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2026-04-07 - 11:23

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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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 Tue Apr 07, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2485991230,6rtkit-daemon0-21swapper/221:23:322
2485991230,6rtkit-daemon0-21swapper/221:23:322
248599990,7rtkit-daemon0-21swapper/118:26:011
248599990,6rtkit-daemon0-21swapper/119:51:581
248599980,6rtkit-daemon0-21swapper/119:56:051
248599980,6rtkit-daemon0-21swapper/119:56:051
248599970,7rtkit-daemon0-21swapper/118:29:231
248599920,6rtkit-daemon0-21swapper/119:57:131
1193299915,8cyclictest19738-21latency_hist22:07:000
1193299915,8cyclictest19738-21latency_hist22:07:000
1193299903,31cyclictest30272-21grep22:22:130
11932999014,12cyclictest0-21swapper/019:27:400
1193299898,21cyclictest0-21swapper/021:07:000
1193299894,78cyclictest0-21swapper/022:32:180
1193299894,33cyclictest0-21swapper/020:37:480
1193299894,33cyclictest0-21swapper/020:37:480
1193299894,27cyclictest0-21swapper/020:42:390
1193299894,27cyclictest0-21swapper/020:42:390
1193299884,31cyclictest0-21swapper/019:24:390
1193299884,26cyclictest0-21swapper/019:39:020
11932998833,48cyclictest13720-21unixbench_multi19:32:410
1193299883,24cyclictest17533-21fschecks_count17:32:270
1193299883,20cyclictest25268-21kworker/0:220:32:390
1193299875,75cyclictest0-21swapper/019:42:310
1193299874,76cyclictest0-21swapper/022:47:110
1193299874,76cyclictest0-21swapper/022:42:170
1193299874,76cyclictest0-21swapper/022:42:170
1193299874,75cyclictest0-21swapper/020:52:160
1193299874,13cyclictest0-21swapper/021:17:290
11932998713,11cyclictest0-21swapper/021:01:230
1193299864,30cyclictest0-21swapper/020:10:300
1193299864,24cyclictest0-21swapper/021:47:320
1193299864,12cyclictest0-21swapper/021:33:280
1193299864,12cyclictest0-21swapper/019:57:200
1193299863,30cyclictest0-21swapper/021:22:420
1193299863,30cyclictest0-21swapper/021:22:420
1193299863,11cyclictest0-21swapper/019:50:070
11932998610,68cyclictest0-21swapper/022:27:190
248599850,25rtkit-daemon0-21swapper/019:57:202
1193299854,31cyclictest0-21swapper/021:31:320
1193299854,12cyclictest0-21swapper/022:39:350
1193299853,10cyclictest11651-21chrt20:17:310
11932998525,53cyclictest0-21swapper/021:52:160
1193299844,27cyclictest0-21swapper/020:12:220
1193299844,16cyclictest0-21swapper/021:41:280
1193299844,12cyclictest0-21swapper/019:55:330
1193299844,12cyclictest0-21swapper/019:55:330
1193299843,29cyclictest14327-21grep20:22:220
1193299843,21cyclictest0-21swapper/020:28:550
248599830,5rtkit-daemon2484-21rtkit-daemon20:47:183
1193299839,18cyclictest0-21swapper/020:47:230
1193299834,9cyclictest25006-21grep22:12:320
1193299834,28cyclictest0-21swapper/018:28:080
1193299834,12cyclictest0-21swapper/022:07:130
1193299833,18cyclictest3468-21latency_hist20:07:050
11932998317,8cyclictest16699-21latency_hist17:32:100
248599820,5rtkit-daemon2484-21rtkit-daemon18:52:302
1193299824,32cyclictest0-21swapper/018:02:210
1193299824,30cyclictest0-21swapper/022:19:280
1193299824,12cyclictest0-21swapper/019:02:260
1193299824,12cyclictest0-21swapper/018:22:180
1193299823,6cyclictest14814-21awk21:12:010
1193299823,16cyclictest0-21swapper/018:52:400
248599810,4rtkit-daemon2484-21rtkit-daemon19:37:362
1193299814,34cyclictest0-21swapper/021:42:180
1193299814,32cyclictest0-21swapper/017:22:350
1193299814,26cyclictest0-21swapper/018:12:220
1193299814,26cyclictest0-21swapper/017:52:220
1193299814,11cyclictest0-21swapper/017:42:270
1193299813,33cyclictest0-21swapper/018:37:300
1193299813,12cyclictest744-21grep19:12:260
