aboutsummaryrefslogtreecommitdiffstats
path: root/resources/libraries/robot/performance/performance_utils.robot
blob: 1eb6710effc1b111d1874ad60dfc3fad8cc14619 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
# Copyright (c) 2022 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.model.ExportResult
| Library | resources.libraries.python.topology.Topology
| Library | resources.libraries.python.NodePath
| Library | resources.libraries.python.InterfaceUtil
| Library | resources.libraries.python.Iperf3
| Library | resources.libraries.python.TelemetryUtil
| 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
| Resource | resources/libraries/robot/performance/performance_actions.robot
| Resource | resources/libraries/robot/performance/performance_display.robot
| Resource | resources/libraries/robot/performance/performance_vars.robot
|
| Documentation
| ... | Performance suite keywords - utilities to find and verify NDR and PDR.
| ... | See performance_vars.robot for values accessed via there.

*** Variables ***
| # Variable holding multiplicator of main heap size. By default it is set to 1
| # that means the main heap size will be set to 2G. Some tests may require more
| # memory for IP FIB (e.g. nat44det tests with 4M or 16M sessions).
| ${heap_size_mult}= | ${1}

*** Keywords ***
| Find critical load using PLRsearch
| | [Documentation]
| | ... | Find boundaries for troughput (of hardcoded target loss ratio)
| | ... | using PLRsearch algorithm.
| | ... | Display results as formatted test message.
| | ... | 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 aggregated pps rates, depending on test.
| | ... | Call \${resetter} (if defined) to reset DUT state before each trial.
| |
| | ... | *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: integer or
| | ... | string
| | ... | - max_rate - Calculated unidirectional maximal transmit rate [pps].
| | ... | Type: float
| |
| | ... | *Example:*
| |
| | ... | \| Find critical load using PLR search \|
| |
| | # Get values via performance_vars.
| | ${max_rate} = | Get Max 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
| | ${transaction_scale} = | Get Transaction Scale
| | ${transaction_type} = | Get Transaction Type
| | ${use_latency} = | Get Use Latency
| | # TRex needs a warmup to avoid unsent packets at half-max rate.
| | Send traffic on tg
| | ... | duration=1.0
| | ... | rate=${max_rate}
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
| | ... | async_call=${False}
| | ... | duration_limit=${1.0}
| | ... | ppta=${ppta}
| | ... | traffic_directions=${traffic_directions}
| | ... | transaction_duration=${transaction_duration}
| | ... | transaction_scale=${transaction_scale}
| | ... | transaction_type=${transaction_type}
| | ... | use_latency=False
| | ... | ramp_up_duration=${0.0}
| | ... | ramp_up_rate=${0.0}
| | # Ready for main search.
| | ${average} | ${stdev} = | Perform soak search
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
| | ... | minimum_transmit_rate=${min_rate_soft}
| | ... | maximum_transmit_rate=${max_rate}
| | ... | plr_target=${1e-7}
| | ... | tdpt=${0.1}
| | ... | initial_count=${50}
| | ... | ppta=${ppta}
| | ... | resetter=${resetter}
| | ... | timeout=${1800.0}
| | ... | trace_enabled=${False}
| | ... | traffic_directions=${traffic_directions}
| | ... | transaction_scale=${transaction_scale}
| | ... | 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}
| | # Stats at the discovered critical rate.
| | Set Test Variable | ${telemetry_oload} | plr
| | Send traffic at specified rate
| | ... | rate=${lower}
| | ... | trial_duration=${1.0}
| | ... | trial_multiplicity=${1}
| | ... | use_latency=${use_latency}
| | ... | duration_limit=${1.0}
| | 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]
| | ... | 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 ratio.
| | ... | Input rates are unidirectional, in transaction per second.
| | ... | Reported result may contain aggregated pps rates, depending on test.
| | ... | Additional latency measurements are performed for smaller loads,
| | ... | even if latency stream is disabled in search. Their results
| | ... | are also displayed.
