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2026-08-04 - 01:06

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 03, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
219499940,4rtkit-daemon2193-21rtkit-daemon11:01:150
219499910,5rtkit-daemon2193-21rtkit-daemon09:12:340
219499900,6rtkit-daemon0-21swapper/107:32:451
219499900,5rtkit-daemon2193-21rtkit-daemon10:27:311
219499890,5rtkit-daemon2193-21rtkit-daemon10:43:300
219499890,5rtkit-daemon2193-21rtkit-daemon09:08:420
219499880,4rtkit-daemon2193-21rtkit-daemon09:54:400
219499880,4rtkit-daemon2193-21rtkit-daemon09:54:400
219499870,4rtkit-daemon2193-21rtkit-daemon09:52:020
219499870,4rtkit-daemon2193-21rtkit-daemon09:43:330
219499870,4rtkit-daemon2193-21rtkit-daemon09:41:250
219499870,4rtkit-daemon2193-21rtkit-daemon06:50:320
219499860,4rtkit-daemon2193-21rtkit-daemon10:49:530
219499860,4rtkit-daemon2193-21rtkit-daemon10:09:090
219499840,5rtkit-daemon18-21rcuc/107:52:451
219499820,7rtkit-daemon0-21swapper/011:32:281
219499820,4rtkit-daemon2193-21rtkit-daemon08:31:360
219499810,5rtkit-daemon15-21rcuc/008:43:281
219499800,7rtkit-daemon4117-21unixbench_singl07:28:011
219499800,6rtkit-daemon32333-21gltestperf08:22:431
219499790,7rtkit-daemon0-21swapper/009:34:562
219499790,4rtkit-daemon2193-21rtkit-daemon11:28:140
219499780,8rtkit-daemon0-21swapper/006:33:251
219499780,8rtkit-daemon0-21swapper/006:33:251
219499780,6rtkit-daemon0-21swapper/007:17:231
219499780,4rtkit-daemon0-21swapper/110:22:311
219499770,7rtkit-daemon0-21swapper/010:19:092
219499770,7rtkit-daemon0-21swapper/010:16:241
219499750,8rtkit-daemon0-21swapper/008:02:071
219499750,8rtkit-daemon0-21swapper/008:02:071
219499740,7rtkit-daemon0-21swapper/010:57:301
219499740,6rtkit-daemon0-21swapper/009:31:561
219499720,8rtkit-daemon0-21swapper/009:52:472
219499720,8rtkit-daemon0-21swapper/009:52:472
219499720,8rtkit-daemon0-21swapper/009:19:262
219499720,8rtkit-daemon0-21swapper/009:19:262
219499720,5rtkit-daemon15-21rcuc/010:37:311
219499720,18rtkit-daemon0-21swapper/007:21:161
219499720,18rtkit-daemon0-21swapper/007:21:161
219499700,8rtkit-daemon0-21swapper/010:32:381
219499700,8rtkit-daemon0-21swapper/010:32:381
219499700,8rtkit-daemon0-21swapper/010:26:542
219499700,11rtkit-daemon15-21rcuc/010:04:471
219499690,9rtkit-daemon0-21swapper/006:45:021
219499690,6rtkit-daemon0-21swapper/011:00:522
219499690,6rtkit-daemon0-21swapper/008:30:512
219499690,5rtkit-daemon2193-21rtkit-daemon08:53:502
219499690,5rtkit-daemon2193-21rtkit-daemon08:26:212
219499690,4rtkit-daemon2193-21rtkit-daemon10:57:002
219499690,4rtkit-daemon2193-21rtkit-daemon09:42:402
219499690,12rtkit-daemon15-21rcuc/008:19:591
219499680,6rtkit-daemon32043-21yum-updatesd-he10:48:231
219499680,5rtkit-daemon6441-21ssh09:22:261
219499680,5rtkit-daemon2193-21rtkit-daemon09:40:102
219499680,5rtkit-daemon2193-21rtkit-daemon08:50:352
219499680,5rtkit-daemon21260-21diskmemload09:41:551
219499680,5rtkit-daemon21260-21diskmemload08:30:361
219499680,5rtkit-daemon13761-21yum-updatesd-he07:48:301
219499680,4rtkit-daemon2193-21rtkit-daemon06:23:032
2852599676,44cyclictest0-21swapper/109:07:361
219499670,8rtkit-daemon0-21swapper/006:52:541
219499670,7rtkit-daemon0-21swapper/011:17:291
219499670,7rtkit-daemon0-21swapper/006:25:411
219499670,7rtkit-daemon0-21swapper/006:14:481
219499670,6rtkit-daemon0-21swapper/006:13:182
219499670,5rtkit-daemon23292-21unixbench_singl08:07:591
219499670,4rtkit-daemon2193-21rtkit-daemon10:40:162
219499670,11rtkit-daemon2193-21rtkit-daemon10:07:543
219499660,9rtkit-daemon0-21swapper/010:55:301
