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2026-07-28 - 15:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Intel
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rack1slot6s.osadl.org (updated Tue Jul 28, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
419199964,84cyclictest0-21swapper/110:53:191
419199964,84cyclictest0-21swapper/110:53:191
419199904,34cyclictest0-21swapper/108:14:531
419199893,13cyclictest0-21swapper/107:27:261
4191998833,48cyclictest25508-21needreboot09:43:251
419199883,35cyclictest0-21swapper/107:03:341
419199874,34cyclictest0-21swapper/111:23:281
419199863,32cyclictest0-21swapper/108:38:021
419199863,12cyclictest0-21swapper/111:03:541
4191998626,10cyclictest25188-21crond11:22:551
4191998618,13cyclictest0-21swapper/110:22:531
419199855,32cyclictest0-21swapper/109:58:131
419199855,30cyclictest0-21swapper/109:04:141
419199853,32cyclictest0-21swapper/106:28:071
419199853,30cyclictest31501-21head10:43:091
419199853,11cyclictest0-21swapper/109:38:001
419199853,11cyclictest0-21swapper/109:38:001
4191998529,48cyclictest17351-21cpuspeed_turbos08:43:151
4191998524,10cyclictest17363-21unixbench_multi11:08:321
419199845,30cyclictest0-21swapper/111:13:361
419199844,72cyclictest0-21swapper/110:42:421
419199844,31cyclictest4179-21cyclictest09:13:001
4191998425,9cyclictest29217-21sa108:13:031
4191998425,9cyclictest29217-21sa108:13:031
4191998424,8cyclictest1227-21runrttasks07:16:071
4191998420,57cyclictest6829-21timerwakeupswit10:03:321
419199835,34cyclictest0-21swapper/109:55:411
419199834,33cyclictest0-21swapper/111:28:121
419199834,31cyclictest0-21swapper/110:28:341
419199834,31cyclictest0-21swapper/109:13:181
419199834,12cyclictest0-21swapper/108:27:161
419199834,11cyclictest0-21swapper/109:18:341
419199833,29cyclictest24886-21netstat08:53:281
419199833,29cyclictest24886-21netstat08:53:281
419199833,28cyclictest0-21swapper/109:23:591
419199824,32cyclictest0-21swapper/111:38:201
419199824,32cyclictest0-21swapper/111:38:201
419199823,9cyclictest28281-21processes08:58:281
419199823,20cyclictest30679-21ssh09:53:001
419199814,9cyclictest3270-21gltestperf10:48:161
419199814,31cyclictest0-21swapper/110:13:221
419199814,31cyclictest0-21swapper/110:13:221
419199814,12cyclictest0-21swapper/108:41:451
419199814,11cyclictest20501-21ssh10:24:481
419199813,8cyclictest15190-21grep09:28:181
419199813,13cyclictest0-21swapper/109:38:261
4191998129,8cyclictest6017-21timerwakeupswit06:13:391
4191998127,10cyclictest22574-21cpuspeed_turbos07:58:181
4191998125,9cyclictest32384-21unixbench_multi07:08:391
4191998121,9cyclictest9148-21needreboot07:28:301
4191998121,9cyclictest9148-21needreboot07:28:301
419199804,30cyclictest0-21swapper/108:03:041
419199804,29cyclictest0-21swapper/108:19:251
419199804,28cyclictest0-21swapper/110:34:111
419199803,12cyclictest0-21swapper/108:28:111
4191998023,9cyclictest13557-21gltestperf07:38:231
419199793,31cyclictest21465-21cpuspeed_turbos06:48:191
4191997924,8cyclictest4416-21netstat07:18:331
4191997916,10cyclictest23502-21munin-node06:53:211
4191997915,16cyclictest0-21swapper/110:08:191
419199784,29cyclictest0-21swapper/111:02:561
419199783,27cyclictest18489-21crond06:43:061
4191997823,8cyclictest1227-21runrttasks07:43:241
4191997722,8cyclictest2551-21rm11:37:091
219499770,4rtkit-daemon2193-21rtkit-daemon09:30:562
4191997622,9cyclictest7606-21gltestperf06:18:271
4191997521,10cyclictest26155-21cpuspeed_turbos06:58:211
419199743,32cyclictest0-21swapper/107:48:411
