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2026-04-15 - 19:55

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 highest latencies:
System rack1slot6s.osadl.org (updated Wed Apr 15, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2165021080,5sleep321653-21head09:49:343
1877199995,34cyclictest0-21swapper/107:32:561
248599940,21rtkit-daemon0-21swapper/205:59:213
1876899944,83cyclictest0-21swapper/007:59:280
1876899934,82cyclictest0-21swapper/010:34:160
1876899934,82cyclictest0-21swapper/010:34:160
1876899928,77cyclictest0-21swapper/009:44:350
1876899924,81cyclictest0-21swapper/009:40:050
1876899924,7cyclictest1419-21runrttasks10:14:200
248599910,24rtkit-daemon0-21swapper/210:34:033
248599910,24rtkit-daemon0-21swapper/210:34:033
1876899917,10cyclictest24003-21grep07:29:390
1876899914,80cyclictest0-21swapper/009:34:280
1876899914,79cyclictest0-21swapper/008:10:180
1876899913,82cyclictest0-21swapper/007:15:190
1876899913,82cyclictest0-21swapper/007:15:190
1876899907,68cyclictest0-21swapper/007:43:360
1876899904,79cyclictest0-21swapper/009:29:400
1876899904,79cyclictest0-21swapper/008:23:260
1876899894,78cyclictest0-21swapper/010:19:290
1876899894,78cyclictest0-21swapper/009:04:220
1876899894,78cyclictest0-21swapper/008:29:340
1876899894,78cyclictest0-21swapper/006:54:180
1876899894,77cyclictest0-21swapper/008:18:340
1876899893,56cyclictest0-21swapper/008:34:360
1876899893,56cyclictest0-21swapper/008:34:360
248599880,24rtkit-daemon0-21swapper/206:41:423
1876899884,77cyclictest0-21swapper/009:25:210
1876899884,76cyclictest0-21swapper/008:04:340
1876899884,52cyclictest0-21swapper/005:39:100
1876899883,10cyclictest12892-21unixbench_multi10:24:330
248599870,4rtkit-daemon2484-21rtkit-daemon10:33:262
1876899874,76cyclictest0-21swapper/010:29:280
1876899874,75cyclictest0-21swapper/009:49:140
1876899874,75cyclictest0-21swapper/009:14:230
1876899874,75cyclictest0-21swapper/008:44:180
1876899874,75cyclictest0-21swapper/007:49:220
1876899874,67cyclictest0-21swapper/008:49:150
1876899874,51cyclictest0-21swapper/007:19:370
248599860,23rtkit-daemon0-21swapper/205:58:363
1876899864,76cyclictest0-21swapper/009:02:070
1876899864,52cyclictest0-21swapper/008:26:410
1876899864,52cyclictest0-21swapper/007:24:360
1876899864,17cyclictest0-21swapper/005:54:200
68552850,4sleep3361ktimersoftd/308:39:393
248599850,23rtkit-daemon0-21swapper/207:05:343
1876899855,70cyclictest0-21swapper/005:14:110
1876899854,75cyclictest0-21swapper/009:57:590
1876899854,75cyclictest0-21swapper/009:57:590
1876899854,73cyclictest0-21swapper/010:10:120
1876899853,9cyclictest0-21swapper/010:07:140
1876899853,10cyclictest654-21munin-node09:19:240
1876899853,10cyclictest654-21munin-node09:19:240
1876899844,73cyclictest0-21swapper/010:39:300
1876899844,73cyclictest0-21swapper/009:59:110
1876899843,57cyclictest25643-21munin-node07:34:270
248599830,27rtkit-daemon0-21swapper/206:59:343
1876899834,9cyclictest0-21swapper/008:43:380
1876899833,73cyclictest0-21swapper/005:52:250
248599820,28rtkit-daemon0-21swapper/210:14:343
1876899824,71cyclictest0-21swapper/007:54:260
1876899824,71cyclictest0-21swapper/007:54:260
1876899824,70cyclictest0-21swapper/009:09:180
1876899824,70cyclictest0-21swapper/006:14:190
248599810,6rtkit-daemon2484-21rtkit-daemon08:09:242
1876899814,10cyclictest0-21swapper/006:29:200
1876899813,8cyclictest2759-21sh07:47:040
1876899813,6cyclictest610-21latency_hist05:44:100
1876899813,50cyclictest0-21swapper/007:14:060
248599800,26rtkit-daemon0-21swapper/206:38:503