1193299813,12cyclictest0-21swapper/021:12:130
1193299813,11cyclictest0-21swapper/019:17:330
11932998119,10cyclictest0-21swapper/018:17:320
11932998118,14cyclictest0-21swapper/018:32:190
11932998118,14cyclictest0-21swapper/018:32:190
11932998112,11cyclictest0-21swapper/021:59:110
248599800,6rtkit-daemon2484-21rtkit-daemon20:41:332
248599800,6rtkit-daemon2484-21rtkit-daemon20:41:332
248599800,4rtkit-daemon2484-21rtkit-daemon20:06:052
1193899804,68cyclictest0-21swapper/221:47:272
1193299804,33cyclictest0-21swapper/017:47:350
1193299804,33cyclictest0-21swapper/017:47:350
248599790,5rtkit-daemon2484-21rtkit-daemon20:55:482
1193299784,12cyclictest0-21swapper/018:47:250
1193299783,34cyclictest0-21swapper/018:07:390
1193299783,33cyclictest0-21swapper/018:47:070
248599760,4rtkit-daemon2484-21rtkit-daemon20:32:342
1193299764,31cyclictest0-21swapper/018:57:300
1193899743,60cyclictest0-21swapper/221:57:002
1193299745,33cyclictest0-21swapper/017:37:380
11932997413,9cyclictest0-21swapper/019:07:230
1193299734,30cyclictest0-21swapper/017:58:210
1193899704,58cyclictest0-21swapper/222:42:272
1193899704,58cyclictest0-21swapper/222:42:272
1193899695,55cyclictest0-21swapper/220:32:032
1193899694,56cyclictest0-21swapper/222:27:212
248599680,5rtkit-daemon2484-21rtkit-daemon18:12:323
12612680,5sleep11427-21ssh20:52:041
1193899684,56cyclictest0-21swapper/222:37:212
1193899683,56cyclictest0-21swapper/219:42:152
1193899674,54cyclictest5436-21grep20:07:382
1193999664,53cyclictest0-21swapper/320:21:343
1193899664,54cyclictest0-21swapper/221:06:312
1193899664,53cyclictest0-21swapper/219:12:262
248599650,5rtkit-daemon2484-21rtkit-daemon19:07:073
1193899654,53cyclictest0-21swapper/221:07:172
1193899654,53cyclictest0-21swapper/219:27:402
1193899654,52cyclictest0-21swapper/218:02:212
1193999648,47cyclictest0-21swapper/322:06:373
1193999648,47cyclictest0-21swapper/322:06:373
11939996420,34cyclictest9903-21sendmail_mailst19:27:363
1193899646,53cyclictest0-21swapper/222:20:472
1193899644,52cyclictest0-21swapper/221:32:212
1193899644,52cyclictest0-21swapper/221:17:202
1193899644,52cyclictest0-21swapper/219:22:232
1193899634,52cyclictest0-21swapper/222:22:212
1193899634,51cyclictest0-21swapper/221:12:132
1193899634,51cyclictest0-21swapper/219:47:152
1193899634,50cyclictest0-21swapper/222:12:282
1193899634,50cyclictest0-21swapper/222:02:192
1193899634,50cyclictest0-21swapper/222:02:192
248599620,7rtkit-daemon0-21swapper/220:37:413
248599620,7rtkit-daemon0-21swapper/220:37:413
248599620,4rtkit-daemon2484-21rtkit-daemon20:34:113
1193899624,51cyclictest0-21swapper/220:12:192
11938996223,10cyclictest121850irq/46-eth021:37:202
1193799625,30cyclictest0-21swapper/121:52:291
1193899613,51cyclictest0-21swapper/222:32:172
1193799614,48cyclictest0-21swapper/121:13:531
1193799613,52cyclictest0-21swapper/119:27:071
11937996126,11cyclictest14859-21cpuspeed_turbos22:47:101
11937996125,20cyclictest18537-21sshd22:03:221
11937996125,20cyclictest18537-21sshd22:03:221
11937996124,28cyclictest32598-21aten_r1power_en20:02:151
248599600,7rtkit-daemon0-21swapper/219:42:433
248599600,7rtkit-daemon0-21swapper/219:02:373
229042604,13sleep20-21swapper/222:11:592
1193999605,47cyclictest0-21swapper/322:26:583
1193999605,47cyclictest0-21swapper/322:17:173
1193999605,46cyclictest0-21swapper/321:16:143
1193999605,34cyclictest0-21swapper/322:28:003
1193999600,9cyclictest7596-21kworker/0:019:25:253
1193899604,49cyclictest0-21swapper/220:17:342
1193899604,48cyclictest0-21swapper/220:47:332
1193799605,30cyclictest0-21swapper/121:43:581
1193799604,49cyclictest0-21swapper/120:12:061
1193799604,47cyclictest0-21swapper/121:32:201