419199733,32cyclictest0-21swapper/108:48:111
4191997321,8cyclictest13957-21munin-node06:33:281
4191997024,9cyclictest0-21swapper/106:43:351
219499700,8rtkit-daemon0-21swapper/310:01:253
419199693,30cyclictest0-21swapper/106:13:091
219499690,4rtkit-daemon2193-21rtkit-daemon11:29:362
4191996721,10cyclictest11213-21gltestperf07:33:241
219499670,3rtkit-daemon0-21swapper/306:52:473
4193996614,27cyclictest0-21swapper/309:53:233
219499660,8rtkit-daemon0-21swapper/309:13:193
419299654,55cyclictest0-21swapper/210:08:242
419299653,55cyclictest17851-21gltestperf08:43:212
219499650,4rtkit-daemon0-21swapper/309:36:113
219499650,4rtkit-daemon0-21swapper/309:36:113
219499650,2rtkit-daemon0-21swapper/307:01:243
219499640,9rtkit-daemon0-21swapper/309:29:033
219499640,9rtkit-daemon0-21swapper/309:12:193
219499640,9rtkit-daemon0-21swapper/307:46:303
219499640,9rtkit-daemon0-21swapper/307:30:383
219499640,9rtkit-daemon0-21swapper/307:30:383
219499640,9rtkit-daemon0-21swapper/306:41:023
219499640,9rtkit-daemon0-21swapper/306:18:563
219499640,8rtkit-daemon0-21swapper/311:06:153
219499640,8rtkit-daemon0-21swapper/310:04:403
219499640,3rtkit-daemon0-21swapper/311:39:283
219499640,3rtkit-daemon0-21swapper/311:39:283
219499640,3rtkit-daemon0-21swapper/310:50:233
219499640,3rtkit-daemon0-21swapper/308:56:503
219499640,3rtkit-daemon0-21swapper/308:56:503
219499640,3rtkit-daemon0-21swapper/308:05:523
219499640,3rtkit-daemon0-21swapper/307:37:003
219499640,3rtkit-daemon0-21swapper/307:06:093
219499640,3rtkit-daemon0-21swapper/306:43:553
219499640,3rtkit-daemon0-21swapper/306:24:113
219499640,10rtkit-daemon0-21swapper/311:22:593
219499640,10rtkit-daemon0-21swapper/307:20:083
219499640,10rtkit-daemon0-21swapper/306:14:493
419399634,36cyclictest9762-21ssh10:08:273
4193996319,37cyclictest28751-21munin-node11:28:293
419299634,52cyclictest0-21swapper/208:25:432
419199633,12cyclictest20208-21tr07:53:181
219499630,9rtkit-daemon0-21swapper/307:48:073
219499630,9rtkit-daemon0-21swapper/306:54:393
219499630,8rtkit-daemon0-21swapper/310:59:223
219499630,8rtkit-daemon0-21swapper/310:24:243
219499630,7rtkit-daemon0-21swapper/311:13:443
219499630,7rtkit-daemon0-21swapper/309:00:503
219499630,4rtkit-daemon23653-21ssh10:29:163
219499630,4rtkit-daemon0-21swapper/307:16:313
219499630,3rtkit-daemon0-21swapper/311:19:443
219499630,3rtkit-daemon0-21swapper/310:53:233
219499630,3rtkit-daemon0-21swapper/310:53:233
219499630,3rtkit-daemon0-21swapper/309:21:343
219499630,3rtkit-daemon0-21swapper/309:06:493
219499630,3rtkit-daemon0-21swapper/308:48:573
219499630,3rtkit-daemon0-21swapper/308:34:213
219499630,3rtkit-daemon0-21swapper/308:31:363
219499630,3rtkit-daemon0-21swapper/308:08:443
219499630,3rtkit-daemon0-21swapper/308:08:443
219499630,3rtkit-daemon0-21swapper/307:58:293
219499630,2rtkit-daemon0-21swapper/311:10:593
219499630,2rtkit-daemon0-21swapper/307:39:153
219499630,10rtkit-daemon0-21swapper/307:54:153
219499630,10rtkit-daemon0-21swapper/306:31:553
419299625,42cyclictest0-21swapper/208:40:162
419299624,51cyclictest0-21swapper/211:13:302
419299624,50cyclictest0-21swapper/210:23:082
253782626,48sleep20-21swapper/210:33:142
219499620,9rtkit-daemon0-21swapper/310:40:313
219499620,8rtkit-daemon0-21swapper/310:18:393
219499620,8rtkit-daemon0-21swapper/309:26:113
219499620,7rtkit-daemon0-21swapper/309:50:333
219499620,7rtkit-daemon0-21swapper/308:27:363
219499620,5rtkit-daemon12-21rcu_preempt09:43:553
219499620,3rtkit-daemon0-21swapper/310:45:383
