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2026-04-13 - 21:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack0slot6s.osadl.org (updated Mon Apr 13, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40090332283251,24sleep100-21swapper/1019:06:282
40090302236216,12sleep80-21swapper/819:06:2618
40090982233214,12sleep190-21swapper/1919:07:1711
40092912232214,11sleep20-21swapper/219:09:4012
40093052231210,13sleep160-21swapper/1619:09:558
40090822231210,12sleep60-21swapper/619:07:0416
40092982230212,11sleep90-21swapper/919:09:4819
40090942230210,12sleep150-21swapper/1519:07:137
40093012229209,13sleep120-21swapper/1219:09:504
40092262229211,11sleep140-21swapper/1419:08:526
40092412228208,12sleep10-21swapper/119:09:001
40093162226186,13sleep00-21swapper/019:09:590
40092962226209,10sleep70-21swapper/719:09:4617
40092372224205,11sleep180-21swapper/1819:08:5710
40090802221213,5sleep40-21swapper/419:07:0114
40090422221202,12sleep170-21swapper/1719:06:359
40090922220201,12sleep130-21swapper/1319:07:105
40092232219199,13sleep110-21swapper/1119:08:493
40091072217197,12sleep50-21swapper/519:07:2315
40090792214195,12sleep30-21swapper/319:07:0013
400965599757,33cyclictest0-21swapper/023:17:050
400968699715,27cyclictest0-21swapper/1020:02:042
40471672400,0sleep170-21swapper/1719:50:189
4009702993113,0cyclictest206850irq/155-eno100:15:126
4009677993130,1cyclictest2248-21nessusd00:16:5817
4009667993016,0cyclictest0-21swapper/400:15:0814
4009667992916,0cyclictest0-21swapper/400:14:5814
4009692992828,0cyclictest0-21swapper/1100:14:593
4009670992828,0cyclictest0-21swapper/500:14:5915
4009708992727,0cyclictest0-21swapper/1600:14:598
4009696992725,1cyclictest0-21swapper/1200:14:594
4009660992626,0cyclictest0-21swapper/200:15:0012
4009657992525,0cyclictest0-21swapper/100:15:001
4009718992423,1cyclictest76649-21updatedb00:15:1311
4009716992424,0cyclictest0-21swapper/1800:15:1310
400968099240,23cyclictest28256-21needreboot23:15:2018
4009718992321,1cyclictest472370-21CPU11
400968299231,21cyclictest472370-21CPU19
400968299230,22cyclictest472370-21CPU19
4009718992220,1cyclictest472371-21CPU11
4009718992220,1cyclictest472370-21CPU11
400971899220,21cyclictest472370-21CPU11
400970299220,21cyclictest77255-21latency_hist00:15:006
400968299220,21cyclictest76649-21updatedb00:15:0019
400968299220,1cyclictest472370-21CPU19
4009718992120,1cyclictest0-21swapper/1900:15:0011
4009718992119,1cyclictest472371-21CPU11
400971899210,21cyclictest0-21swapper/1919:11:2511
4009712992117,3cyclictest76927-21cat00:14:599
400969999210,19cyclictest0-21swapper/1300:14:585
4009696992119,1cyclictest472371-21CPU4
400969699210,2cyclictest76649-21updatedb00:15:174
4009682992120,0cyclictest0-21swapper/919:10:1119
400968299210,20cyclictest0-21swapper/919:40:1519
400968099211,19cyclictest472371-21CPU18
400968099210,21cyclictest0-21swapper/820:05:1718
400968099210,21cyclictest0-21swapper/819:11:2218
4009670992121,0cyclictest0-21swapper/500:16:5815
4009660992117,3cyclictest4187877-21cut22:35:1712
4009718992020,0cyclictest0-21swapper/1922:35:1611
4009718992018,1cyclictest472371-21CPU11
4009718992018,1cyclictest472371-21CPU11
400971899200,20cyclictest0-21swapper/1923:05:1811
400971899200,0cyclictest0-21swapper/1922:55:1511
4009716992020,0cyclictest36784-21strings23:25:1510
4009716992020,0cyclictest0-21swapper/1822:55:1510
400971699200,0cyclictest0-21swapper/1823:05:1810
400971699200,0cyclictest0-21swapper/1822:35:1610
400971699200,0cyclictest0-21swapper/1821:45:4310
400971699200,0cyclictest0-21swapper/1819:10:0310
4009712992020,0cyclictest0-21swapper/1719:10:559
400971299200,19cyclictest0-21swapper/1700:15:019
400970899200,1cyclictest472371-21CPU8
400970699200,20cyclictest76711-21awk00:14:587
400970699200,19cyclictest0-21swapper/1520:30:197
400970699200,19cyclictest0-21swapper/1500:15:097
400970299200,1cyclictest472371-21CPU6
400970299200,19cyclictest0-21swapper/1419:10:436
400969999200,19cyclictest0-21swapper/1319:11:105
400969999200,19cyclictest0-21swapper/1300:32:275
400969999200,18cyclictest0-21swapper/1300:15:075
400969999200,18cyclictest0-21swapper/1300:07:225
400969699200,19cyclictest472370-21CPU4
4009692992020,0cyclictest0-21swapper/1100:16:593
4009682992020,0cyclictest0-21swapper/923:36:4719
4009682992020,0cyclictest0-21swapper/921:45:1619
400968299200,19cyclictest4077142-21strings20:25:1619
400968299200,0cyclictest0-21swapper/900:30:1819
4009680992020,0cyclictest0-21swapper/819:35:1618
4009680992018,1cyclictest0-21swapper/800:15:0418
400968099200,19cyclictest19760-21strings23:05:1718
400968099200,0cyclictest0-21swapper/820:19:4118
400968099200,0cyclictest0-21swapper/800:14:5618
4009677992020,0cyclictest0-21swapper/719:11:1017
400967799200,19cyclictest0-21swapper/700:14:5617
4009673992019,1cyclictest0-21swapper/619:10:4716
400967399200,19cyclictest3980436-21kworker/6:1+events00:15:0416
400967399200,19cyclictest0-21swapper/600:14:5716
400966599200,19cyclictest0-21swapper/319:10:4213
400966599200,19cyclictest0-21swapper/300:15:1013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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