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2026-04-17 - 03:34

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 376 highest latencies:
System rack1slot6s.osadl.org (updated Fri Apr 17, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22578991014,28cyclictest0-21swapper/220:38:062
22578999924,51cyclictest13675-21aten2.4-expect21:32:452
22575999818,50cyclictest0-21swapper/022:03:020
2257599973,69cyclictest0-21swapper/022:27:570
2257599973,69cyclictest0-21swapper/022:27:570
2257899967,27cyclictest0-21swapper/220:57:422
2257599964,13cyclictest0-21swapper/019:58:070
2257599955,69cyclictest0-21swapper/019:29:140
2257899944,29cyclictest0-21swapper/221:17:582
2257599945,68cyclictest0-21swapper/019:40:480
2257599945,68cyclictest0-21swapper/019:40:480
2257599935,68cyclictest0-21swapper/019:33:080
2257599935,16cyclictest0-21swapper/021:51:020
2257599935,16cyclictest0-21swapper/021:51:020
302132920,3sleep041ktimersoftd/021:57:220
2257899924,28cyclictest0-21swapper/217:58:102
2257899924,27cyclictest0-21swapper/221:40:212
2257899924,13cyclictest0-21swapper/221:48:032
2257899924,13cyclictest0-21swapper/221:48:032
2257599926,13cyclictest0-21swapper/021:42:510
2257599925,14cyclictest0-21swapper/022:12:550
2257599925,14cyclictest0-21swapper/020:22:230
2257599925,14cyclictest0-21swapper/020:22:230
2257599924,64cyclictest0-21swapper/021:57:470
2257599924,64cyclictest0-21swapper/020:47:380
2257599924,12cyclictest30918-21unixbench_singl21:08:110
2257899914,30cyclictest0-21swapper/220:42:552
2257599915,69cyclictest0-21swapper/020:05:320
2257599915,11cyclictest27386-21turbostat20:17:390
2257599914,13cyclictest18019-21taskset19:15:210
2257599908,65cyclictest16755-21crond21:37:360
2257599905,15cyclictest0-21swapper/020:26:310
2257599905,14cyclictest0-21swapper/020:36:110
2257599904,14cyclictest0-21swapper/019:23:090
2257599903,72cyclictest0-21swapper/020:57:590
22575999016,45cyclictest0-21swapper/019:42:590
2257899897,21cyclictest0-21swapper/220:12:542
2257899894,28cyclictest0-21swapper/222:28:022
2257899894,28cyclictest0-21swapper/222:28:022
22578998910,13cyclictest0-21swapper/217:18:092
2257599895,14cyclictest0-21swapper/021:17:380
2257599894,76cyclictest0-21swapper/021:07:370
2257599894,76cyclictest0-21swapper/021:07:370
2257599894,14cyclictest0-21swapper/018:07:440
22575998916,66cyclictest28328-21awk22:42:340
2257899884,75cyclictest0-21swapper/221:04:372
2257899884,75cyclictest0-21swapper/221:04:372
2257899884,13cyclictest0-21swapper/220:32:492
2257599886,73cyclictest1419-21runrttasks19:50:060
2257599884,76cyclictest0-21swapper/020:38:250
2257599884,68cyclictest0-21swapper/019:19:480
2257599884,66cyclictest0-21swapper/020:10:100
22575998835,42cyclictest0-21swapper/020:28:090
2257899878,24cyclictest0-21swapper/221:42:482
2257899874,30cyclictest0-21swapper/218:18:072
2257899874,30cyclictest0-21swapper/218:18:072
2257899874,26cyclictest0-21swapper/217:29:152
2257899874,23cyclictest0-21swapper/219:58:242
22578998710,10cyclictest121850irq/46-eth021:58:552
2257599879,62cyclictest0-21swapper/021:19:200
2257599875,64cyclictest0-21swapper/020:51:330
2257599874,76cyclictest0-21swapper/022:12:260
2257599874,14cyclictest0-21swapper/017:56:080
185452870,10chrt2257799cyclictest22:27:461
185452870,10chrt2257799cyclictest22:27:461
2257899867,12cyclictest0-21swapper/219:53:082
2257899864,28cyclictest0-21swapper/222:32:512
2257899864,27cyclictest0-21swapper/222:07:532
2257899864,26cyclictest0-21swapper/221:13:002
2257899864,13cyclictest0-21swapper/219:17:582
22578998635,44cyclictest1544-21taskset22:02:442
22578998631,47cyclictest14866-21unixbench_multi19:08:172
