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2026-05-17 - 21:26

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
Click here to display the system's profile data or here to proceed to next system.
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 100 highest latencies:
System rack1slot6s.osadl.org (updated Sun May 17, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12532991063,56cyclictest21148-21unixbench-2d07:04:342
12528991053,47cyclictest0-21swapper/109:47:221
125289910325,11cyclictest20208-21cpuspeed_turbos04:59:211
12532991014,54cyclictest15957-21gltestperf10:09:142
125289910141,52cyclictest0-21swapper/107:04:331
1253299995,50cyclictest0-21swapper/209:09:312
1252899995,30cyclictest0-21swapper/109:29:591
1253299956,28cyclictest14210-21yum-updatesd-he08:30:012
1253299955,50cyclictest0-21swapper/206:44:322
1252899953,51cyclictest0-21swapper/106:55:171
1252899946,42cyclictest0-21swapper/109:09:191
1252899913,47cyclictest0-21swapper/106:38:451
1253299906,46cyclictest0-21swapper/209:24:172
12528999041,13cyclictest0-21swapper/109:39:101
12528998922,15cyclictest0-21swapper/109:19:261
12528998922,15cyclictest0-21swapper/109:19:261
248599870,5rtkit-daemon2484-21rtkit-daemon08:04:322
248599850,5rtkit-daemon2484-21rtkit-daemon08:12:472
248599840,5rtkit-daemon2484-21rtkit-daemon07:34:182
248599840,5rtkit-daemon2484-21rtkit-daemon07:14:192
248599840,5rtkit-daemon2484-21rtkit-daemon07:14:192
12524997918,54cyclictest0-21swapper/008:09:310
12524997826,45cyclictest25552-21rm08:48:590
12524997719,50cyclictest0-21swapper/009:14:090
12524997716,55cyclictest0-21swapper/010:10:310
12524997712,58cyclictest0-21swapper/008:19:170
12524997627,42cyclictest1419-21runrttasks08:52:310
12524997624,45cyclictest20666-21cut07:04:270
12524997623,46cyclictest0-21swapper/006:09:430
12524997622,47cyclictest0-21swapper/007:49:250
12524997518,50cyclictest0-21swapper/007:33:580
12524997517,50cyclictest0-21swapper/008:26:520
1252499748,53cyclictest0-21swapper/007:00:090
12533997324,27cyclictest12362-21cut05:49:233
12524997315,52cyclictest0-21swapper/007:47:050
12524997314,51cyclictest0-21swapper/009:20:450
12524997314,51cyclictest0-21swapper/009:20:450
12524997223,43cyclictest1419-21runrttasks10:07:040
12524997221,44cyclictest0-21swapper/007:09:230
12524997214,51cyclictest0-21swapper/009:59:260
12524997214,51cyclictest0-21swapper/009:59:260
12524997129,34cyclictest14780-21grep05:54:240
12524997129,34cyclictest14780-21grep05:54:240
12524997127,16cyclictest22753-21unixbench_singl07:54:340
12524997125,26cyclictest13085-21ssh07:41:050
12524997123,42cyclictest8374-21find09:09:270
12524997120,44cyclictest0-21swapper/006:54:200
12524997120,34cyclictest0-21swapper/007:34:170
12524997114,49cyclictest0-21swapper/008:29:240
1253299704,57cyclictest0-21swapper/209:44:252
12524997024,40cyclictest15954-21cpuspeed_turbos08:34:130
12524997023,40cyclictest1419-21runrttasks08:56:540
12524997020,42cyclictest0-21swapper/005:14:250
12524997018,43cyclictest0-21swapper/006:49:180
12524997012,51cyclictest0-21swapper/007:59:240
12524997012,51cyclictest0-21swapper/007:59:240
1253299694,57cyclictest0-21swapper/208:39:162
1253299694,57cyclictest0-21swapper/208:39:162
1252499697,56cyclictest0-21swapper/009:30:110
12524996924,38cyclictest31441-21grep09:44:170
12524996922,39cyclictest25056-21munin-node09:34:230
12524996920,43cyclictest0-21swapper/008:59:190
12524996919,43cyclictest0-21swapper/009:49:130
12524996918,15cyclictest0-21swapper/007:19:530
12524996917,45cyclictest0-21swapper/009:24:210
1253299684,58cyclictest0-21swapper/209:19:112
1253299684,58cyclictest0-21swapper/209:19:112
12524996822,39cyclictest2511-21grep07:24:350
12524996821,40cyclictest0-21swapper/006:19:280
12524996820,41cyclictest0-21swapper/009:39:170
12524996819,42cyclictest0-21swapper/009:54:260
12524996818,33cyclictest0-21swapper/008:08:590
12524996811,51cyclictest0-21swapper/009:07:530
248599670,9rtkit-daemon2484-21rtkit-daemon08:16:243
194732676,53sleep10-21swapper/107:49:461
12533996722,29cyclictest15468-21netstat07:44:293
12524996728,15cyclictest91221munin-node05:44:330
12524996727,34cyclictest24999-21cpuspeed_turbos05:09:190
12524996727,34cyclictest24999-21cpuspeed_turbos05:09:190
12524996724,37cyclictest1419-21runrttasks06:04:360
12524996718,42cyclictest0-21swapper/004:54:310
1253299664,52cyclictest0-21swapper/208:56:112
12524996622,37cyclictest0-21swapper/008:40:150
12524996622,37cyclictest0-21swapper/008:40:150
12524996620,39cyclictest0-21swapper/008:14:120
12524996619,40cyclictest0-21swapper/006:14:210
12524996619,32cyclictest0-21swapper/007:17:560
12524996619,32cyclictest0-21swapper/007:17:560
12524996618,41cyclictest0-21swapper/006:44:250
43042650,3sleep2281ktimersoftd/208:15:462
12533996519,26cyclictest0-21swapper/307:55:023
12528996543,14cyclictest0-21swapper/107:24:261
12524996512,47cyclictest0-21swapper/004:59:280
1253399645,48cyclictest0-21swapper/310:01:563
1253399645,48cyclictest0-21swapper/310:01:563
1253299644,52cyclictest0-21swapper/208:19:182
12524996419,39cyclictest0-21swapper/005:34:420
1253399635,32cyclictest0-21swapper/308:04:163
1253299634,49cyclictest0-21swapper/205:39:172
12528996343,14cyclictest0-21swapper/107:30:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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