| | ... | Finally, two measurements for runtime stats are done (not displayed).
| | ... | Call \${resetter} (if defined) to reset DUT state before each trial.
| |
| | ... | *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: integer or
| | ... | string
| | ... | - max_rate - Calculated maximal unidirectional transmit rate [tps].
| | ... | Type: float
| | ... | - resetter - Callable to reset DUT state before each trial.
| | ... | - transaction_scale - Number of ASTF transaction (zero if unlimited).
| | ... | - transaction_type - String identifier to determine how to count
| | ... | transactions. Default is "packet".
| | ... | - disable_latency - If true, skip anything related to latency.
| | ... | Useful if transaction_scale is high and TPS is low. Default: false.
| |
| | ... | *Example:*
| |
| | ... | \| Find NDR and PDR intervals using optimized search \|
| |
| | # Get values via performance_vars.
| | ${disable_latency} = | Get Disable Latency
| | ${max_rate} = | Get Max 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
| | ${transaction_scale} = | Get Transaction Scale
| | ${transaction_type} = | Get Transaction Type
| | ${use_latency} = | Get Use Latency
| | ${result} = | Perform optimized ndrpdr search
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
| | ... | minimum_transmit_rate=${min_rate_soft}
| | ... | maximum_transmit_rate=${max_rate}
| | ... | packet_loss_ratio=${packet_loss_ratio}
| | ... | final_relative_width=${0.005}
| | ... | final_trial_duration=${30.0}
| | ... | initial_trial_duration=${1.0}
| | ... | number_of_intermediate_phases=${2}
| | ... | timeout=${1200.0}
| | ... | ppta=${ppta}
| | ... | resetter=${resetter}
| | ... | traffic_directions=${traffic_directions}
| | ... | transaction_duration=${transaction_duration}
| | ... | transaction_scale=${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[1]}
| | ... | ${packet_loss_ratio}
| | Check NDRPDR interval validity | ${result[0]}
| | ${pdr} = | Set Variable | ${result[1].measured_low.target_tr}
| | ${ndr} = | Set Variable | ${result[0].measured_low.target_tr}
| | # We expect NDR and PDR to have different-looking stats.
| | Set Test Variable | ${telemetry_oload} | pdr
| | Send traffic at specified rate
| | ... | rate=${pdr}
| | ... | trial_duration=${1.0}
| | ... | trial_multiplicity=${1}
| | ... | use_latency=${use_latency}
| | ... | duration_limit=${1.0}
| | Set Test Variable | ${telemetry_oload} | ndr
| | Run Keyword If | ${ndr} != ${pdr}
| | ... | Send traffic at specified rate
| | ... | rate=${ndr}
| | ... | trial_duration=${1.0}
| | ... | trial_multiplicity=${1}
| | ... | use_latency=${use_latency}
| | ... | duration_limit=${1.0}
| | Return From Keyword If | ${disable_latency}
| | ${rate} = | Evaluate | 0.9 * ${pdr}
| | Measure and show latency at specified rate | Latency at 90% PDR: | ${rate}
| | ${rate} = | Evaluate | 0.5 * ${pdr}
| | Measure and show latency at specified rate | Latency at 50% PDR: | ${rate}
| | ${rate} = | Evaluate | 0.1 * ${pdr}
| | Measure and show latency at specified rate | Latency at 10% PDR: | ${rate}
| | Measure and show latency at specified rate | Latency at 0% PDR: | ${0.0}

| Find Throughput Using MLRsearch
| | [Documentation]
| | ... | Find and return lower bound NDR (zero PLR)
| | ... | throughput using MLRsearch algorithm.
| | ... | Input and output rates are understood as uni-directional, in tps.
| | ... | Call \${resetter} (if defined) to reset DUT state before each trial.
| |
| | ... | *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: integer or
| | ... | string
| | ... | - max_rate - Calculated maximal unidirectional transmit rate [tps].