2257899863,26cyclictest0-21swapper/220:07:532
2257899863,22cyclictest8518-21kworker/2:022:27:292
2257899863,11cyclictest0-21swapper/217:53:122
2257599868,8cyclictest0-21swapper/020:52:510
2257599865,13cyclictest0-21swapper/022:33:030
2257599864,13cyclictest0-21swapper/022:24:070
2257599863,21cyclictest0-21swapper/019:56:020
22575998615,10cyclictest121850irq/46-eth021:22:590
2257899858,13cyclictest0-21swapper/219:47:592
2257899854,74cyclictest0-21swapper/219:42:572
2257899854,25cyclictest0-21swapper/221:08:442
2257899854,13cyclictest0-21swapper/219:37:532
2257899854,13cyclictest0-21swapper/219:37:532
22578998530,48cyclictest0-21swapper/220:03:082
2257599854,74cyclictest0-21swapper/017:43:030
2257599854,70cyclictest0-21swapper/017:28:170
2257599854,61cyclictest0-21swapper/022:17:470
2257599852,74cyclictest0-21swapper/021:27:380
22575998516,52cyclictest0-21swapper/017:18:130
2257899844,25cyclictest0-21swapper/222:17:082
2257899844,23cyclictest11750-21aten_r1power_cu22:17:462
2257899844,23cyclictest0-21swapper/222:38:112
2257899844,12cyclictest0-21swapper/219:25:062
22575998432,43cyclictest1135-21netstat17:33:110
213882840,3sleep30-21swapper/318:17:443
2257899834,31cyclictest0-21swapper/221:53:112
2257899834,29cyclictest0-21swapper/218:08:152
2257899834,28cyclictest0-21swapper/219:35:362
2257899834,27cyclictest0-21swapper/217:43:072
2257899834,26cyclictest0-21swapper/217:23:102
2257899834,12cyclictest0-21swapper/221:23:032
22578998332,44cyclictest31966-21sed18:38:032
22578998330,44cyclictest19744-21tune2fs20:52:572
22578998322,10cyclictest16428-21cut19:13:012
22578998313,13cyclictest0-21swapper/220:17:512
22578998313,13cyclictest0-21swapper/220:17:512
2257599834,70cyclictest0-21swapper/018:47:570
2257899824,28cyclictest0-21swapper/218:13:052
2257899824,26cyclictest0-21swapper/220:26:212
2257899824,20cyclictest14263-21kworker/2:120:28:082
2257899823,28cyclictest0-21swapper/221:29:052
2257899823,25cyclictest0-21swapper/219:28:572
22578998215,9cyclictest12247-21kworker/2:120:48:112
22575998228,47cyclictest17095-21cpuspeed_turbos18:07:570
22575998225,49cyclictest27911-21grep17:23:000
2257599814,68cyclictest0-21swapper/017:58:000
2257599813,71cyclictest0-21swapper/021:41:070
22575998118,55cyclictest9215-21gltestperf18:58:010
22575998118,55cyclictest9215-21gltestperf18:58:010
2257899804,30cyclictest0-21swapper/218:33:102
2257899804,12cyclictest0-21swapper/218:23:042
2257899794,29cyclictest0-21swapper/218:48:022
22578997925,47cyclictest8357-21munin-node18:57:532
22578997925,47cyclictest8357-21munin-node18:57:532
2257599795,12cyclictest1419-21runrttasks18:55:480
2257599795,12cyclictest1419-21runrttasks18:55:480
2257599794,68cyclictest0-21swapper/018:22:570
2257599794,67cyclictest11097-21grep19:02:530
2257599794,67cyclictest0-21swapper/017:48:010
22579997828,24cyclictest18387-21gltestperf20:02:593
2257599787,60cyclictest0-21swapper/018:42:440
2257599786,13cyclictest1419-21runrttasks18:41:460
2257599785,64cyclictest0-21swapper/017:37:580
2257599785,64cyclictest0-21swapper/017:37:580
22575997826,44cyclictest0-21swapper/018:22:450
22575997826,44cyclictest0-21swapper/018:22:450
2257899774,29cyclictest0-21swapper/219:02:512
22575997724,46cyclictest29199-21df_abs18:32:590
277932760,4sleep1201ktimersoftd/119:28:121
22578997628,8cyclictest16042-21grep18:03:172
2257599764,65cyclictest0-21swapper/017:13:080
2257599764,14cyclictest1419-21runrttasks18:28:060
248599750,6rtkit-daemon0-21swapper/119:25:591
2257899754,29cyclictest0-21swapper/218:53:042
2257899754,29cyclictest0-21swapper/218:53:042
2257599755,15cyclictest0-21swapper/019:09:300
2257899744,16cyclictest0-21swapper/217:32:572
