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2026-04-17 - 23:11

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 Fri Apr 17, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7070998927,53cyclictest9942-21ssh10:37:202
7070998926,56cyclictest13814-21ssh08:17:442
7070998722,57cyclictest0-21swapper/207:35:282
265182840,4sleep2281ktimersoftd/208:37:282
7070998319,56cyclictest0-21swapper/209:57:172
7070998229,45cyclictest1419-21runrttasks07:27:232
7070998225,49cyclictest17480-21munin-node09:47:362
7070998119,55cyclictest0-21swapper/209:37:432
7067998116,57cyclictest0-21swapper/008:21:380
7070998022,36cyclictest0-21swapper/208:47:192
7070998022,36cyclictest0-21swapper/208:47:192
7070997923,49cyclictest8559-21ssh07:22:452
7070997923,35cyclictest0-21swapper/210:02:282
7070997921,51cyclictest0-21swapper/208:55:022
7067997916,57cyclictest0-21swapper/009:24:300
7070997828,31cyclictest20973-21rm09:17:262
7070997828,31cyclictest20973-21rm09:17:262
248599780,4rtkit-daemon2484-21rtkit-daemon05:14:451
7070997727,33cyclictest0-21swapper/208:22:322
7070997724,44cyclictest23053-21tune2fs08:32:292
7067997711,57cyclictest0-21swapper/009:32:080
7070997629,31cyclictest29656-21munin-node10:17:302
7070997629,30cyclictest20912-21aten_r1power_en07:42:232
7070997616,15cyclictest121850irq/46-eth009:57:012
7067997618,52cyclictest0-21swapper/008:57:110
248599760,4rtkit-daemon2484-21rtkit-daemon05:30:151
7070997523,33cyclictest0-21swapper/205:35:592
7070997522,35cyclictest0-21swapper/208:12:282
7070997522,20cyclictest0-21swapper/208:57:412
7070997520,48cyclictest7924-21idleruntime-cro09:47:072
7070997519,49cyclictest0-21swapper/208:27:212
7070997518,49cyclictest0-21swapper/210:07:272
7067997520,49cyclictest25585-21munin-node08:37:180
7070997428,38cyclictest1419-21runrttasks08:43:312
7070997427,39cyclictest4634-21grep10:27:402
7070997422,31cyclictest6064-21ssh08:07:292
7070997419,38cyclictest0-21swapper/210:22:352
7070997416,36cyclictest0-21swapper/209:22:322
7070997330,28cyclictest8091-21ssh10:32:412
7070997330,28cyclictest8091-21ssh10:32:412
7070997325,33cyclictest26227-21missed_timers10:12:302
7070997322,19cyclictest0-21swapper/209:02:542
7070997320,46cyclictest0-21swapper/207:15:402
7070997319,35cyclictest0-21swapper/207:17:272
7070997317,49cyclictest0-21swapper/207:38:262
7067997319,18cyclictest0-21swapper/008:22:430
7067997316,51cyclictest8024-21strings08:57:340
7067997310,55cyclictest0-21swapper/006:37:350
7070997225,27cyclictest1419-21runrttasks07:57:502
7070997223,42cyclictest0-21swapper/209:32:412
7070997222,31cyclictest0-21swapper/209:07:322
7070997222,30cyclictest0-21swapper/205:27:302
7070997218,32cyclictest0-21swapper/208:05:162
7070997218,32cyclictest0-21swapper/208:05:162
7070997128,24cyclictest18373-21sendmail_mailqu09:12:382
7070997126,37cyclictest25255-21ntpdc05:47:412
7070997124,39cyclictest0-21swapper/209:27:152
7070997121,44cyclictest0-21swapper/207:55:572
7067997124,16cyclictest9530-21runrttasks07:24:540
7067997111,54cyclictest0-21swapper/007:19:190
248599710,8rtkit-daemon2245-21grep09:37:281
7070997024,39cyclictest0-21swapper/207:47:412
7070997024,37cyclictest11820-21crond05:22:182
7070997024,37cyclictest11820-21crond05:22:182
7070997022,31cyclictest0-21swapper/206:37:442
7067997018,18cyclictest0-21swapper/009:02:380
7067997016,47cyclictest0-21swapper/005:42:280
7067997012,51cyclictest0-21swapper/008:27:210
7067996925,28cyclictest4796-21cat06:12:400
7067996920,32cyclictest2024-21sshd08:48:310
7067996920,32cyclictest2024-21sshd08:48:310
7067996919,42cyclictest1419-21runrttasks09:15:380
7067996918,44cyclictest0-21swapper/010:22:320
7067996914,47cyclictest0-21swapper/007:27:470
7070996821,31cyclictest0-21swapper/205:22:282
7070996821,31cyclictest0-21swapper/205:22:282
7070996819,30cyclictest0-21swapper/206:02:372
7070996819,30cyclictest0-21swapper/206:02:372
7070996816,45cyclictest0-21swapper/206:37:152
7070996813,47cyclictest0-21swapper/205:57:132
7070996813,47cyclictest0-21swapper/205:57:132
7067996840,14cyclictest28946-21munin-node08:42:250
7067996818,32cyclictest0-21swapper/007:06:140
7067996817,45cyclictest0-21swapper/007:42:240
7067996817,34cyclictest0-21swapper/009:32:200
7067996815,36cyclictest0-21swapper/009:58:430
7067996815,30cyclictest0-21swapper/007:35:440
7067996813,48cyclictest23324-21timerandwakeup10:07:390
248599680,5rtkit-daemon2484-21rtkit-daemon08:06:540
248599680,5rtkit-daemon2484-21rtkit-daemon08:06:540
7070996745,15cyclictest0-21swapper/206:52:142
7070996745,15cyclictest0-21swapper/206:52:142
707099674,55cyclictest0-21swapper/206:57:152
7070996735,24cyclictest29972-21tail05:57:432
7070996720,39cyclictest27535-21munin-node07:02:402
7070996720,29cyclictest4603-21idleruntime06:12:372
7070996714,25cyclictest0-21swapper/205:37:292
706799678,52cyclictest0-21swapper/007:13:260
706799675,54cyclictest0-21swapper/007:40:330
7067996744,16cyclictest0-21swapper/007:57:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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