| | ... | Type: float
| | ... | - resetter - Callable to reset DUT state before each trial.
| | ... | - transaction_scale - Number of ASTF transaction (zero if unlimited).
| | ... | - transaction_type - String identifier to determine how to count
| | ... | transactions. Default is "packet".
| |
| | ... | *Returns:*
| | ... | - Lower bound for uni-directional tps throughput at given PLR.
| | ... | Type: float
| |
| | ... | *Example:*
| |
| | ... | \| \${throughpt}= \| Find Throughput Using MLRsearch \|
| |
| | ${max_rate} = | Get Max 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
| | ${transaction_scale} = | Get Transaction Scale
| | ${transaction_type} = | Get Transaction Type
| | ${use_latency} = | Get Use Latency
| | ${result} = | Perform optimized ndrpdr search
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
| | ... | minimum_transmit_rate=${min_rate_soft}
| | ... | maximum_transmit_rate=${max_rate}
| | ... | packet_loss_ratio=${0.0}
| | ... | final_relative_width=${0.001}
| | ... | final_trial_duration=${10.0}
| | ... | initial_trial_duration=${1.0}
| | ... | number_of_intermediate_phases=${1}
| | ... | timeout=${1200}
| | ... | ppta=${ppta}
| | ... | resetter=${resetter}
| | ... | traffic_directions=${traffic_directions}
| | ... | transaction_duration=${transaction_duration}
| | ... | transaction_scale=${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[0]}
| | Return From Keyword | ${result[0].measured_low.target_tr}

| 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 float, so should not include "pps".
| | ... | If the given rate is too low, a safe value is used instead.
| | ... | Call \${resetter} (if defined) to reset DUT state before each trial.
| |
| | ... | *Arguments:*
| | ... | - message_prefix - Preface to test message addition. Type: string
| | ... | - rate - Unidirectional rate [tps] for sending packets.
| | ... | Type: float
| |
| | ... | *Example:*
| |
| | ... | \| Measure and show latency at specified rate \| Latency at 90% NDR \
| | ... | \| ${10000000} \|
| |
| | [Arguments] | ${message_prefix} | ${rate}
| |
| | ${min_rate_hard} = | Get Min Rate Hard
| | ${ppta} = | Get Packets Per Transaction Aggregated
| | ${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
| | ${transaction_type} = | Get Transaction Type
| | Call Resetter
| | Send traffic on tg
| | ... | duration=${PERF_TRIAL_LATENCY_DURATION}
| | ... | rate=${real_rate}
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
| | ... | async_call=${False}
| | ... | duration_limit=${PERF_TRIAL_LATENCY_DURATION}
| | ... | ppta=${ppta}
| | ... | traffic_directions=${traffic_directions}
| | ... | transaction_duration=${transaction_duration}
| | ... | 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}
| | Export Ndrpdr Latency | ${message_prefix} | ${latency}

| Send ramp-up traffic
| | [Documentation]
| | ... | 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,
| | ... | Duration has to be long enough to set all the state.
| | ... | The trial results are discarded.
| |
| | ... | *Test (or broader scope) variables read:*
| | ... | - traffic_profile - Name of module defining traffic for measurements.
| | ... | Type: string
| | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: integer or
| | ... | string
| | ... | - ramp_up_duration - Suitable traffic duration [s].
| | ... | Type: float
| | ... | - ramp_up_rate - Suitable unidirectional transmit rate [tps].
| | ... | Type: float
| | ... | - transaction_type - String identifier to determine how to count
| | ... | transactions. Default is "packet".
| |
| | ... | *Example:*
| |
| | ... | \| Send ramp-up traffic \|
| |
| | ${ramp_up_rate} = | Get Ramp Up Rate
| | Run Keyword If | ${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
| | ${transaction_scale} = | Get Transaction Scale
| | ${transaction_type} = | Get Transaction Type
| | ${use_latency} = | Get Use Latency
| | Send traffic on tg
| | ... | duration=${ramp_up_duration}
| | ... | rate=${ramp_up_rate}
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
| | ... | async_call=${False}
| | ... | duration_limit=${0.0}
| | ... | ppta=${ppta}
| | ... | use_latency=${use_latency}
| | ... | traffic_directions=${traffic_directions}
| | ... | 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]
| | ... | 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.