248599800,26rtkit-daemon0-21swapper/206:38:503
248599800,26rtkit-daemon0-21swapper/206:18:583
248599800,25rtkit-daemon10568-21munin-node06:04:293
248599800,25rtkit-daemon0-21swapper/208:45:223
1876899804,69cyclictest0-21swapper/006:59:250
1876899804,69cyclictest0-21swapper/005:29:310
1876899804,13cyclictest0-21swapper/006:09:250
1876899804,12cyclictest0-21swapper/008:54:350
248599790,28rtkit-daemon0-21swapper/206:09:293
248599790,26rtkit-daemon0-21swapper/206:24:283
248599790,26rtkit-daemon0-21swapper/206:19:433
248599790,25rtkit-daemon0-21swapper/210:11:423
248599790,25rtkit-daemon0-21swapper/208:31:233
248599790,23rtkit-daemon0-21swapper/208:10:543
248599790,19rtkit-daemon0-21swapper/206:49:423
1876899794,49cyclictest0-21swapper/005:59:250
1876899793,70cyclictest0-21swapper/006:24:210
248599780,5rtkit-daemon2484-21rtkit-daemon09:54:572
248599780,5rtkit-daemon2484-21rtkit-daemon09:54:572
248599780,27rtkit-daemon0-21swapper/207:16:183
248599780,27rtkit-daemon0-21swapper/207:16:183
248599780,26rtkit-daemon0-21swapper/207:21:263
248599780,26rtkit-daemon0-21swapper/207:11:413
248599780,26rtkit-daemon0-21swapper/206:45:423
248599780,25rtkit-daemon0-21swapper/206:54:123
1876899784,68cyclictest0-21swapper/007:04:170
1876899783,68cyclictest0-21swapper/006:34:290
1876899783,68cyclictest0-21swapper/006:34:290
1876899783,56cyclictest12736-21latency_hist06:09:090
248599770,25rtkit-daemon0-21swapper/209:55:423
248599770,25rtkit-daemon0-21swapper/209:55:423
248599770,25rtkit-daemon0-21swapper/206:30:283
248599770,25rtkit-daemon0-21swapper/205:50:523
248599770,24rtkit-daemon0-21swapper/207:28:103
248599770,23rtkit-daemon0-21swapper/210:19:043
248599770,23rtkit-daemon0-21swapper/207:29:183
1876899764,66cyclictest0-21swapper/006:49:190
1877299753,64cyclictest0-21swapper/207:49:292
1876899758,8cyclictest23759-21munin-node05:24:450
1876899753,53cyclictest0-21swapper/006:44:210
1876899744,63cyclictest0-21swapper/006:39:400
1876899744,63cyclictest0-21swapper/005:19:390
1876899744,56cyclictest0-21swapper/005:14:410
248599730,22rtkit-daemon0-21swapper/210:33:563
1876899733,9cyclictest0-21swapper/006:21:470
18768997216,40cyclictest0-21swapper/005:49:100
227162670,7sleep322717-21ps05:19:383
102772677,6sleep10-21swapper/109:34:171
265162666,9sleep126576-21df_abs05:29:241
1877399668,40cyclictest34-21rcuc/308:02:143
18772996633,27cyclictest27949-21fschecks_time08:24:202
248599640,6rtkit-daemon2484-21rtkit-daemon09:22:131
248599640,6rtkit-daemon2484-21rtkit-daemon09:22:131
18772996324,24cyclictest11245-21sh07:59:242
18771996331,11cyclictest11526-21cat08:49:031
18773996225,11cyclictest2794-21load08:34:283
18773996225,11cyclictest2794-21load08:34:283
248599610,5rtkit-daemon0-21swapper/310:13:112
1877199614,48cyclictest0-21swapper/107:44:531
137892613,51sleep10-21swapper/110:27:301
248599600,5rtkit-daemon2484-21rtkit-daemon08:29:081
248599600,4rtkit-daemon2484-21rtkit-daemon08:43:151
217072603,49sleep10-21swapper/107:28:351
208942603,49sleep20-21swapper/208:14:202
1877399602,43cyclictest0-21swapper/310:00:143
1877299603,13cyclictest0-21swapper/208:49:272
248599590,4rtkit-daemon2484-21rtkit-daemon09:59:051
1877399596,38cyclictest4061-21iostat09:24:223
1877399595,34cyclictest0-21swapper/308:14:153
1877399594,36cyclictest0-21swapper/309:47:073
1877299594,13cyclictest0-21swapper/208:34:282
1877299594,13cyclictest0-21swapper/208:34:282
18771995911,26cyclictest0-21swapper/110:09:011
1877399584,29cyclictest0-21swapper/308:58:523
1877399584,27cyclictest0-21swapper/310:04:303