11937996025,14cyclictest0-21swapper/119:26:081
248599590,8rtkit-daemon0-21swapper/221:03:553
248599590,7rtkit-daemon0-21swapper/218:06:543
248599590,7rtkit-daemon0-21swapper/217:52:173
248599590,6rtkit-daemon0-21swapper/220:02:353
1193999595,46cyclictest0-21swapper/319:39:073
1193999595,35cyclictest0-21swapper/320:31:233
1193999594,47cyclictest0-21swapper/322:15:493
1193999594,35cyclictest0-21swapper/320:54:113
11939995916,23cyclictest0-21swapper/321:19:543
11939995914,28cyclictest0-21swapper/322:48:443
1193899594,37cyclictest0-21swapper/219:32:222
1193899593,48cyclictest0-21swapper/217:42:202
1193799595,29cyclictest1833-21ssh21:39:211
1193799594,47cyclictest0-21swapper/122:02:001
1193799594,47cyclictest0-21swapper/120:21:521
1193799593,49cyclictest0-21swapper/120:27:201
1193799593,48cyclictest11082-21runrttasks22:41:591
1193799593,48cyclictest11082-21runrttasks22:41:591
11937995927,11cyclictest121850irq/46-eth019:42:181
1193799592,47cyclictest0-21swapper/120:33:341
248599580,6rtkit-daemon0-21swapper/218:31:013
1193999585,45cyclictest0-21swapper/321:23:043
1193999585,45cyclictest0-21swapper/321:23:043
1193999585,35cyclictest0-21swapper/319:36:483
11939995841,11cyclictest16719-21irqstats18:37:293
1193999584,40cyclictest0-21swapper/321:49:403
11939995838,13cyclictest12421-21netstat22:42:223
11939995838,13cyclictest12421-21netstat22:42:223
11939995816,22cyclictest0-21swapper/321:40:023
1193899584,48cyclictest0-21swapper/220:57:232
1193899583,47cyclictest0-21swapper/219:55:112
1193899583,47cyclictest0-21swapper/219:55:112
11938995810,28cyclictest0-21swapper/220:42:202
11938995810,28cyclictest0-21swapper/220:42:202
1193799584,36cyclictest0-21swapper/121:30:421
1193799583,48cyclictest0-21swapper/122:39:031
1193799583,48cyclictest0-21swapper/121:19:201
11937995818,22cyclictest0-21swapper/122:09:241
64322574,11sleep10-21swapper/120:57:321
248599570,7rtkit-daemon0-21swapper/219:12:143
248599570,6rtkit-daemon0-21swapper/219:57:433
248599570,6rtkit-daemon0-21swapper/218:59:303
248599570,6rtkit-daemon0-21swapper/218:52:453
1193999575,45cyclictest0-21swapper/322:41:513
11939995741,11cyclictest25738-21timerwakeupswit17:47:413
11939995741,11cyclictest25738-21timerwakeupswit17:47:413
11939995713,32cyclictest0-21swapper/321:56:073
11939995711,26cyclictest0-21swapper/321:27:163
1193899573,47cyclictest0-21swapper/220:22:192
1193799574,29cyclictest0-21swapper/118:02:351
1193799573,48cyclictest0-21swapper/119:38:451
1193799573,47cyclictest0-21swapper/121:08:071
1193799573,46cyclictest0-21swapper/119:35:331
1193799573,45cyclictest0-21swapper/118:52:241
1193799573,45cyclictest0-21swapper/117:52:421
11937995722,28cyclictest23803-21cut20:37:131
11937995722,28cyclictest23803-21cut20:37:131
3762562,47sleep1380-21sh22:26:171
1193999565,43cyclictest0-21swapper/322:34:493
1193999565,34cyclictest0-21swapper/320:07:163
1193999565,31cyclictest0-21swapper/320:22:133
1193999564,30cyclictest0-21swapper/320:12:193
11939995636,12cyclictest17798-21gltestperf17:32:293
1193999563,45cyclictest0-21swapper/317:22:203
1193899563,47cyclictest0-21swapper/222:47:232
1193899563,46cyclictest29-21ksoftirqd/218:42:272
1193899563,46cyclictest0-21swapper/221:59:412
1193799563,47cyclictest0-21swapper/120:45:571
1193799563,47cyclictest0-21swapper/120:45:571
1193799563,46cyclictest0-21swapper/120:22:461
1193799562,49cyclictest0-21swapper/121:06:241
1193799562,46cyclictest0-21swapper/120:10:291
265572553,44sleep20-21swapper/218:57:362
1193999555,43cyclictest0-21swapper/322:01:113
1193999555,33cyclictest0-21swapper/321:42:133
1193999555,33cyclictest0-21swapper/318:32:203
