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2026-05-23 - 17:08

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 Sat May 23, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1336299994,36cyclictest0-21swapper/009:16:410
1336599987,66cyclictest0-21swapper/207:03:562
1336599975,15cyclictest0-21swapper/206:57:132
1336599975,15cyclictest0-21swapper/206:57:132
13364999615,73cyclictest1419-21runrttasks08:16:101
13364999615,73cyclictest1419-21runrttasks08:16:101
248599950,6rtkit-daemon0-21swapper/009:33:360
248599950,6rtkit-daemon0-21swapper/009:33:360
1336599944,71cyclictest0-21swapper/209:48:322
1336599944,68cyclictest0-21swapper/210:08:152
1336299944,31cyclictest0-21swapper/008:23:360
1336599934,68cyclictest0-21swapper/207:25:182
1336599924,69cyclictest0-21swapper/208:43:002
1336599924,66cyclictest0-21swapper/209:19:422
13365999218,53cyclictest0-21swapper/206:59:012
13365999212,62cyclictest0-21swapper/209:23:512
112682920,3sleep1201ktimersoftd/107:33:531
112682920,3sleep1201ktimersoftd/107:33:531
248599910,4rtkit-daemon2484-21rtkit-daemon10:07:353
1336599915,65cyclictest0-21swapper/207:13:442
1336599914,64cyclictest0-21swapper/206:44:202
13365999121,9cyclictest23273-21rm09:28:512
13365999120,53cyclictest0-21swapper/208:25:072
13365999113,13cyclictest0-21swapper/207:33:392
13365999113,13cyclictest0-21swapper/207:33:392
13365999112,12cyclictest0-21swapper/207:54:142
248599900,4rtkit-daemon2484-21rtkit-daemon09:29:063
1336599904,70cyclictest0-21swapper/206:08:322
1336599904,66cyclictest0-21swapper/208:59:262
1336599904,24cyclictest0-21swapper/209:47:012
1336599904,24cyclictest0-21swapper/209:38:042
1336599904,24cyclictest0-21swapper/209:38:042
1336599904,10cyclictest121850irq/46-eth009:38:312
1336599903,24cyclictest8720-21sed08:18:402
13365999020,52cyclictest0-21swapper/208:43:312
13365999010,65cyclictest0-21swapper/207:58:542
1336499905,77cyclictest0-21swapper/105:23:281
1336499905,50cyclictest0-21swapper/109:09:111
1336599897,67cyclictest0-21swapper/209:12:162
1336599895,66cyclictest0-21swapper/207:38:492
1336599894,65cyclictest0-21swapper/206:24:062
1336599894,26cyclictest0-21swapper/209:06:482
13365998920,49cyclictest0-21swapper/208:52:522
13365998915,13cyclictest0-21swapper/206:48:522
1336499894,78cyclictest0-21swapper/109:13:241
1336599884,24cyclictest0-21swapper/207:53:052
1336599883,25cyclictest0-21swapper/205:23:312
1336599883,24cyclictest0-21swapper/208:53:492
13365998817,48cyclictest0-21swapper/208:16:572
13365998817,48cyclictest0-21swapper/208:16:572
1336499884,77cyclictest0-21swapper/110:01:031
1336499884,76cyclictest0-21swapper/110:04:541
1336499884,76cyclictest0-21swapper/108:33:511
1336499883,61cyclictest0-21swapper/109:08:191
1336599874,74cyclictest11883-21diskstats09:13:352
1336599874,66cyclictest0-21swapper/208:09:302
1336599874,65cyclictest0-21swapper/208:03:572
1336599874,62cyclictest0-21swapper/208:29:342
1336599874,62cyclictest0-21swapper/206:33:522
1336599874,61cyclictest0-21swapper/205:52:242
1336599873,25cyclictest0-21swapper/206:18:492
13365998720,51cyclictest0-21swapper/209:53:472
13365998713,13cyclictest0-21swapper/207:44:152
1336499874,75cyclictest0-21swapper/109:37:171
1336499874,75cyclictest0-21swapper/109:37:171
1336499874,75cyclictest0-21swapper/107:27:571
1336499874,75cyclictest0-21swapper/106:52:211
1336499873,76cyclictest0-21swapper/109:31:421
1336599864,60cyclictest0-21swapper/208:34:022
1336599864,25cyclictest0-21swapper/207:28:312
13365998618,52cyclictest0-21swapper/205:09:342
