyword | ${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 is int, so should not include "pps".
+| | ... | If the given rate is too low, a safe value is used instead.
+| |
+| | ... | *Arguments:*
+| | ... | - message_prefix - Preface to test message addition. Type: string
+| | ... | - trial_duration - Duration of single trial [s]. Type: float
+| | ... | - rate - Rate [pps] for sending packets in case of T-Rex stateless
+| | ... | mode or multiplier of profile CPS in case of T-Rex astf mode.
+| | ... | Type: float
+| | ... | - 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
+| | ... | - safe_rate - To apply if rate is below this, as latency pps is fixed.
+| | ... | In pps, type int.
+| |
+| | ... | *Example:*
+| |
+| | ... | \| Measure and show latency at specified rate \| Latency at 90% NDR \
+| | ... | \| \${1.0} \| ${10000000} \| \${64} \| 3-node-IPv4 \| \${2} \
+| | ... | \| \${0} \| \${1} \| ${9500} \|
+| |
+| | [Arguments] | ${message_prefix} | ${trial_duration} | ${rate}
+| | ... | ${frame_size} | ${traffic_profile} | ${traffic_directions}=${2}
+| | ... | ${tx_port}=${0} | ${rx_port}=${1} | ${safe_rate}=${9001}
+| |
+| | ${real_rate} = | Evaluate | max(${rate}, ${safe_rate})
+| | # The following line is skipping some default arguments,
+| | # that is why subsequent arguments have to be named.
+| | Send traffic on tg | ${trial_duration} | ${real_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
@@ -493,7 +511,9 @@
 | |
 | | ... | *Arguments:*
 | | ... | - duration - Duration of traffic run [s]. Type: integer
-| | ... | - rate - Unidirectional rate for sending packets. Type: string
+| | ... | - rate - Rate [pps] for sending packets in case of T-Rex stateless
+| | ... | mode or multiplier of profile CPS in case of T-Rex astf mode.
+| | ... | Type: float
 | | ... | - frame_size - L2 Frame Size [B] or IMIX_v4_1. Type: integer/string
 | | ... | - traffic_profile - Name of module defining traffc for measurements.
 | | ... | Type: string
@@ -505,7 +525,7 @@
 | | ... | *Example:*
 | |
 | | ... | \| Clear and show runtime counters with running traffic \| \${10} \
-| | ... | \| 4.0mpps \| \${64} \| 3-node-IPv4 \| \${2} \| \${0} \| \${1} \|
+| | ... | \| ${4000000.0} \| \${64} \| 3-node-IPv4 \| \${2} \| \${0} \| \${1} \|
 | |
 | | [Arguments] | ${duration} | ${rate} | ${frame_size} | ${traffic_profile}
 | | ... | ${traffic_directions}=${2} | ${tx_port}=${0} | ${rx_port}=${1}
@@ -515,29 +535,29 @@
 | | ... | 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 counters on all DUTs | ${nodes}
+| | FOR | ${action} | IN | @{pre_run_stats}
+| | | Run Keyword | Additional Statistics Action For ${action}
+| | END
 | | Sleep | ${duration}
-| | Run Keyword If | ${dut_stats}==${True}
-| | ... | VPP show runtime counters on all DUTs | ${nodes}
+| | FOR | ${action} | IN | @{post_run_stats}
+| | | Run Keyword | Additional Statistics Action For ${action}
+| | END
 | | 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.
-| | ... | Just a wrapper around L1 keyword.
-| | ... |
-| | ... | TODO: How to make sure the traffic is stopped on any failure?
 | |
 | | ... | *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
+| | ... | - rate - Rate [pps] for sending packets in case of T-Rex stateless
+| | ... | mode or multiplier of profile CPS in case of T-Rex astf mode.
+| | ... | Type: float
 | | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic.
 | | ... | Type: int
 | | ... | - tx_port - TX port of TG, default 0. Type: integer
@@ -545,7 +565,7 @@
 | |
 | | ... | *Example:*
 | |
-| | ... | \| Start Traffic on Background \| 4.0mpps \| \${2} \| \${0} \
+| | ... | \| Start Traffic on Background \| ${4000000.0} \| \${2} \| \${0} \
 | | ... | \| \${1} \|
 | |
 | | [Arguments] | ${rate} | ${traffic_directions}=${2} | ${tx_port}=${0}
@@ -562,10 +582,6 @@
 | | ... | Stop the running traffic, return measurement result.
 | | ... | For bidirectional traffic, the reported values are bi-directional.
 | |
-| | ... | Just a wrapper around L1 keyword.
-| | ... |
-| | ... | TODO: Tolerate if traffic was not started.
-| |
 | | ... | *Returns:*
 | | ... | - Measurement result. Type: ReceiveRateMeasurement
 | |
@@ -575,3 +591,60 @@
 | |
 | | ${result}= | Stop traffic on tg
 | | Return From Keyword | ${result}
+
+| Additional Statistics Action For vpp-clear-stats
+| | [Documentation]
+| | ... | Additional Statistics Action for clear VPP statistics.
+| |
+| | Clear Statistics On All DUTs | ${nodes}
+
+| Additional Statistics Action For vpp-show-stats
+| | [Documentation]
+| | ... | Additional Statistics Action for show VPP statistics.
+| |
+| | Show Statistics On All DUTs | ${nodes}
+
+| Additional Statistics Action For vpp-clear-runtime
+| | [Documentation]
+| | ... | Additional Statistics Action for clear VPP runtime.
+| |
+| | VPP Clear Runtime On All DUTs | ${nodes}
+
+| Additional Statistics Action For vpp-show-runtime
+| | [Documentation]
+| | ... | Additional Statistics Action for show VPP runtime.
+| |
+| | VPP Show Runtime On All DUTs | ${nodes}
+
+| Additional Statistics Action For vpp-enable-packettrace
+| | [Documentation]
+| | ... | Additional Statistics Action for enable VPP packet trace.
+| |
+| | Run Keyword If | ${extended_debug}==${True}
+| | ... | VPP Enable Traces On All DUTs | ${nodes} | fail_on_error=${False}
+
+| Additional Statistics Action For vpp-show-packettrace
+| | [Documentation]
+| | ... | Additional Statistics Action for show VPP packet trace.
+| |
+| | Run Keyword If | ${extended_debug}==${True}
+| | ... | Show Packet Trace On All Duts | ${nodes} | maximum=${100}
+
+| Additional Statistics Action For vpp-enable-elog
+| | [Documentation]
+| | ... | Additional Statistics Action for enable VPP elog trace.
+| |
+| | VPP Enable Elog Traces On All DUTs | ${nodes}
+
+| Additional Statistics Action For vpp-show-elog
+| | [Documentation]
+| | ... | Additional Statistics Action for show VPP elog trace.
+| |
+| | Show Event Logger On All DUTs | ${nodes}
+
+| Additional Statistics Action For bash-perf-stat
+| | [Documentation]
+| | ... | Additional Statistics Action for bash command "perf stat".
+| |
+| | Run Keyword If | ${extended_debug}==${True}
+| | ... | Perf Stat On All DUTs | ${nodes}
\ No newline at end of file