219499660,9rtkit-daemon0-21swapper/008:05:591
219499660,8rtkit-daemon0-21swapper/010:07:321
219499660,8rtkit-daemon0-21swapper/009:59:401
219499660,8rtkit-daemon0-21swapper/006:18:331
219499660,7rtkit-daemon0-21swapper/011:05:071
219499660,7rtkit-daemon0-21swapper/010:46:081
219499660,7rtkit-daemon0-21swapper/010:21:311
219499660,7rtkit-daemon0-21swapper/007:03:021
219499660,6rtkit-daemon0-21swapper/011:22:441
219499660,6rtkit-daemon0-21swapper/009:45:481
219499660,6rtkit-daemon0-21swapper/008:15:141
219499660,5rtkit-daemon25018-21rm09:01:041
219499660,5rtkit-daemon1124-21snmpd07:42:451
219499660,11rtkit-daemon15-21rcuc/008:40:131
219499660,11rtkit-daemon15-21rcuc/008:40:131
219499660,11rtkit-daemon0-21swapper/011:11:521
299842653,54sleep30-21swapper/308:18:023
28526996546,13cyclictest0-21swapper/209:27:502
219499650,8rtkit-daemon0-21swapper/007:41:231
219499650,7rtkit-daemon0-21swapper/009:52:401
219499650,7rtkit-daemon0-21swapper/009:52:401
219499650,7rtkit-daemon0-21swapper/009:32:411
219499650,7rtkit-daemon0-21swapper/009:06:271
219499650,7rtkit-daemon0-21swapper/007:22:531
219499650,7rtkit-daemon0-21swapper/007:11:091
219499650,6rtkit-daemon1124-21snmpd06:52:091
219499650,5rtkit-daemon1828-21sh09:13:341
219499650,10rtkit-daemon0-21swapper/008:52:051
28526996444,13cyclictest0-21swapper/209:47:322
219499640,8rtkit-daemon0-21swapper/008:34:051
219499640,8rtkit-daemon0-21swapper/006:09:041
219499640,7rtkit-daemon0-21swapper/011:14:141
219499640,7rtkit-daemon0-21swapper/006:57:471
219499640,7rtkit-daemon0-21swapper/006:39:251
219499640,6rtkit-daemon0-21swapper/008:54:571
219499640,4rtkit-daemon2193-21rtkit-daemon11:26:593
219499640,11rtkit-daemon2193-21rtkit-daemon09:11:493
219499630,8rtkit-daemon0-21swapper/009:18:491
219499630,8rtkit-daemon0-21swapper/009:18:491
219499630,13rtkit-daemon2193-21rtkit-daemon09:38:403
219499630,12rtkit-daemon2193-21rtkit-daemon09:43:033
28527996243,13cyclictest0-21swapper/308:58:463
28526996242,13cyclictest0-21swapper/210:02:352
2852499624,14cyclictest0-21swapper/009:30:140
219499620,6rtkit-daemon0-21swapper/006:29:181
219499620,10rtkit-daemon2193-21rtkit-daemon08:53:203
219499610,7rtkit-daemon0-21swapper/011:30:061
219499610,7rtkit-daemon0-21swapper/009:47:331
219499610,5rtkit-daemon2193-21rtkit-daemon08:50:053
28526996040,13cyclictest0-21swapper/210:32:512
28526996040,13cyclictest0-21swapper/210:32:512
28526996039,14cyclictest0-21swapper/207:02:482
28526996039,13cyclictest0-21swapper/208:42:542
2852499604,41cyclictest0-21swapper/008:37:510
2852499604,41cyclictest0-21swapper/008:37:510
2852799594,46cyclictest0-21swapper/311:32:463
28526995941,11cyclictest909-21crond11:37:162
28526995930,13cyclictest0-21swapper/208:32:372
2852499594,40cyclictest0-21swapper/011:02:430
219499590,6rtkit-daemon2193-21rtkit-daemon09:07:043
219499590,5rtkit-daemon2193-21rtkit-daemon10:27:013
219499590,5rtkit-daemon2193-21rtkit-daemon08:30:583
219499590,13rtkit-daemon2193-21rtkit-daemon11:27:362
219499590,13rtkit-daemon2193-21rtkit-daemon09:07:492
91212584,12sleep20-21swapper/209:25:582
28527995837,14cyclictest0-21swapper/310:02:413
28527995819,32cyclictest13161-21fschecks_time08:42:413
28526995843,10cyclictest0-21swapper/208:07:432
2852699584,14cyclictest0-21swapper/210:42:372
2852499583,38cyclictest16042-21ssh10:24:550
219499580,6rtkit-daemon2193-21rtkit-daemon11:01:003
219499580,6rtkit-daemon2193-21rtkit-daemon10:56:453
219499580,5rtkit-daemon2193-21rtkit-daemon09:14:113
219499580,14rtkit-daemon2193-21rtkit-daemon06:08:042
28527995724,26cyclictest0-21swapper/307:52:373