1336499866,56cyclictest0-21swapper/107:53:351
1336499865,48cyclictest0-21swapper/109:46:161
1336499864,75cyclictest0-21swapper/108:44:281
1336499864,75cyclictest0-21swapper/108:28:471
1336499864,75cyclictest0-21swapper/106:58:431
1336499864,75cyclictest0-21swapper/105:48:371
1336499864,74cyclictest0-21swapper/106:13:441
1336499864,74cyclictest0-21swapper/106:13:441
1336499864,74cyclictest0-21swapper/105:09:011
1336499863,9cyclictest0-21swapper/107:12:461
1336599854,61cyclictest0-21swapper/205:13:452
1336599854,59cyclictest0-21swapper/206:41:012
13365998512,57cyclictest0-21swapper/207:08:452
1336499854,74cyclictest0-21swapper/109:39:241
1336499854,74cyclictest0-21swapper/108:05:261
1336499854,73cyclictest0-21swapper/108:53:431
1336499854,64cyclictest0-21swapper/105:28:551
1336499854,64cyclictest0-21swapper/105:28:551
1336499853,74cyclictest0-21swapper/107:51:501
248599840,5rtkit-daemon2484-21rtkit-daemon07:04:491
248599840,4rtkit-daemon2484-21rtkit-daemon07:17:561
220862840,3sleep041ktimersoftd/008:39:390
1336599844,27cyclictest0-21swapper/207:22:292
1336499844,8cyclictest14540-21proc_pri07:38:511
1336499843,8cyclictest19246-21sort09:23:431
1336499843,73cyclictest0-21swapper/106:57:031
1336499843,73cyclictest0-21swapper/106:57:031
1336599834,71cyclictest0-21swapper/206:13:412
1336599834,71cyclictest0-21swapper/206:13:412
1336599834,63cyclictest0-21swapper/210:00:302
1336499838,58cyclictest2093-21latency08:08:451
1336499834,72cyclictest0-21swapper/106:38:261
1336499834,71cyclictest0-21swapper/107:59:181
1336499834,71cyclictest0-21swapper/106:08:261
1336499834,61cyclictest0-21swapper/108:42:371
1336499833,73cyclictest0-21swapper/107:28:571
1336599824,71cyclictest0-21swapper/205:28:492
1336599824,71cyclictest0-21swapper/205:28:492
1336599824,70cyclictest0-21swapper/204:48:592
1336599824,70cyclictest0-21swapper/204:48:592
1336499824,72cyclictest0-21swapper/109:57:531
1336499824,71cyclictest0-21swapper/109:50:141
1336499824,71cyclictest0-21swapper/108:58:391
1336499824,71cyclictest0-21swapper/108:23:341
1336499823,9cyclictest1419-21runrttasks04:43:501
1336499823,8cyclictest28619-21yum08:48:551
1336599814,24cyclictest653-21chrt06:28:472
13365998125,48cyclictest1419-21runrttasks05:58:542
13365998122,52cyclictest11799-21needreboot05:43:512
1336499814,8cyclictest121850irq/46-eth006:43:441
1336499813,9cyclictest22447-21unixbench_multi04:54:021
1336499813,8cyclictest17590-21munin-node07:43:461
1336499813,7cyclictest1-21systemd06:28:371
13365998023,50cyclictest2501-21metacity06:05:242
13365998017,13cyclictest0-21swapper/205:18:522
13365998014,13cyclictest0-21swapper/204:43:532
1336499804,70cyclictest0-21swapper/105:23:421
1336499804,62cyclictest0-21swapper/105:13:461
1336499803,9cyclictest12138-21ls05:43:581
1336499803,8cyclictest1905-21ssh07:20:461
1336499803,10cyclictest0-21swapper/109:19:441
1336499794,68cyclictest0-21swapper/105:43:281
1336499794,67cyclictest0-21swapper/106:08:501
1336499794,42cyclictest0-21swapper/108:23:041
1336299794,22cyclictest0-21swapper/010:03:580
1336599784,67cyclictest0-21swapper/204:58:502
1336599783,24cyclictest0-21swapper/205:53:582
1336499784,58cyclictest0-21swapper/104:38:411
1336499783,11cyclictest0-21swapper/104:48:451
1336499783,11cyclictest0-21swapper/104:48:451
13364997813,43cyclictest0-21swapper/106:23:261
1336599774,52cyclictest0-21swapper/204:54:002
13365997717,40cyclictest0-21swapper/204:38:522
1336499776,63cyclictest0-21swapper/105:08:281
1336499774,66cyclictest0-21swapper/104:59:351