1877299583,13cyclictest0-21swapper/208:04:182
1877299583,12cyclictest0-21swapper/206:04:382
18771995819,30cyclictest5102-21fschecks_time10:14:161
18771995814,24cyclictest19929-21sendmail_mailst08:59:311
178292583,10sleep10-21swapper/108:57:481
1877399574,29cyclictest0-21swapper/307:58:533
1877399574,29cyclictest0-21swapper/307:58:533
18773995722,12cyclictest0-21swapper/309:17:573
18773995721,13cyclictest0-21swapper/308:09:053
1877299574,12cyclictest0-21swapper/209:29:172
1877299573,37cyclictest0-21swapper/209:26:392
1877299573,12cyclictest0-21swapper/209:39:192
18772995727,24cyclictest8102-21cat08:44:032
1877399565,28cyclictest0-21swapper/308:59:283
1877399565,28cyclictest0-21swapper/307:34:163
1877399565,28cyclictest0-21swapper/305:34:293
1877399565,27cyclictest0-21swapper/310:25:103
1877399565,25cyclictest624-21diskstats07:44:213
1877399564,28cyclictest0-21swapper/309:29:223
1877399564,28cyclictest0-21swapper/309:09:343
1877399564,28cyclictest0-21swapper/309:04:143
1877399564,28cyclictest0-21swapper/305:29:383
1877399564,27cyclictest0-21swapper/308:29:043
1877399564,27cyclictest0-21swapper/308:21:013
1877399564,27cyclictest0-21swapper/307:39:163
1877399563,34cyclictest34-21rcuc/308:49:153
1877299564,13cyclictest0-21swapper/207:54:272
1877299564,13cyclictest0-21swapper/207:54:272
18772995638,11cyclictest21548-21crond09:04:012
1877299563,12cyclictest0-21swapper/207:26:392
1877299563,11cyclictest0-21swapper/208:30:472
1877199564,44cyclictest0-21swapper/108:09:261
18771995636,13cyclictest0-21swapper/110:14:001
18771995615,32cyclictest0-21swapper/109:44:161
248599550,4rtkit-daemon2484-21rtkit-daemon08:26:381
248599550,4rtkit-daemon2484-21rtkit-daemon07:19:181
234022553,7sleep323404-21ssh10:40:433
1877399556,25cyclictest6697-21munin-run07:54:053
18772995538,10cyclictest21697-21cpuspeed_turbos05:19:242
1877299553,36cyclictest0-21swapper/209:12:562
1877299553,12cyclictest0-21swapper/208:54:152
1877199554,43cyclictest0-21swapper/109:49:251
18771995535,14cyclictest0-21swapper/107:39:341
1877199553,26cyclictest0-21swapper/110:42:161
18771995512,27cyclictest0-21swapper/108:19:531
55732543,12sleep20-21swapper/206:59:302
285452543,44sleep10-21swapper/109:14:091
1877399544,27cyclictest0-21swapper/309:34:143
1877299545,11cyclictest0-21swapper/209:36:492
1877299544,11cyclictest0-21swapper/210:18:302
1877199544,41cyclictest0-21swapper/107:34:201
18771995436,10cyclictest13849-21fschecks_time09:39:191
18771995432,14cyclictest0-21swapper/107:49:221
18771995422,14cyclictest0-21swapper/110:34:161
18771995422,14cyclictest0-21swapper/110:34:161
87382533,43sleep10-21swapper/109:31:231
42062532,10sleep10-21swapper/108:37:121
42062532,10sleep10-21swapper/108:37:121
30122534,43sleep20-21swapper/207:47:592
193432533,43sleep10-21swapper/106:19:421
18773995333,11cyclictest3168-21crond05:49:093
1877299535,40cyclictest281ktimersoftd/209:14:162
18772995337,10cyclictest29993-21grep07:39:242
1877299533,13cyclictest0-21swapper/208:19:452
1877199534,40cyclictest22237-21sed05:19:291
1877199534,27cyclictest0-21swapper/110:33:061
18771995321,12cyclictest0-21swapper/107:54:341
18771995321,12cyclictest0-21swapper/107:54:341
127062532,11sleep10-21swapper/106:08:501
55592522,11sleep10-21swapper/109:27:031
1877299524,29cyclictest0-21swapper/209:59:242
1877299524,15cyclictest0-21swapper/209:49:422
1877299523,43cyclictest0-21swapper/207:29:262
1877299523,42cyclictest0-21swapper/209:04:062
1877199525,29cyclictest0-21swapper/109:54:231
1877199525,29cyclictest0-21swapper/109:54:231