2257899743,23cyclictest0-21swapper/218:42:582
2257599747,13cyclictest0-21swapper/018:12:590
2257899733,30cyclictest0-21swapper/217:12:562
2257899733,24cyclictest0-21swapper/217:38:062
2257899733,24cyclictest0-21swapper/217:38:062
248599720,8rtkit-daemon0-21swapper/320:41:193
2257899723,23cyclictest0-21swapper/218:28:092
2257899723,23cyclictest0-21swapper/217:47:582
248599690,7rtkit-daemon2484-21rtkit-daemon21:19:403
248599690,3rtkit-daemon0-21swapper/318:42:013
2257599694,15cyclictest0-21swapper/017:12:470
248599670,7rtkit-daemon0-21swapper/320:13:053
223482670,4sleep334-21rcuc/319:22:423
248599650,7rtkit-daemon0-21swapper/318:48:313
248599650,6rtkit-daemon0-21swapper/321:39:463
248599650,3rtkit-daemon0-21swapper/321:05:033
248599650,3rtkit-daemon0-21swapper/321:05:033
248599640,8rtkit-daemon0-21swapper/319:09:003
2257999644,41cyclictest0-21swapper/318:58:083
2257999644,41cyclictest0-21swapper/318:58:083
2257999644,39cyclictest0-21swapper/321:46:123
22579996431,12cyclictest17581-21tail18:08:023
22577996445,13cyclictest13283-21switchtime22:18:061
248599630,9rtkit-daemon0-21swapper/317:36:483
248599630,8rtkit-daemon0-21swapper/322:01:013
248599630,8rtkit-daemon0-21swapper/318:35:463
248599630,8rtkit-daemon0-21swapper/317:14:123
248599630,7rtkit-daemon0-21swapper/321:10:403
248599630,7rtkit-daemon0-21swapper/320:46:193
248599630,7rtkit-daemon0-21swapper/320:19:123
248599630,7rtkit-daemon0-21swapper/320:19:123
248599630,7rtkit-daemon0-21swapper/319:37:443
248599630,7rtkit-daemon0-21swapper/319:37:443
248599630,5rtkit-daemon0-21swapper/319:53:063
2257799634,52cyclictest0-21swapper/120:57:241
248599620,9rtkit-daemon0-21swapper/322:33:523
248599620,9rtkit-daemon0-21swapper/321:00:403
248599620,9rtkit-daemon0-21swapper/319:48:213
248599620,9rtkit-daemon0-21swapper/319:16:153
248599620,9rtkit-daemon0-21swapper/317:54:103
248599620,8rtkit-daemon0-21swapper/320:11:273
248599620,8rtkit-daemon0-21swapper/319:06:523
248599620,8rtkit-daemon0-21swapper/318:44:463
248599620,8rtkit-daemon0-21swapper/317:23:043
248599620,7rtkit-daemon0-21swapper/322:12:453
248599620,7rtkit-daemon0-21swapper/321:28:543
248599620,7rtkit-daemon0-21swapper/319:37:293
248599620,7rtkit-daemon0-21swapper/318:18:173
248599620,7rtkit-daemon0-21swapper/318:18:173
248599620,6rtkit-daemon0-21swapper/320:01:203
248599620,6rtkit-daemon0-21swapper/319:46:213
248599620,6rtkit-daemon0-21swapper/318:28:313
248599620,4rtkit-daemon0-21swapper/318:03:253
248599620,3rtkit-daemon0-21swapper/322:08:303
248599610,9rtkit-daemon0-21swapper/321:16:473
248599610,9rtkit-daemon0-21swapper/317:28:193
248599610,8rtkit-daemon0-21swapper/322:20:373
248599610,8rtkit-daemon0-21swapper/321:23:403
248599610,8rtkit-daemon0-21swapper/320:54:033
248599610,8rtkit-daemon0-21swapper/318:25:173
248599610,7rtkit-daemon0-21swapper/322:03:163
248599610,7rtkit-daemon0-21swapper/321:49:463
248599610,7rtkit-daemon0-21swapper/321:49:463
248599610,7rtkit-daemon0-21swapper/320:49:333
248599610,7rtkit-daemon0-21swapper/317:38:333
248599610,7rtkit-daemon0-21swapper/317:38:333
248599610,7rtkit-daemon0-21swapper/317:19:343
248599610,6rtkit-daemon0-21swapper/320:23:273
248599610,4rtkit-daemon0-21swapper/319:32:213
248599610,3rtkit-daemon0-21swapper/322:29:073
248599610,3rtkit-daemon0-21swapper/322:29:073
248599610,3rtkit-daemon0-21swapper/322:25:073
248599610,3rtkit-daemon0-21swapper/321:57:313
248599610,3rtkit-daemon0-21swapper/320:28:193
248599610,3rtkit-daemon0-21swapper/318:54:153
248599610,3rtkit-daemon0-21swapper/318:54:153
248599610,10rtkit-daemon0-21swapper/321:33:393
248599600,6rtkit-daemon0-21swapper/319:23:523
248599600,6rtkit-daemon0-21swapper/318:00:333