1336499774,65cyclictest0-21swapper/105:58:441
1336599764,64cyclictest0-21swapper/205:33:402
1336599764,24cyclictest0-21swapper/205:38:412
1336499763,9cyclictest6447-21cut05:33:461
1336499763,8cyclictest3058-21gltestperf06:33:441
1336499744,62cyclictest0-21swapper/106:27:241
1336599727,13cyclictest0-21swapper/204:38:302
1336599725,15cyclictest0-21swapper/205:06:452
1336499714,60cyclictest0-21swapper/105:53:591
13362997036,28cyclictest4776-21aten2.4-expect06:38:380
1336499684,58cyclictest0-21swapper/104:38:291
13362996415,30cyclictest0-21swapper/009:38:260
248599630,4rtkit-daemon2484-21rtkit-daemon08:52:383
1336699604,40cyclictest0-21swapper/307:16:133
1336299606,34cyclictest13353-21cyclictest07:56:180
248599590,4rtkit-daemon2484-21rtkit-daemon06:53:500
248599590,4rtkit-daemon2484-21rtkit-daemon06:53:500
1336299594,46cyclictest0-21swapper/007:43:380
248599580,6rtkit-daemon2484-21rtkit-daemon06:50:500
248599580,4rtkit-daemon16492-21chrt09:18:523
13366995811,28cyclictest0-21swapper/306:58:463
1336299586,41cyclictest1419-21runrttasks08:03:330
294172573,47sleep00-21swapper/006:22:500
278732574,46sleep00-21swapper/007:11:510
248599570,4rtkit-daemon2484-21rtkit-daemon07:48:550
1336299576,43cyclictest0-21swapper/008:08:430
1336299575,45cyclictest0-21swapper/007:18:580
1336299574,46cyclictest0-21swapper/009:53:310
1336299574,44cyclictest0-21swapper/009:43:390
28942567,8sleep02895-21yum-updatesd-he05:24:410
279712562,46sleep00-21swapper/005:09:050
255802564,11sleep30-21swapper/309:33:373
255802564,11sleep30-21swapper/309:33:373
1336699564,33cyclictest0-21swapper/307:46:223
13366995624,25cyclictest23841-21df_abs08:43:353
13366995620,11cyclictest0-21swapper/307:29:083
1336299564,46cyclictest0-21swapper/007:38:230
1336299564,46cyclictest0-21swapper/007:38:230
1336299564,43cyclictest0-21swapper/007:04:140
1336299564,42cyclictest0-21swapper/008:18:450
109182563,11sleep00-21swapper/006:47:290
248599550,6rtkit-daemon2484-21rtkit-daemon09:58:283
13366995516,12cyclictest2034-21grep08:58:403
1336299554,45cyclictest0-21swapper/010:02:110
1336299553,42cyclictest0-21swapper/008:28:320
13362995520,26cyclictest30996-21gltestperf08:53:390
79442544,44sleep00-21swapper/005:38:070
55652542,11sleep00-21swapper/005:33:120
55652542,11sleep00-21swapper/005:33:120
295722543,11sleep30-21swapper/305:13:523
249902543,44sleep00-21swapper/004:59:420
202632543,43sleep00-21swapper/009:25:040
153222542,46sleep00-21swapper/007:40:020
1336699545,36cyclictest12546-21ntp_states08:23:483
13366995416,22cyclictest23843-21fschecks_time04:58:463
1336299544,42cyclictest0-21swapper/008:51:210
1336299544,41cyclictest0-21swapper/009:18:320
13362995435,12cyclictest20514-21cpuspeed_turbos06:03:420
99272533,44sleep30-21swapper/309:09:223
54062533,13sleep00-21swapper/007:25:460
31472533,11sleep30-21swapper/308:09:313
283422532,44sleep00-21swapper/005:13:290
269992533,11sleep00-21swapper/006:17:300
269992533,11sleep00-21swapper/006:17:300
248599530,5rtkit-daemon2484-21rtkit-daemon08:54:003
218352533,11sleep30-21swapper/308:38:463
172932533,44sleep00-21swapper/005:55:210
1336699535,25cyclictest19398-21ntp_states09:23:463
1336699534,30cyclictest0-21swapper/308:03:213
1336699534,29cyclictest0-21swapper/309:43:183
13366995337,10cyclictest21517-21runrttasks07:48:563
13366995326,13cyclictest0-21swapper/309:53:003
13366995324,13cyclictest0-21swapper/307:08:313
1336299539,37cyclictest21425-21munin-node09:28:420
1336299534,27cyclictest0-21swapper/009:09:250