18771995234,12cyclictest0-21swapper/108:15:001
18771995213,22cyclictest0-21swapper/110:19:291
159942522,11sleep10-21swapper/108:06:041
14232523,42sleep10-21swapper/106:49:411
135492523,7sleep113608-21grep06:09:271
1877299514,27cyclictest0-21swapper/207:14:072
1877299514,26cyclictest0-21swapper/209:46:222
18772995135,9cyclictest25769-21grep06:34:272
18772995135,9cyclictest25769-21grep06:34:272
1877299513,12cyclictest0-21swapper/208:44:372
1877199515,28cyclictest0-21swapper/109:04:201
18771995134,11cyclictest0-21swapper/108:00:001
18771995132,11cyclictest29441-21crond06:44:081
174352512,11sleep10-21swapper/106:18:131
114322513,42sleep10-21swapper/107:13:191
103152513,43sleep10-21swapper/106:04:031
5852503,40sleep10-21swapper/105:43:591
18773995032,12cyclictest25423-21unixbench-2d05:24:423
18773995020,13cyclictest0-21swapper/309:39:283
18772995034,9cyclictest3739-21grep05:49:252
1877299503,42cyclictest0-21swapper/210:43:592
1877299503,40cyclictest0-21swapper/210:04:312
1877299503,29cyclictest0-21swapper/206:09:322
1877299503,28cyclictest0-21swapper/210:27:422
1877299503,27cyclictest0-21swapper/205:43:202
1877299502,43cyclictest0-21swapper/206:47:062
18772995012,12cyclictest0-21swapper/207:38:092
1877199506,26cyclictest5886-21aten2.4-expect05:54:211
1877199506,26cyclictest0-21swapper/107:17:331
1877199506,26cyclictest0-21swapper/107:17:331
1877199504,28cyclictest0-21swapper/108:49:331
281662492,10sleep20-21swapper/205:32:322
243532492,12sleep10-21swapper/106:30:021
210322492,10sleep20-21swapper/205:17:522
208852492,11sleep10-21swapper/105:15:581
1877399494,27cyclictest0-21swapper/309:21:423
1877399494,27cyclictest0-21swapper/309:21:423
1877299494,28cyclictest0-21swapper/205:54:402
1877299494,27cyclictest0-21swapper/207:20:112
1877299494,27cyclictest0-21swapper/206:39:182
18772994932,10cyclictest8108-21cpuspeed_turbos10:19:132
1877299493,28cyclictest0-21swapper/207:17:442
1877299493,28cyclictest0-21swapper/207:17:442
1877299493,28cyclictest0-21swapper/205:34:322
18772994919,13cyclictest0-21swapper/210:38:062
18772994919,13cyclictest0-21swapper/210:38:062
1877199494,28cyclictest0-21swapper/107:04:061
247882483,37sleep20-21swapper/205:24:342
1877399484,27cyclictest0-21swapper/305:14:353
1877299483,27cyclictest0-21swapper/205:44:332
1877299483,26cyclictest0-21swapper/209:20:122
1877299483,26cyclictest0-21swapper/209:20:122
18772994817,12cyclictest0-21swapper/206:24:082
1877199485,26cyclictest0-21swapper/105:47:491
1877199484,37cyclictest0-21swapper/105:49:401
1877199484,27cyclictest0-21swapper/109:09:571
316352473,37sleep10-21swapper/106:46:391
18773994721,11cyclictest0-21swapper/305:39:223
1877299474,26cyclictest0-21swapper/206:54:172
1877299473,28cyclictest0-21swapper/205:59:232
18772994719,12cyclictest0-21swapper/206:14:382
18771994725,15cyclictest0-21swapper/105:34:281
42492463,37sleep10-21swapper/106:58:161
1877199465,34cyclictest0-21swapper/106:24:251
18771994627,13cyclictest0-21swapper/106:34:331
18771994627,13cyclictest0-21swapper/106:34:331
90582452,10sleep20-21swapper/207:08:282
1877199454,32cyclictest25015-21munin-node05:24:361
16282452,10sleep20-21swapper/206:52:002
1877299443,34cyclictest0-21swapper/206:33:342
1877299433,34cyclictest0-21swapper/206:24:362
90152413,32sleep10-21swapper/107:07:551
1877399393,19cyclictest18892-21cat05:14:123
1877299399,14cyclictest0-21swapper/205:14:122
18771993910,21cyclictest0-21swapper/105:14:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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