1193999555,33cyclictest0-21swapper/318:32:203
1193999554,42cyclictest0-21swapper/319:52:243
1193999554,42cyclictest0-21swapper/319:52:243
1193999553,41cyclictest0-21swapper/321:34:413
1193899554,32cyclictest0-21swapper/218:07:202
11938995510,25cyclictest28633-21awk17:57:092
1193799553,47cyclictest0-21swapper/122:16:341
11937995522,14cyclictest0-21swapper/120:47:131
1193999545,31cyclictest0-21swapper/319:47:223
1193999544,42cyclictest0-21swapper/322:07:193
1193999544,34cyclictest0-21swapper/317:39:133
11939995438,10cyclictest29097-21ssh20:42:473
11939995438,10cyclictest29097-21ssh20:42:473
11939995433,15cyclictest0-21swapper/320:57:373
1193899545,44cyclictest0-21swapper/221:31:022
1193899544,31cyclictest0-21swapper/218:37:202
1193899544,31cyclictest0-21swapper/217:22:382
11938995437,11cyclictest12632-21unixbench_multi18:27:402
1193799546,16cyclictest0-21swapper/121:25:461
1193799546,16cyclictest0-21swapper/121:25:461
1193799544,41cyclictest1008-21ssh22:27:101
1193799543,43cyclictest0-21swapper/122:17:261
248599530,5rtkit-daemon2484-21rtkit-daemon18:43:003
248599530,4rtkit-daemon2484-21rtkit-daemon18:22:463
1193999534,32cyclictest0-21swapper/317:27:333
1193899534,30cyclictest0-21swapper/219:07:262
1193899534,30cyclictest0-21swapper/218:37:072
1193899534,30cyclictest0-21swapper/218:37:072
1193899534,13cyclictest0-21swapper/221:44:232
1193899533,43cyclictest0-21swapper/217:57:202
1193899532,44cyclictest0-21swapper/217:47:432
1193899532,44cyclictest0-21swapper/217:47:432
1193799539,22cyclictest0-21swapper/119:07:331
1193799534,40cyclictest0-21swapper/118:12:361
1193799533,44cyclictest0-21swapper/118:17:231
1193799533,42cyclictest0-21swapper/117:42:221
1193799533,42cyclictest0-21swapper/117:32:231
11937995322,11cyclictest5337-21ssh22:32:181
1193799532,45cyclictest0-21swapper/121:47:131
248599520,4rtkit-daemon2484-21rtkit-daemon19:19:443
248599520,4rtkit-daemon2484-21rtkit-daemon17:42:333
1193999525,30cyclictest0-21swapper/321:07:103
1193999525,29cyclictest0-21swapper/318:47:393
1193899525,39cyclictest0-21swapper/219:17:192
1193899525,28cyclictest0-21swapper/219:02:352
1193899524,40cyclictest0-21swapper/217:27:272
11938995233,11cyclictest20735-21wc17:37:382
1193799524,40cyclictest0-21swapper/118:37:311
11937995221,14cyclictest0-21swapper/118:32:241
11937995221,14cyclictest0-21swapper/118:32:241
248599510,4rtkit-daemon2484-21rtkit-daemon17:57:253
1193999519,22cyclictest0-21swapper/318:17:203
1193999515,25cyclictest3513-21idleruntime-cro18:12:083
1193899514,40cyclictest0-21swapper/218:52:062
1193799515,29cyclictest0-21swapper/118:07:331
1193799515,13cyclictest0-21swapper/118:52:061
1193799514,28cyclictest0-21swapper/117:32:101
11937995119,14cyclictest0-21swapper/119:02:211
1193899504,29cyclictest0-21swapper/218:24:482
1193899503,15cyclictest0-21swapper/217:32:432
1193899502,42cyclictest0-21swapper/218:17:242
1193799504,39cyclictest0-21swapper/117:57:341
11937995019,12cyclictest0-21swapper/117:22:111
1193899492,41cyclictest0-21swapper/218:17:092
1193799493,41cyclictest0-21swapper/118:43:541
1193799493,40cyclictest0-21swapper/117:37:211
11937994923,18cyclictest4176-21unixbench-2d19:17:391
248599480,4rtkit-daemon2484-21rtkit-daemon17:22:113
1193799484,36cyclictest0-21swapper/118:57:211
11937994830,11cyclictest25849-21unixbench_singl17:47:421
11937994830,11cyclictest25849-21unixbench_singl17:47:421
118462484,39sleep00-21swapper/017:21:290
1193799474,36cyclictest0-21swapper/117:22:371
1193799472,39cyclictest0-21swapper/119:12:191
11938994516,13cyclictest0-21swapper/217:22:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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