| | ... | Call \${resetter} (if defined) to reset DUT state before each trial.
| |
| | ... | *Arguments:*
| | ... | - trial_duration - Duration of single trial [s]. Type: float
| | ... | - rate - Target unidirectional transmit rate [tps]. Type: float
| | ... | Type: string
| | ... | - trial_multiplicity - How many trials in this measurement.
| | ... | Type: boolean
| | ... | - use_latency - Use latency stream in search; default value: False.
| | ... | Type: boolean
| | ... | - duration_limit - Hard limit for trial duration, overriding duration
| | ... | computed from transaction_scale. Default 0.0 means no limit.
| | ... | - export_mrr_unit - Use this unit when exporting MRR values,
| | ... | or empty string for no export.
| |
| | ... | *Example:*
| |
| | ... | \| Send traffic at specified rate \| \${1.0} \| ${4000000.0} \
| | ... | \| \${10} \| ${False} \| ${1.0} \| pps \|
| |
| | [Arguments] | ${trial_duration} | ${rate} | ${trial_multiplicity}
| | ... | ${use_latency}=${False} | ${duration_limit}=${0.0}
| | ... | ${export_mrr_unit}=${Empty}
| |
| | ${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
| | ${transaction_type} = | Get Transaction Type
| | Set Test Variable | \${rate_for_teardown} | ${rate}
| | Set Test Variable | \${runtime_rate} | ${rate}
| | FOR | ${action} | IN | @{stat_runtime}
| | | Run Keyword | Additional Statistics Action For ${action}
| | END
| | FOR | ${action} | IN | @{stat_pre_trial}
| | | Run Keyword | Additional Statistics Action For ${action}
| | END
| | ${results} = | Create List
| | FOR | ${i} | IN RANGE | ${trial_multiplicity}
| | | Call Resetter
| | | ${result} = | Send traffic on tg
| | | ... | duration=${trial_duration}
| | | ... | rate=${rate}
| | | ... | frame_size=${frame_size}
| | | ... | traffic_profile=${traffic_profile}
| | | ... | async_call=${False}
| | | ... | duration_limit=${duration_limit}
| | | ... | ppta=${ppta}
| | | ... | traffic_directions=${traffic_directions}
| | | ... | transaction_duration=${transaction_duration}
| | | ... | transaction_scale=${transaction_scale}
| | | ... | transaction_type=${transaction_type}
| | | ... | use_latency=${use_latency}
| | | ... | ramp_up_duration=${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.
| | | ${value} = | Set Variable | ${result.approximated_receive_rate}
| | | # TODO: Add correct bandwidth computation.
| | | Append Mrr Value | ${value} | ${export_mrr_unit}
| | | Append To List | ${results} | ${value}
| | END
| | FOR | ${action} | IN | @{stat_post_trial}
| | | Run Keyword | Additional Statistics Action For ${action}
| | END
| | Return From Keyword | ${results}

| Traffic should pass with maximum rate on iPerf3
| | [Documentation]
| | ... | Send traffic at maximum rate on iPerf3.
| |
| | ... | *Arguments:*
| | ... | - trial_duration - Duration of single trial [s].
| | ... | Type: float
| | ... | - trial_multiplicity - How many trials in this measurement.