2852699578,7cyclictest281ktimersoftd/207:47:422
28526995741,9cyclictest8770-21latency11:02:422
2852699574,44cyclictest0-21swapper/209:12:412
2852499574,38cyclictest0-21swapper/011:07:390
2852499573,35cyclictest0-21swapper/008:32:330
219499570,4rtkit-daemon2193-21rtkit-daemon09:35:033
219499570,4rtkit-daemon2193-21rtkit-daemon08:25:213
307502564,13sleep30-21swapper/309:57:483
2852699567,8cyclictest26-21rcuc/210:48:352
28526995642,8cyclictest7739-21grep10:12:382
2852499566,14cyclictest0-21swapper/010:52:310
2852499564,44cyclictest0-21swapper/006:53:060
2852499564,37cyclictest21260-21diskmemload10:37:460
2852499564,35cyclictest0-21swapper/010:01:080
219499560,6rtkit-daemon2193-21rtkit-daemon06:02:493
219499560,5rtkit-daemon2193-21rtkit-daemon10:48:453
183132564,44sleep00-21swapper/011:17:360
2852799554,43cyclictest0-21swapper/311:07:383
28527995532,16cyclictest0-21swapper/309:17:453
28527995532,16cyclictest0-21swapper/309:17:453
28527995517,19cyclictest27778-21basename10:42:403
28526995539,9cyclictest25616-21munin-node09:02:482
28526995525,24cyclictest5623-21grep10:07:552
2852499554,44cyclictest0-21swapper/010:04:060
2852499554,33cyclictest0-21swapper/010:19:010
2852499554,26cyclictest0-21swapper/009:32:360
2852499553,9cyclictest1124-21snmpd11:15:480
2852499553,37cyclictest0-21swapper/009:25:380
2852499553,35cyclictest28071-21munin-node08:17:560
2852499553,34cyclictest14685-21sshd08:44:200
28524995524,12cyclictest0-21swapper/006:18:000
203152554,43sleep20-21swapper/208:02:532
28527995421,13cyclictest0-21swapper/309:47:393
28526995439,10cyclictest0-21swapper/211:21:232
28526995435,11cyclictest13503-21tr06:42:422
28526995434,13cyclictest0-21swapper/209:57:492
28526995433,13cyclictest0-21swapper/211:27:182
2852499545,43cyclictest0-21swapper/006:42:560
2852499544,24cyclictest0-21swapper/010:27:340
2852499543,31cyclictest21260-21diskmemload11:23:210
24392542,44sleep00-21swapper/007:27:390
28527995338,10cyclictest0-21swapper/310:34:343
28527995338,10cyclictest0-21swapper/310:34:343
28527995337,11cyclictest0-21swapper/308:16:383
28527995331,15cyclictest0-21swapper/310:37:343
2852699534,41cyclictest0-21swapper/211:07:482
28526995331,14cyclictest0-21swapper/208:12:492
2852699533,42cyclictest0-21swapper/206:19:592
2852499535,32cyclictest0-21swapper/011:34:370
2852499534,35cyclictest0-21swapper/008:54:360
2852499534,35cyclictest0-21swapper/008:23:340
2852499534,35cyclictest0-21swapper/008:16:120
2852499533,11cyclictest0-21swapper/009:02:370
28524995321,13cyclictest0-21swapper/007:13:000
2852799524,38cyclictest0-21swapper/311:17:273
2852799524,30cyclictest0-21swapper/309:22:393
2852799524,28cyclictest0-21swapper/311:02:373
28527995236,11cyclictest0-21swapper/311:29:273
28527995236,11cyclictest0-21swapper/308:09:403
28527995234,12cyclictest0-21swapper/310:17:523
2852699525,39cyclictest0-21swapper/208:17:462
2852699524,28cyclictest0-21swapper/210:28:182
28526995238,10cyclictest0-21swapper/209:00:422
28526995237,9cyclictest15264-21if_eth011:12:402
28526995233,11cyclictest5478-21grep07:32:422
28526995232,13cyclictest0-21swapper/206:57:502
2852499527,26cyclictest0-21swapper/010:12:430
2852499526,7cyclictest12-21rcu_preempt08:57:500
2852499524,13cyclictest0-21swapper/007:00:060
2852499523,27cyclictest0-21swapper/008:07:530
2852499523,11cyclictest17250-21chrt08:47:530
28524995221,13cyclictest0-21swapper/010:32:340
28524995221,13cyclictest0-21swapper/010:32:340
28524995221,13cyclictest0-21swapper/006:23:030
28524995210,25cyclictest0-21swapper/009:17:340
28524995210,25cyclictest0-21swapper/009:17:340