248599600,4rtkit-daemon0-21swapper/320:32:493
2257799604,48cyclictest0-21swapper/121:38:371
22577996014,40cyclictest27232-21runrttasks20:17:071
248599590,9rtkit-daemon0-21swapper/322:42:293
24472590,4sleep12562-21munin-node17:37:571
24472590,4sleep12562-21munin-node17:37:571
2257799593,50cyclictest0-21swapper/120:38:581
2257799593,49cyclictest0-21swapper/119:57:571
22577995912,41cyclictest15301-21diskmemload20:07:461
2257799585,46cyclictest32051-21taskset17:32:081
2257799584,47cyclictest0-21swapper/121:52:541
2257799583,48cyclictest0-21swapper/121:06:271
2257799583,48cyclictest0-21swapper/121:06:271
2257799583,22cyclictest0-21swapper/121:19:011
2257799574,46cyclictest0-21swapper/120:58:011
2257799573,17cyclictest0-21swapper/122:10:561
2257799566,44cyclictest0-21swapper/122:05:461
2257799566,43cyclictest0-21swapper/121:47:461
2257799566,43cyclictest0-21swapper/121:47:461
2257799565,44cyclictest0-21swapper/120:44:121
2257799565,43cyclictest0-21swapper/120:48:001
2257799564,45cyclictest32713-21timerwakeupswit20:23:121
2257799564,45cyclictest0-21swapper/120:19:421
2257799564,45cyclictest0-21swapper/120:19:421
2257799554,44cyclictest0-21swapper/117:58:011
22577995538,11cyclictest28495-21systemd-cgroups18:32:441
2257799553,45cyclictest0-21swapper/119:19:001
2257799553,44cyclictest0-21swapper/121:43:081
2257799553,44cyclictest0-21swapper/120:33:131
2257799553,44cyclictest0-21swapper/119:48:081
2257799553,18cyclictest0-21swapper/122:38:101
2257799544,43cyclictest16752-21ssh21:37:351
2257799544,43cyclictest0-21swapper/119:33:051
2257799543,44cyclictest0-21swapper/119:14:451
2257799535,40cyclictest29296-21munin-node18:33:011
2257799534,42cyclictest3168-21iostat20:28:021
2257799534,15cyclictest0-21swapper/122:36:221
2257799533,45cyclictest0-21swapper/120:07:401
2257799533,43cyclictest0-21swapper/119:55:251
90542522,11sleep30-21swapper/317:48:563
2257799525,41cyclictest16255-21latency22:22:581
2257799525,40cyclictest17081-21cpuspeed_turbos18:07:571
2257799525,40cyclictest0-21swapper/117:57:451
2257799524,41cyclictest0-21swapper/119:41:231
2257799524,41cyclictest0-21swapper/119:41:231
2257799523,17cyclictest0-21swapper/117:52:411
2257799523,14cyclictest0-21swapper/122:13:041
68212513,10sleep30-21swapper/317:45:533
2257799515,40cyclictest2001-21munin-node18:43:041
2257799514,41cyclictest0-21swapper/121:07:491
2257799514,40cyclictest0-21swapper/119:42:551
2257799514,18cyclictest0-21swapper/121:31:221
22577995133,12cyclictest0-21swapper/121:22:591
2257799513,42cyclictest0-21swapper/118:03:121
2257799513,41cyclictest0-21swapper/117:13:091
2257799504,39cyclictest0-21swapper/121:12:541
2257799503,41cyclictest0-21swapper/121:57:481
2257799495,38cyclictest25622-21grep18:23:161
2257799494,39cyclictest3636-21aten2.4-expect18:47:521
2257799493,41cyclictest0-21swapper/119:09:031
22577994927,17cyclictest0-21swapper/117:33:541
2257799484,17cyclictest0-21swapper/118:57:441
2257799484,17cyclictest0-21swapper/118:57:441
2257799475,36cyclictest21030-21sshd18:14:051
2257799474,36cyclictest0-21swapper/118:57:411
2257799474,36cyclictest0-21swapper/118:57:411
2257799473,38cyclictest0-21swapper/119:02:541
2257799473,38cyclictest0-21swapper/118:41:401
2257799473,38cyclictest0-21swapper/117:23:411
2257799473,38cyclictest0-21swapper/117:18:351
2257799473,37cyclictest0-21swapper/118:17:531
2257799473,37cyclictest0-21swapper/118:17:531
2257799463,37cyclictest0-21swapper/117:47:371
221742424,6sleep10-21swapper/117:08:161
2257999418,22cyclictest0-21swapper/317:12:473
222482414,30sleep20-21swapper/217:09:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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