219499620,3rtkit-daemon0-21swapper/309:40:403
219499620,3rtkit-daemon0-21swapper/308:40:433
219499620,3rtkit-daemon0-21swapper/308:18:063
219499620,3rtkit-daemon0-21swapper/308:14:063
219499620,3rtkit-daemon0-21swapper/306:34:253
219499620,2rtkit-daemon0-21swapper/311:35:583
219499620,10rtkit-daemon0-21swapper/310:13:173
219499620,10rtkit-daemon0-21swapper/310:13:173
419299613,51cyclictest0-21swapper/208:33:192
418799613,49cyclictest0-21swapper/008:03:170
219499610,3rtkit-daemon0-21swapper/310:34:463
219499610,3rtkit-daemon0-21swapper/307:24:463
14042613,10sleep00-21swapper/011:33:310
419199603,29cyclictest0-21swapper/106:30:491
418799604,39cyclictest0-21swapper/009:53:300
418799603,50cyclictest0-21swapper/009:41:140
418799603,50cyclictest0-21swapper/008:34:400
418799603,50cyclictest0-21swapper/008:29:440
418799603,49cyclictest0-21swapper/009:52:120
37092603,11sleep20-21swapper/209:58:352
214002603,49sleep20-21swapper/206:48:202
91242593,48sleep00-21swapper/009:18:300
419299594,49cyclictest0-21swapper/209:48:332
419299593,49cyclictest25260-21timerwakeupswit08:53:352
419299593,49cyclictest25260-21timerwakeupswit08:53:352
419299593,49cyclictest23010-21grep07:58:222
418799595,27cyclictest0-21swapper/008:18:180
418799594,49cyclictest0-21swapper/011:13:270
4187995931,13cyclictest0-21swapper/008:28:020
418799593,50cyclictest0-21swapper/010:59:040
418799593,50cyclictest0-21swapper/010:28:410
418799593,50cyclictest0-21swapper/010:01:160
418799593,50cyclictest0-21swapper/009:17:550
418799593,50cyclictest0-21swapper/009:12:030
418799593,50cyclictest0-21swapper/008:51:300
418799593,49cyclictest0-21swapper/011:32:160
418799593,49cyclictest0-21swapper/011:18:190
418799593,49cyclictest0-21swapper/008:41:490
418799593,47cyclictest0-21swapper/010:08:350
418799592,49cyclictest0-21swapper/010:14:240
418799592,49cyclictest0-21swapper/010:14:240
419299583,50cyclictest0-21swapper/209:06:512
418799585,46cyclictest0-21swapper/011:23:010
418799584,47cyclictest0-21swapper/008:13:210
418799584,46cyclictest0-21swapper/010:04:090
418799583,50cyclictest0-21swapper/011:40:310
418799583,50cyclictest0-21swapper/011:40:310
418799583,50cyclictest0-21swapper/009:32:100
418799583,50cyclictest0-21swapper/009:07:170
418799583,49cyclictest0-21swapper/009:23:150
418799583,48cyclictest0-21swapper/011:10:200
418799583,48cyclictest0-21swapper/011:06:090
418799583,48cyclictest0-21swapper/010:39:520
418799583,48cyclictest0-21swapper/010:19:290
418799583,47cyclictest0-21swapper/008:55:170
418799583,47cyclictest0-21swapper/008:55:170
418799582,50cyclictest0-21swapper/008:59:000
4187995816,34cyclictest0-21swapper/008:43:130
175982584,47sleep20-21swapper/211:09:022
419299574,35cyclictest0-21swapper/211:20:432
419299573,46cyclictest0-21swapper/211:38:332
419299573,46cyclictest0-21swapper/211:38:332
419299573,36cyclictest5748-21ssh10:03:172
418799577,22cyclictest0-21swapper/007:23:230
418799573,49cyclictest0-21swapper/010:26:560
418799573,48cyclictest0-21swapper/009:44:180
418799573,47cyclictest0-21swapper/010:54:540
418799573,47cyclictest0-21swapper/010:54:540
418799573,47cyclictest0-21swapper/010:43:470
43622563,46sleep00-21swapper/010:48:440
419299564,47cyclictest0-21swapper/211:27:152
419299564,46cyclictest0-21swapper/210:31:082
419299564,46cyclictest0-21swapper/209:02:412
419299563,46cyclictest0-21swapper/208:28:152
419299563,38cyclictest0-21swapper/210:15:482
419299563,38cyclictest0-21swapper/210:15:482
419299563,31cyclictest0-21swapper/209:38:262
