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2026-08-17 - 21:47

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 Mon Aug 17, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2194991130,8rtkit-daemon0-21swapper/110:04:041
22169991105,51cyclictest0-21swapper/109:14:321
22170999934,12cyclictest0-21swapper/211:04:262
2217099985,27cyclictest0-21swapper/208:09:302
2216799984,86cyclictest0-21swapper/008:06:260
2217099978,31cyclictest0-21swapper/209:41:422
2217099978,31cyclictest0-21swapper/209:41:422
2217099964,13cyclictest0-21swapper/209:52:572
2216799966,81cyclictest0-21swapper/009:34:240
2216799964,74cyclictest0-21swapper/009:49:320
272672950,6sleep20-21swapper/207:09:472
2217099954,39cyclictest0-21swapper/208:04:392
2216799954,82cyclictest0-21swapper/008:14:150
22170999435,14cyclictest0-21swapper/208:29:452
2217099934,44cyclictest0-21swapper/209:29:392
219499930,5rtkit-daemon2193-21rtkit-daemon08:22:231
22170999239,46cyclictest0-21swapper/210:54:242
22170999236,13cyclictest0-21swapper/210:29:262
2216799924,80cyclictest0-21swapper/011:01:110
2216799924,80cyclictest0-21swapper/011:01:110
2216799924,54cyclictest0-21swapper/007:09:320
2216799924,53cyclictest0-21swapper/010:34:160
22167999210,66cyclictest7374-21missed_timers08:29:380
2216799915,69cyclictest0-21swapper/009:59:220
2216799914,80cyclictest0-21swapper/007:59:220
2216799914,80cyclictest0-21swapper/006:54:390
2216799914,80cyclictest0-21swapper/006:54:390
2216799914,79cyclictest0-21swapper/009:21:400
2216799914,79cyclictest0-21swapper/008:34:440
2216799914,58cyclictest0-21swapper/009:29:310
2216799913,80cyclictest2693-21missed_timers10:49:340
2216799913,80cyclictest0-21swapper/011:22:270
2216799904,79cyclictest0-21swapper/010:47:550
2216799904,78cyclictest0-21swapper/009:19:060
2216799903,80cyclictest0-21swapper/007:59:090
2216799903,79cyclictest0-21swapper/008:49:420
2216799903,51cyclictest0-21swapper/010:16:520
2216799903,51cyclictest0-21swapper/010:16:520
2216799903,51cyclictest0-21swapper/008:41:350
2216799899,65cyclictest16094-21runrttasks10:20:300
2216799894,78cyclictest0-21swapper/011:12:550
2216799894,67cyclictest0-21swapper/008:18:010
2216799894,67cyclictest0-21swapper/008:18:010
2216799894,53cyclictest0-21swapper/010:07:180
2216799894,52cyclictest0-21swapper/009:54:220
2216799893,79cyclictest0-21swapper/009:39:250
2216799893,79cyclictest0-21swapper/009:39:250
2216799893,78cyclictest0-21swapper/010:54:420
2217099884,42cyclictest0-21swapper/208:54:402
2217099884,42cyclictest0-21swapper/208:54:402
2216799885,75cyclictest0-21swapper/010:31:320
2216799884,77cyclictest0-21swapper/009:01:460
2216799884,77cyclictest0-21swapper/006:51:560
2216799884,76cyclictest0-21swapper/010:41:150
2216799884,68cyclictest0-21swapper/009:09:340
2216799883,48cyclictest0-21swapper/008:44:520
2216799874,76cyclictest0-21swapper/009:08:420
2216799874,65cyclictest0-21swapper/011:17:500
2216799874,64cyclictest0-21swapper/008:57:320
2216799874,64cyclictest0-21swapper/008:57:320
2216799873,9cyclictest1227-21runrttasks10:25:320
2216799873,77cyclictest0-21swapper/007:19:380
2216799873,51cyclictest0-21swapper/008:26:130
240472863,47sleep10-21swapper/111:23:291
2217099864,23cyclictest1227-21runrttasks10:15:102
2217099864,23cyclictest1227-21runrttasks10:15:102
2216799866,63cyclictest2349-21ssh08:23:030
2216799864,76cyclictest0-21swapper/009:24:440
2216799864,75cyclictest0-21swapper/011:04:400
2216799864,74cyclictest0-21swapper/007:29:160
2216799863,75cyclictest0-21swapper/006:37:120
2216799863,57cyclictest9303-21munin-node10:09:460
2217099853,38cyclictest1713-21grep10:49:232