278712522,10sleep20-21swapper/207:12:422
246882522,9sleep00-21swapper/007:05:060
2852799514,29cyclictest0-21swapper/307:57:393
2852799514,29cyclictest0-21swapper/307:57:393
28527995135,10cyclictest14935-21unixbench_singl06:43:023
28527995134,10cyclictest6434-21df_abs08:32:393
28527995128,15cyclictest0-21swapper/309:52:383
28527995128,15cyclictest0-21swapper/309:52:383
2852699519,32cyclictest0-21swapper/206:28:022
2852699515,38cyclictest0-21swapper/207:23:012
2852699514,39cyclictest0-21swapper/206:37:382
28524995120,13cyclictest0-21swapper/006:12:510
219499510,5rtkit-daemon2193-21rtkit-daemon06:12:493
210022512,9sleep30-21swapper/308:04:153
138592512,43sleep00-21swapper/007:49:370
126542512,9sleep30-21swapper/306:38:563
43462502,10sleep20-21swapper/207:30:112
2852799503,29cyclictest0-21swapper/310:12:383
28527995020,13cyclictest0-21swapper/311:12:413
28527995018,26cyclictest16553-21if_eth006:47:503
2852699504,38cyclictest0-21swapper/206:52:482
2852699504,27cyclictest0-21swapper/206:07:302
2852699504,26cyclictest11469-21chrt08:39:372
2852699504,26cyclictest11469-21chrt08:39:372
28526995027,15cyclictest0-21swapper/206:47:522
2852499505,27cyclictest0-21swapper/006:33:040
2852499505,27cyclictest0-21swapper/006:33:040
2852499504,28cyclictest0-21swapper/007:57:460
2852499504,28cyclictest0-21swapper/007:57:460
2852499504,28cyclictest0-21swapper/007:42:400
2852499504,28cyclictest0-21swapper/006:27:410
2852499504,28cyclictest0-21swapper/006:07:520
2852499504,27cyclictest0-21swapper/007:56:210
2852499504,27cyclictest0-21swapper/006:42:290
28524995021,12cyclictest0-21swapper/007:07:450
191322502,9sleep30-21swapper/310:29:093
92442492,41sleep20-21swapper/207:41:442
295182492,41sleep30-21swapper/307:15:453
2852799495,14cyclictest0-21swapper/308:37:573
2852799495,14cyclictest0-21swapper/308:37:573
2852799494,38cyclictest0-21swapper/307:32:373
2852799494,27cyclictest0-21swapper/306:32:293
28527994933,11cyclictest0-21swapper/309:27:333
28527994928,14cyclictest0-21swapper/307:32:263
2852499494,28cyclictest0-21swapper/007:37:400
2852499494,28cyclictest0-21swapper/007:32:450
2852499494,27cyclictest0-21swapper/007:22:410
116262492,40sleep20-21swapper/207:46:402
28527994835,8cyclictest135822chrt07:47:573
28527994833,9cyclictest24871-21crond07:07:263
28527994832,10cyclictest18818-21gltestperf06:52:493
2852699485,35cyclictest0-21swapper/207:57:502
2852699485,35cyclictest0-21swapper/207:57:502
2852699484,27cyclictest0-21swapper/207:07:572
317042472,9sleep30-21swapper/307:18:073
317042472,9sleep30-21swapper/307:18:073
2852799474,36cyclictest0-21swapper/306:22:543
2852799474,23cyclictest0-21swapper/307:37:383
2852799473,27cyclictest0-21swapper/306:07:403
2852699474,37cyclictest0-21swapper/207:17:392
2852699474,37cyclictest0-21swapper/207:17:392
28524994718,13cyclictest0-21swapper/007:17:530
28524994718,13cyclictest0-21swapper/007:17:530
28524994717,13cyclictest0-21swapper/008:02:450
163122472,9sleep20-21swapper/207:55:312
2852799463,27cyclictest0-21swapper/307:08:213
2852799462,40cyclictest0-21swapper/306:17:533
28527994531,10cyclictest0-21swapper/307:42:403
28527994524,14cyclictest0-21swapper/307:22:573
284332454,35sleep00-21swapper/006:06:490
103232452,37sleep20-21swapper/206:34:402
103232452,37sleep20-21swapper/206:34:402
2852799444,34cyclictest0-21swapper/306:37:283
2852799444,34cyclictest0-21swapper/306:37:283
2852799444,33cyclictest0-21swapper/306:57:453
2852599416,19cyclictest0-21swapper/106:07:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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