13362995334,10cyclictest30024-21cpuspeed_turbos06:23:400
13362995322,14cyclictest0-21swapper/006:03:260
119782533,9sleep312090-21hwlatdetect04:33:473
10462532,11sleep30-21swapper/309:44:133
5612522,10sleep30-21swapper/305:22:433
248599520,5rtkit-daemon2484-21rtkit-daemon08:33:533
248599520,4rtkit-daemon2484-21rtkit-daemon09:58:133
248599520,4rtkit-daemon2484-21rtkit-daemon09:14:143
180292523,43sleep30-21swapper/306:57:563
180292523,43sleep30-21swapper/306:57:563
1336699525,29cyclictest0-21swapper/307:24:453
1336699524,43cyclictest0-21swapper/307:53:363
1336699524,42cyclictest0-21swapper/308:08:163
1336699524,26cyclictest0-21swapper/306:33:373
1336299524,29cyclictest0-21swapper/005:23:270
1336299524,15cyclictest0-21swapper/008:45:030
1336299523,43cyclictest0-21swapper/006:59:070
13362995215,22cyclictest0-21swapper/004:53:450
248599510,4rtkit-daemon2484-21rtkit-daemon08:30:313
246272514,40sleep00-21swapper/006:12:380
202572513,41sleep00-21swapper/004:50:150
202572513,41sleep00-21swapper/004:50:150
201442512,43sleep00-21swapper/008:34:560
1336699514,27cyclictest0-21swapper/307:18:423
13366995120,13cyclictest0-21swapper/309:03:433
1336299515,40cyclictest0-21swapper/008:58:530
1336299514,40cyclictest0-21swapper/009:04:470
1336299514,31cyclictest0-21swapper/004:38:400
1336299514,30cyclictest0-21swapper/009:48:300
132262512,11sleep30-21swapper/307:38:353
78082503,41sleep30-21swapper/305:36:213
54962503,11sleep30-21swapper/305:32:183
54962503,11sleep30-21swapper/305:32:183
257862502,13sleep00-21swapper/005:06:430
142222503,39sleep30-21swapper/306:51:473
1336699505,28cyclictest0-21swapper/305:43:403
1336699504,28cyclictest0-21swapper/307:33:533
1336699504,28cyclictest0-21swapper/307:33:533
1336699504,27cyclictest0-21swapper/305:13:283
1336699504,25cyclictest0-21swapper/306:46:193
13366995021,12cyclictest0-21swapper/305:53:393
1336299505,37cyclictest0-21swapper/008:16:460
1336299505,37cyclictest0-21swapper/008:16:460
1336299505,26cyclictest28118-21rt-features07:58:520
1336299504,40cyclictest0-21swapper/007:28:420
1336299504,39cyclictest0-21swapper/007:13:400
1336299504,28cyclictest0-21swapper/006:28:460
1336299504,27cyclictest0-21swapper/005:48:270
131802504,39sleep00-21swapper/004:36:330
101192502,10sleep30-21swapper/305:40:203
1336699494,28cyclictest0-21swapper/307:03:453
1336699494,28cyclictest0-21swapper/306:18:453
1336699494,27cyclictest0-21swapper/308:18:453
1336699494,26cyclictest0-21swapper/308:16:413
1336699494,26cyclictest0-21swapper/308:16:413
13366994920,13cyclictest0-21swapper/306:28:573
13366994920,12cyclictest0-21swapper/304:53:513
180492483,39sleep00-21swapper/004:47:370
1336699484,28cyclictest0-21swapper/304:45:353
1336699484,27cyclictest0-21swapper/306:38:413
1336699484,27cyclictest0-21swapper/305:48:463
1336699484,27cyclictest0-21swapper/304:48:523
1336699484,27cyclictest0-21swapper/304:48:523
1336699484,27cyclictest0-21swapper/304:43:303
1336299484,27cyclictest0-21swapper/005:52:240
258622473,38sleep30-21swapper/305:07:433
1336699474,26cyclictest0-21swapper/306:04:033
1336699474,26cyclictest0-21swapper/305:24:033
1336299475,34cyclictest0-21swapper/006:33:470
101682472,11sleep00-21swapper/005:40:580
296972453,34sleep30-21swapper/306:23:333
259562443,9sleep326053-21memory06:13:503
259562443,9sleep326053-21memory06:13:503
1336699444,25cyclictest0-21swapper/306:02:323
1336699434,33cyclictest0-21swapper/306:08:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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