2216799854,73cyclictest0-21swapper/005:59:370
2216799854,69cyclictest0-21swapper/007:44:310
2216799854,65cyclictest0-21swapper/006:59:420
22170998432,12cyclictest0-21swapper/210:14:082
2217099843,41cyclictest0-21swapper/211:14:382
2216799844,73cyclictest0-21swapper/007:14:340
2216799843,75cyclictest0-21swapper/006:44:460
2216799834,73cyclictest0-21swapper/006:15:580
2216799834,73cyclictest0-21swapper/006:15:580
2216799834,67cyclictest0-21swapper/007:34:360
2216799833,72cyclictest0-21swapper/007:53:190
2216799833,60cyclictest0-21swapper/009:44:240
2217099824,44cyclictest0-21swapper/208:27:362
22170998225,12cyclictest0-21swapper/209:59:212
2216799824,68cyclictest0-21swapper/005:54:190
22167998236,39cyclictest8572-21unixbench_singl06:29:520
2216799823,8cyclictest10110-21crond07:44:150
2216799823,8cyclictest10110-21crond07:44:150
22170998139,10cyclictest0-21swapper/208:16:032
22170998139,10cyclictest0-21swapper/208:16:032
2216799814,70cyclictest0-21swapper/006:44:180
2216799814,51cyclictest0-21swapper/007:04:490
2216799813,66cyclictest0-21swapper/006:09:400
2216799804,69cyclictest0-21swapper/006:24:400
2216799794,68cyclictest0-21swapper/006:04:530
2216799793,8cyclictest5283-21chrt07:33:390
260352784,67sleep20-21swapper/209:48:072
22167997810,49cyclictest0-21swapper/005:54:430
22170997741,9cyclictest0-21swapper/207:58:562
2217099763,23cyclictest0-21swapper/208:35:122
22170997622,23cyclictest0-21swapper/207:44:422
2216799764,64cyclictest0-21swapper/006:19:310
219499720,2rtkit-daemon0-21swapper/311:05:013
2217199659,20cyclictest0-21swapper/308:35:513
2216999655,51cyclictest3288-21unixbench_multi10:49:431
2216999654,52cyclictest0-21swapper/110:38:581
22169996525,31cyclictest20227-21wc06:54:491
22169996525,31cyclictest20227-21wc06:54:491
219499640,9rtkit-daemon0-21swapper/009:46:271
2217199634,49cyclictest0-21swapper/310:33:003
2216999634,14cyclictest0-21swapper/107:59:401
219499630,7rtkit-daemon18159-21ps09:34:421
219499630,3rtkit-daemon0-21swapper/306:08:133
22170996242,13cyclictest0-21swapper/209:04:332
219499620,2rtkit-daemon0-21swapper/306:31:423
22171996143,11cyclictest23058-21cpuspeed_turbos08:54:303
22171996143,11cyclictest23058-21cpuspeed_turbos08:54:303
22170996141,14cyclictest0-21swapper/206:14:452
22170996141,14cyclictest0-21swapper/206:14:452
22170996141,13cyclictest0-21swapper/211:10:582
219499610,8rtkit-daemon0-21swapper/306:15:433
219499610,8rtkit-daemon0-21swapper/306:15:433
219499610,7rtkit-daemon0-21swapper/308:06:163
219499610,3rtkit-daemon0-21swapper/310:52:243
219499610,3rtkit-daemon0-21swapper/310:46:403
219499610,3rtkit-daemon0-21swapper/310:43:103
219499610,3rtkit-daemon0-21swapper/308:22:083
219499610,2rtkit-daemon0-21swapper/311:18:233
219499610,2rtkit-daemon0-21swapper/307:29:323
22171996043,10cyclictest25140-21needreboot10:34:343
22171996014,25cyclictest5743-21sed10:54:293
22169996041,11cyclictest26957-21sh08:09:491
22169996020,22cyclictest26959-21cstates09:49:251
219499600,8rtkit-daemon0-21swapper/306:20:423
219499600,7rtkit-daemon0-21swapper/306:25:423
219499600,7rtkit-daemon0-21swapper/009:05:511
219499600,5rtkit-daemon2193-21rtkit-daemon11:22:383
219499600,3rtkit-daemon0-21swapper/306:35:343
219499600,2rtkit-daemon0-21swapper/310:59:173
219499600,2rtkit-daemon0-21swapper/310:59:173
219499600,2rtkit-daemon0-21swapper/307:45:323
219499600,2rtkit-daemon0-21swapper/307:44:093
219499600,2rtkit-daemon0-21swapper/307:44:093
219499600,2rtkit-daemon0-21swapper/307:28:323
2217199594,37cyclictest0-21swapper/309:03:493
2217199594,36cyclictest0-21swapper/308:53:233