| | ... | Type: integer
| | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic;
| | ... | Type: integer
| |
| | ... | *Example:*
| |
| | ... | \| Traffic should pass with maximum rate on iPerf3 \| \${1} \| \
| | ... | \| \${10.0} \| \${2} \|
| |
| | [Arguments] | ${trial_duration}=${trial_duration}
| | ... | ${trial_multiplicity}=${trial_multiplicity}
| | ... | ${traffic_directions}=${1}
| |
| | ${results}= | Send iPerf3 traffic at specified rate
| | ... | ${trial_duration} | ${None} | ${None}
| | ... | ${trial_multiplicity} | ${traffic_directions}
| | Set Test Message | ${\n}iPerf3 trial results
| | Set Test Message | in Gbits per second: ${results}
| | ... | append=yes

| Send iPerf3 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.
| |
| | ... | *Arguments:*
| | ... | - trial_duration - Duration of single trial [s].
| | ... | Type: float
| | ... | - rate - Target aggregated transmit rate [bps] / Bits per second.
| | ... | Type: float
| | ... | - frame_size - L2 Frame Size [B].
| | ... | Type: integer or string
| | ... | - trial_multiplicity - How many trials in this measurement.
| | ... | Type: integer
| | ... | - traffic_directions - Bi- (2) or uni- (1) directional traffic.
| | ... | Type: integer
| | ... | - extended_debug - True to enable extended debug.
| | ... | Type: boolean
| |
| | ... | *Example:*
| |
| | ... | \| Send iPerf3 traffic at specified rate \| \${1.0} \| ${4000000.0} \
| | ... | \| \${64} \| \${10} \| \${1} \| ${False} \|
| |
| | [Arguments] | ${trial_duration} | ${rate} | ${frame_size}
| | ... | ${trial_multiplicity}=${trial_multiplicity}
| | ... | ${traffic_directions}=${1} | ${extended_debug}=${extended_debug}
| |
| | Set Test Variable | ${extended_debug}
| | Set Test Variable | ${rate}
| | Set Test Variable | ${traffic_directions}
| |
| | ${smt_used}= | Is SMT enabled | ${nodes['${iperf_server_node}']['cpuinfo']}
| | ${vm_status} | ${value}= | Run Keyword And Ignore Error
| | ... | Get Library Instance | vnf_manager
| | ${vth}= | Evaluate | (${dp_count_int} + 1)
| | ${cpu_skip_cnt}= | Set Variable If | '${vm_status}' == 'PASS'
| | ... | ${CPU_CNT_SYSTEM}
| | ... | ${${CPU_CNT_SYSTEM} + ${CPU_CNT_MAIN} + ${cpu_count_int} + ${vth}}
| |
| | Initialize iPerf Server
| | ... | ${nodes['${iperf_server_node}']}
| | ... | pf_key=${iperf_server_pf_key}
| | ... | interface=${iperf_server_interface}
| | ... | bind=${iperf_server_bind}
| | ... | bind_gw=${iperf_server_bind_gw}
| | ... | bind_mask=${iperf_server_bind_mask}
| | ... | namespace=${iperf_server_namespace}
| | ... | cpu_skip_cnt=${cpu_skip_cnt}
| | Run Keyword If | '${iperf_client_namespace}' != '${None}'
| | ... | Set Linux Interface IP
| | ... | ${nodes['${iperf_client_node}']}
| | ... | interface=${iperf_client_interface}
| | ... | ip_addr=${iperf_client_bind}
| | ... | prefix=${iperf_client_bind_mask}
| | ... | namespace=${iperf_client_namespace}
| | Run Keyword If | '${iperf_client_namespace}' != '${None}'
| | ... | Add Default Route To Namespace
| | ... | ${nodes['${iperf_client_node}']}
| | ... | namespace=${iperf_client_namespace}
| | ... | default_route=${iperf_client_bind_gw}
| | ${stat_runtime}= | Create List
| | ... | vpp-runtime-iperf3
| | ${stat_pre_trial}= | Create List
| | ... | vpp-runtime-iperf3 | vpp-clear-stats | vpp-enable-packettrace
| | FOR | ${action} | IN | @{stat_runtime}
| | | Run Keyword | Additional Statistics Action For ${action}
| | END
| | FOR | ${action} | IN | @{stat_pre_trial}
| | | Run Keyword | Additional Statistics Action For ${action}
| | END
| | ${results} = | Create List