419299563,29cyclictest0-21swapper/209:24:402
419299563,26cyclictest0-21swapper/210:18:242
418799564,27cyclictest0-21swapper/010:33:200
418799563,46cyclictest0-21swapper/009:33:070
418799563,46cyclictest0-21swapper/009:33:070
418799562,44cyclictest0-21swapper/006:48:170
143292563,6sleep00-21swapper/006:33:220
4192995535,11cyclictest31650-21tune2fs09:53:192
419299553,45cyclictest0-21swapper/209:34:112
419299553,45cyclictest0-21swapper/209:34:112
419299553,45cyclictest0-21swapper/206:53:192
4187995525,24cyclictest0-21swapper/007:18:370
255152553,12sleep00-21swapper/006:56:240
147412553,46sleep00-21swapper/007:41:300
419299544,44cyclictest0-21swapper/209:10:492
419299544,30cyclictest0-21swapper/207:53:502
419299544,29cyclictest0-21swapper/209:17:022
419299544,28cyclictest0-21swapper/211:03:242
419299544,24cyclictest0-21swapper/210:51:482
419299543,44cyclictest0-21swapper/211:34:052
4192995421,15cyclictest0-21swapper/208:08:282
4192995421,15cyclictest0-21swapper/208:08:282
419299542,38cyclictest0-21swapper/210:45:392
418799545,29cyclictest0-21swapper/007:57:260
418799545,29cyclictest0-21swapper/006:38:370
4187995427,11cyclictest0-21swapper/006:58:380
289252543,10sleep00-21swapper/008:09:280
289252543,10sleep00-21swapper/008:09:280
112662543,11sleep00-21swapper/006:27:180
100452543,11sleep00-21swapper/007:32:280
100452543,11sleep00-21swapper/007:32:280
419399533,35cyclictest0-21swapper/308:44:183
4187995320,14cyclictest0-21swapper/006:18:280
418799532,43cyclictest0-21swapper/007:03:260
325152533,43sleep00-21swapper/007:09:060
219499530,6rtkit-daemon2193-21rtkit-daemon07:31:012
219499530,6rtkit-daemon2193-21rtkit-daemon07:31:012
219499530,5rtkit-daemon2193-21rtkit-daemon07:13:242
207982533,11sleep00-21swapper/006:47:090
170492534,43sleep00-21swapper/007:45:260
419299524,29cyclictest0-21swapper/208:48:372
419299524,27cyclictest0-21swapper/206:58:412
419299523,35cyclictest0-21swapper/206:23:182
419299523,25cyclictest0-21swapper/206:38:192
419299523,24cyclictest0-21swapper/208:18:072
4192995218,8cyclictest10495-21ssh09:21:502
418799524,29cyclictest0-21swapper/007:33:250
304392523,10sleep20-21swapper/210:40:072
243272523,43sleep00-21swapper/008:01:580
219499520,5rtkit-daemon2193-21rtkit-daemon07:48:302
219499520,5rtkit-daemon2193-21rtkit-daemon07:26:532
109032523,8sleep229211-21diskmemload10:58:332
50162513,10sleep20-21swapper/207:19:072
419299515,29cyclictest0-21swapper/207:42:242
419299513,29cyclictest0-21swapper/208:13:192
419299513,27cyclictest0-21swapper/207:33:382
419299512,35cyclictest0-21swapper/206:15:282
419299512,10cyclictest0-21swapper/207:03:322
4192995119,14cyclictest0-21swapper/210:53:002
4192995119,14cyclictest0-21swapper/210:53:002
4192995113,25cyclictest0-21swapper/206:20:162
418799513,43cyclictest0-21swapper/006:28:250
27352513,41sleep00-21swapper/007:15:390
219499510,5rtkit-daemon2193-21rtkit-daemon07:08:392
64372503,11sleep00-21swapper/006:16:340
419299504,39cyclictest0-21swapper/209:43:162
418799504,27cyclictest0-21swapper/007:48:320
205882502,9sleep20-21swapper/206:44:252
4193994913,21cyclictest30769-21head07:08:183
419299492,42cyclictest0-21swapper/206:33:362
4192994820,12cyclictest0-21swapper/208:03:232
419299482,42cyclictest0-21swapper/207:43:332
419299454,12cyclictest0-21swapper/206:28:292
38632414,30sleep00-21swapper/006:09:210
4193994011,12cyclictest0-21swapper/306:13:083
335923710,16sleep20-21swapper/206:08:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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