2217199593,36cyclictest0-21swapper/309:55:443
2216999596,31cyclictest11616-21yum-updatesd-he08:35:471
2216999595,30cyclictest1227-21runrttasks08:32:221
22169995919,33cyclictest1227-21runrttasks11:18:391
219499590,2rtkit-daemon0-21swapper/308:18:153
219499590,2rtkit-daemon0-21swapper/308:18:153
219499590,2rtkit-daemon0-21swapper/308:02:013
219499590,2rtkit-daemon0-21swapper/307:55:543
219499590,2rtkit-daemon0-21swapper/307:35:403
22170995844,9cyclictest0-21swapper/208:44:322
22170995838,13cyclictest0-21swapper/211:19:222
2217099583,39cyclictest0-21swapper/211:00:492
2217099583,39cyclictest0-21swapper/211:00:492
2216999583,13cyclictest0-21swapper/110:04:221
219499580,5rtkit-daemon2349-21ssh09:10:431
219499580,2rtkit-daemon0-21swapper/308:10:083
22170995739,12cyclictest0-21swapper/209:09:422
2217099573,38cyclictest0-21swapper/208:52:482
22170995728,13cyclictest0-21swapper/210:22:262
22170995728,13cyclictest0-21swapper/209:21:292
22170995728,12cyclictest0-21swapper/210:48:282
206242572,10sleep30-21swapper/306:55:423
206242572,10sleep30-21swapper/306:55:423
314382563,10sleep30-21swapper/307:19:363
271832564,8sleep327333-21fschecks_time09:49:293
22170995641,10cyclictest0-21swapper/209:27:422
2217099564,44cyclictest0-21swapper/207:59:482
22170995634,10cyclictest0-21swapper/208:20:282
2216999566,15cyclictest0-21swapper/108:28:411
2216999564,12cyclictest0-21swapper/109:54:291
2216999563,13cyclictest4789-21munin-node10:54:371
219499560,5rtkit-daemon2193-21rtkit-daemon06:49:342
2217199554,42cyclictest0-21swapper/308:44:293
22171995538,9cyclictest15063-21ssh10:19:313
2216999555,30cyclictest0-21swapper/108:04:271
2216999555,15cyclictest0-21swapper/109:21:091
2216999555,13cyclictest0-21swapper/109:40:211
2216999555,13cyclictest0-21swapper/109:40:211
2216999554,31cyclictest0-21swapper/111:04:261
22169995520,12cyclictest0-21swapper/110:12:481
219499550,5rtkit-daemon2193-21rtkit-daemon06:59:482
169062553,46sleep10-21swapper/110:23:381
37452542,12sleep10-21swapper/107:29:341
231182543,45sleep10-21swapper/107:02:011
222662543,44sleep10-21swapper/108:53:401
2217199548,27cyclictest0-21swapper/308:29:153
2217199545,30cyclictest0-21swapper/310:09:093
22170995439,9cyclictest7169-21crond10:09:092
2216999549,8cyclictest107550irq/46-eth008:40:591
2216999545,16cyclictest0-21swapper/109:24:341
2216999543,12cyclictest0-21swapper/110:14:381
2216999543,12cyclictest0-21swapper/110:14:381
22169995423,25cyclictest0-21swapper/107:36:451
22169995421,13cyclictest0-21swapper/106:29:201
219499540,5rtkit-daemon2193-21rtkit-daemon06:54:492
219499540,5rtkit-daemon2193-21rtkit-daemon06:54:492
193902543,45sleep10-21swapper/110:25:321
256562533,11sleep20-21swapper/207:08:592
2217199534,29cyclictest0-21swapper/306:09:303
22171995334,12cyclictest21967-21gltestperf06:59:373
22171995334,11cyclictest13743-21crond10:19:093
22171995334,11cyclictest13743-21crond10:19:093
22171995333,13cyclictest0-21swapper/309:37:093
2217099534,42cyclictest0-21swapper/209:54:452
22170995334,12cyclictest0-21swapper/210:39:322
2216999536,14cyclictest0-21swapper/109:31:311
2216999535,29cyclictest0-21swapper/110:44:401
2216999534,28cyclictest0-21swapper/105:54:561
2216999533,27cyclictest0-21swapper/106:43:561
22169995325,13cyclictest0-21swapper/107:24:201
22169995321,14cyclictest0-21swapper/111:00:111
22169995321,14cyclictest0-21swapper/111:00:111
22169995320,14cyclictest0-21swapper/110:42:541
22169995315,10cyclictest0-21swapper/108:59:391
219499530,5rtkit-daemon2193-21rtkit-daemon05:54:362
76042523,10sleep37676-21munin-node08:29:433
302442523,43sleep10-21swapper/107:16:361
2217199524,42cyclictest0-21swapper/310:13:143