| | FOR | ${i} | IN RANGE | ${trial_multiplicity}
| | | ${rr} = | iPerf Client Start Remote Exec
| | | ... | ${nodes['${iperf_client_node}']}
| | | ... | duration=${trial_duration}
| | | ... | rate=${rate}
| | | ... | frame_size=${frame_size}
| | | ... | async_call=False
| | | ... | warmup_time=0
| | | ... | traffic_directions=${traffic_directions}
| | | ... | namespace=${iperf_client_namespace}
| | | ... | udp=${iperf_client_udp}
| | | ... | host=${iperf_server_bind}
| | | ... | bind=${iperf_client_bind}
| | | ... | affinity=${iperf_client_affinity}
| | | ${conv} = | Convert To Number | ${rr['sum_received']['bits_per_second']}
| | | ${conv} = | Evaluate | ${conv} / ${1000} / ${1000} / ${1000}
| | | ${conv} = | Evaluate | "{:.3f}".format(${conv})
| | | Append To List
| | | ... | ${results} | ${conv}
| | END
| | FOR | ${action} | IN | @{stat_post_trial}
| | | Run Keyword | Additional Statistics Action For ${action}
| | END
| | Return From Keyword | ${results}

| 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: integer or
| | ... | string
| | ... | *Arguments:*
| | ... | - rate - Unidirectional rate [tps] for sending packets.
| | ... | Type: float
| |
| | ... | *Example:*
| |
| | ... | \| Start Traffic on Background \| ${4000000.0} \|
| |
| | [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
| | ${transaction_type} = | Get Transaction Type
| | ${use_latency} = | Get Use Latency
| | Call Resetter
| | # Duration of -1 means we will stop traffic manually.
| | Send traffic on tg
| | ... | duration=${-1}
| | ... | rate=${rate}
| | ... | frame_size=${frame_size}
| | ... | traffic_profile=${traffic_profile}
| | ... | async_call=${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}

| 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}

| Traffic should pass with maximum rate
| | [Documentation]
| | ... | Send traffic at maximum rate.
| | ... | Call \${resetter} (if defined) to reset DUT state before each trial.
| | ... | Fail if no packets were forwarded.
| |
| | ... | *Test (or broader scope) variables read:*
| | ... | - traffic_profile - Name of module defining traffic for measurements.
| | ... | Type: string
| | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: integer or
| | ... | string
| | ... | - max_rate - Calculated maximal transmit rate [tps].
| | ... | Type: float
| | ... | - transaction_type - String identifier to determine how to count
| | ... | transactions. Default is "packet".
| |
| | ... | *Example:*
| |
| | ... | \| Traffic should pass with maximum rate \|
| |
| | ${max_rate} = | Get Max Rate
| | ${transaction_type} = | Get Transaction Type
| | ${trial_duration} = | Get Mrr Trial Duration
| | ${trial_multiplicity} = | Get Mrr Trial Multiplicity
| | ${use_latency} = | Get Use Latency
| | ${unit} = | Set Variable If | """_cps""" in """${transaction_type}"""
| | ... | cps | pps
| | # The following also sets \${rate_for_teardown}
| | Set Test Variable | ${telemetry_oload} | mrr
| | ${results} = | Send traffic at specified rate
| | ... | rate=${max_rate}
| | ... | trial_duration=${trial_duration}
| | ... | trial_multiplicity=${trial_multiplicity}
| | ... | use_latency=${use_latency}
| | ... | duration_limit=${0.0}
| | ... | export_mrr_unit=${unit}
| | ${unit_text} = | Set Variable If | """_cps""" in """${transaction_type}"""
| | ... | estimated connections per second | packets per second
| | Set Test Message | ${\n}Maximum Receive Rate trial results
| | Set Test Message | in ${unit_text}: ${results}
| | ... | append=yes
| | Fail if no traffic forwarded