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2026-01-26 - 15:54
[ 290.152] (II) VESA: driver for VESA chipsets: vesa

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 100 highest latencies:
System rack1slot6s.osadl.org (updated Mon Jan 26, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2485991150,8rtkit-daemon0-21swapper/206:28:512
2485991120,5rtkit-daemon0-21swapper/306:53:353
3631991055,56cyclictest0-21swapper/008:33:400
3631991054,56cyclictest0-21swapper/009:43:350
363799984,53cyclictest0-21swapper/209:58:492
363899977,65cyclictest0-21swapper/311:13:233
363899925,64cyclictest0-21swapper/311:43:363
363899915,11cyclictest0-21swapper/310:17:503
363899903,9cyclictest7390-21cpuspeed_turbos08:43:323
363899903,9cyclictest7390-21cpuspeed_turbos08:43:323
363899894,68cyclictest0-21swapper/309:56:153
363899894,61cyclictest0-21swapper/310:19:173
363899892,66cyclictest1878-21users08:33:513
363899874,62cyclictest0-21swapper/309:10:343
363899874,60cyclictest0-21swapper/309:58:163
363899874,13cyclictest0-21swapper/309:50:013
363899874,12cyclictest0-21swapper/311:50:423
363899873,66cyclictest28653-21diskmemload10:43:233
363899873,66cyclictest28653-21diskmemload10:43:233
363899865,65cyclictest0-21swapper/311:38:253
363899865,60cyclictest0-21swapper/310:04:563
363899864,13cyclictest0-21swapper/311:28:223
363899864,13cyclictest0-21swapper/311:28:223
363899864,12cyclictest0-21swapper/308:59:253
363899863,9cyclictest2931-21ntp_kernel_err09:23:413
3638998617,54cyclictest0-21swapper/309:30:533
3638998617,54cyclictest0-21swapper/309:30:533
3635998630,13cyclictest0-21swapper/108:38:171
363899856,60cyclictest0-21swapper/310:23:323
363899854,66cyclictest0-21swapper/311:19:303
363899854,63cyclictest413-21latency10:08:383
363899854,63cyclictest413-21latency10:08:383
363899854,58cyclictest0-21swapper/311:27:293
363899854,10cyclictest27788-21diskstats09:13:303
363899854,10cyclictest1419-21runrttasks11:00:503
363899853,67cyclictest0-21swapper/311:56:073
363899853,63cyclictest26373-21taskset10:48:233
363899853,60cyclictest0-21swapper/310:38:393
3638998517,61cyclictest15853-21gltestperf09:43:333
363899844,8cyclictest32272-21sadc07:28:193
363899844,13cyclictest0-21swapper/308:41:543
363899844,12cyclictest0-21swapper/309:33:283
3638998411,51cyclictest1419-21runrttasks09:40:583
363899835,62cyclictest0-21swapper/309:03:263
363899835,55cyclictest14299-21sed08:53:303
363899834,64cyclictest0-21swapper/311:08:273
363899834,60cyclictest29268-21expr08:28:313
363899834,59cyclictest0-21swapper/311:36:193
363899834,58cyclictest0-21swapper/307:32:323
363899834,13cyclictest0-21swapper/310:32:313
363899834,13cyclictest0-21swapper/307:23:203
363899834,13cyclictest0-21swapper/307:23:203
363899833,9cyclictest27584-21grep08:23:413
363899824,56cyclictest0-21swapper/310:57:253
363899824,12cyclictest0-21swapper/310:33:383
363899824,11cyclictest0-21swapper/308:48:453
363899824,11cyclictest0-21swapper/308:48:453
363899823,12cyclictest0-21swapper/309:18:343
363899814,7cyclictest4772-21turbostat07:38:193
363899814,62cyclictest0-21swapper/307:08:433
363899814,12cyclictest0-21swapper/306:38:213
363899804,61cyclictest0-21swapper/307:48:303
363899803,11cyclictest0-21swapper/306:28:383
363899794,57cyclictest0-21swapper/311:04:003
363899793,10cyclictest0-21swapper/307:53:323
248599790,4rtkit-daemon2484-21rtkit-daemon08:50:311
248599790,4rtkit-daemon2484-21rtkit-daemon08:50:311
363899784,12cyclictest0-21swapper/307:58:463
363899783,53cyclictest0-21swapper/308:21:163
363899774,12cyclictest0-21swapper/306:43:533
363899768,9cyclictest27490-21awk07:18:193
363899764,12cyclictest0-21swapper/306:58:423
363899763,12cyclictest0-21swapper/307:43:333
363899763,12cyclictest0-21swapper/307:03:473
363899755,54cyclictest5001-21munin-node07:38:333
363899754,12cyclictest0-21swapper/306:40:003
363899754,12cyclictest0-21swapper/306:40:003
363899754,11cyclictest23863-21sadc08:18:173
363899744,12cyclictest0-21swapper/308:03:423
363899744,12cyclictest0-21swapper/308:03:423
3637997420,14cyclictest0-21swapper/209:09:472
363899733,50cyclictest0-21swapper/306:48:463
363899733,12cyclictest0-21swapper/308:08:433
363899733,12cyclictest0-21swapper/308:08:433
363799705,59cyclictest0-21swapper/210:13:262
363199694,55cyclictest31374-21unixbench-2d10:53:440
363799685,57cyclictest0-21swapper/208:48:322
363799685,57cyclictest0-21swapper/208:48:322
363199684,56cyclictest0-21swapper/011:23:280
363199684,56cyclictest0-21swapper/010:58:260
363199683,59cyclictest0-21swapper/009:32:070
363199683,59cyclictest0-21swapper/009:32:070
363199674,57cyclictest0-21swapper/008:48:370
363199674,57cyclictest0-21swapper/008:48:370
363199674,56cyclictest0-21swapper/010:38:310
363199674,56cyclictest0-21swapper/009:23:490
3631996724,25cyclictest10434-21sed10:23:320
363199664,56cyclictest0-21swapper/008:53:390
363199664,55cyclictest0-21swapper/009:56:350
363799655,52cyclictest1419-21runrttasks11:48:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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