2217199523,43cyclictest19556-21ssh10:26:093
22170995232,13cyclictest0-21swapper/206:19:342
22170995225,12cyclictest0-21swapper/210:25:362
2216999526,24cyclictest0-21swapper/107:54:261
2216999525,25cyclictest9291-21aten2.4-expect06:34:311
2216999525,25cyclictest23148-21df08:54:311
2216999525,25cyclictest23148-21df08:54:311
2216999525,13cyclictest0-21swapper/108:44:191
2216999524,29cyclictest0-21swapper/107:49:151
2216999524,28cyclictest0-21swapper/107:49:281
2216999524,28cyclictest0-21swapper/106:44:481
22169995220,13cyclictest0-21swapper/108:14:181
22169995220,13cyclictest0-21swapper/108:14:181
219499520,5rtkit-daemon2193-21rtkit-daemon07:19:482
253622512,43sleep10-21swapper/107:05:071
2217199514,41cyclictest0-21swapper/306:44:483
2217199514,30cyclictest0-21swapper/311:12:213
2217199514,28cyclictest0-21swapper/306:04:203
2217199514,25cyclictest2681-21unixbench_singl09:59:433
2217199514,25cyclictest0-21swapper/307:49:273
22171995132,11cyclictest23875-21cut07:04:313
22171995132,11cyclictest11888-21cpuspeed_turbos06:39:313
22171995130,15cyclictest0-21swapper/309:42:143
22171995130,15cyclictest0-21swapper/309:42:143
22171995130,13cyclictest24535-21crond05:59:193
22171995124,10cyclictest107550irq/46-eth008:39:463
22171995121,12cyclictest0-21swapper/309:47:423
22171995114,9cyclictest121902chrt09:25:343
2217099514,41cyclictest0-21swapper/210:39:082
2217099514,40cyclictest0-21swapper/208:39:462
2217099514,40cyclictest0-21swapper/206:09:392
22170995123,12cyclictest0-21swapper/209:14:402
2216999515,27cyclictest0-21swapper/110:29:121
2216999515,14cyclictest0-21swapper/111:13:261
2216999514,28cyclictest0-21swapper/106:09:371
2216999514,27cyclictest0-21swapper/107:23:551
2216999514,27cyclictest0-21swapper/106:49:361
2216999513,28cyclictest0-21swapper/105:59:401
219499510,5rtkit-daemon2193-21rtkit-daemon06:41:342
187402512,10sleep20-21swapper/209:35:252
2217199504,28cyclictest0-21swapper/309:14:123
22170995038,7cyclictest27470-21mailstats08:59:422
2216999504,28cyclictest0-21swapper/106:04:441
2216999504,27cyclictest0-21swapper/106:14:451
2216999504,27cyclictest0-21swapper/106:14:451
22169995020,12cyclictest0-21swapper/106:22:571
153692504,7sleep315372-21sh09:30:103
2217199494,37cyclictest0-21swapper/309:19:353
22171994931,10cyclictest28576-21cpuspeed_turbos07:14:293
22171994915,27cyclictest3652-21tail09:14:263
2217099499,33cyclictest0-21swapper/206:24:412
2217099494,28cyclictest0-21swapper/207:34:502
2217199484,12cyclictest0-21swapper/309:05:393
2217099484,26cyclictest0-21swapper/206:44:412
22170994830,12cyclictest0-21swapper/207:44:152
22170994830,12cyclictest0-21swapper/207:44:152
2217099483,27cyclictest0-21swapper/207:29:392
2216999485,36cyclictest0-21swapper/107:09:411
22169994831,11cyclictest8838-21gltestperf07:39:351
22169994831,11cyclictest8838-21gltestperf07:39:351
219499480,4rtkit-daemon2193-21rtkit-daemon06:02:062
22171994727,11cyclictest25976-21aten_r1power_en07:09:293
2217099472,40cyclictest0-21swapper/206:34:402
22169994731,10cyclictest6963-21aten_r1power_vo06:29:311
2217099463,13cyclictest0-21swapper/207:24:322
22170994615,13cyclictest0-21swapper/206:29:362
2217099453,26cyclictest0-21swapper/206:04:322
22171994428,10cyclictest17214-21gltestperf06:49:383
2217099444,24cyclictest0-21swapper/207:14:262
2217099433,14cyclictest0-21swapper/207:49:342
2142924011,17sleep30-21swapper/305:49:493
2216999394,14cyclictest0-21swapper/105:54:191
219499380,5rtkit-daemon2193-21rtkit-daemon05:49:362
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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