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2026-05-15 - 13:40

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 Fri May 15, 2026 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25451982255248,4sleep170-21swapper/1719:05:469
25454532244237,4sleep50-21swapper/519:08:3415
25455492242236,3sleep160-21swapper/1619:09:468
25452162237219,11sleep70-21swapper/719:05:5617
25452082235199,12sleep30-21swapper/319:05:5113
25455142234215,10sleep180-21swapper/1819:09:2810
25452202233225,5sleep90-21swapper/919:05:5819
25454082232213,12sleep120-21swapper/1219:08:004
25454062231211,12sleep100-21swapper/1019:07:592
25452962231216,10sleep00-21swapper/019:06:490
25453512228209,12sleep130-21swapper/1319:07:215
25422372227206,13sleep190-21swapper/1919:05:0711
25455112224204,12sleep150-21swapper/1519:09:247
25453522222203,12sleep140-21swapper/1419:07:236
25454242221213,5sleep60-21swapper/619:08:1516
25454202221201,13sleep20-21swapper/219:08:1012
25454192220201,12sleep10-21swapper/119:08:101
25453692220211,6sleep40-21swapper/419:07:3314
25455042208188,12sleep80-21swapper/819:09:1718
25453772200181,12sleep110-21swapper/1119:07:393
254593699717,33cyclictest0-21swapper/122:11:561
254594999403,37cyclictest0-21swapper/521:04:5915
2545984993830,8cyclictest0-21swapper/1519:25:597
2545970993737,0cyclictest0-21swapper/1121:04:593
2545970993737,0cyclictest0-21swapper/1119:22:593
2545981993629,5cyclictest0-21swapper/1419:25:596
2545975993630,6cyclictest0-21swapper/1220:12:584
254596099360,35cyclictest0-21swapper/920:21:5919
2545958993634,1cyclictest1700471-21CPU18
2545986993529,5cyclictest1700472-21CPU8
2545984993529,5cyclictest0-21swapper/1521:11:597
2545981993529,5cyclictest0-21swapper/1419:54:596
2545991993430,4cyclictest0-21swapper/1720:56:599
2545991993430,4cyclictest0-21swapper/1720:56:599
2545986993428,6cyclictest0-21swapper/1619:54:598
2545984993430,4cyclictest0-21swapper/1519:54:597
254594699340,1cyclictest1700472-21CPU14
254594699340,1cyclictest1700472-21CPU14
2545944993433,1cyclictest0-21swapper/320:40:5913
254596099330,33cyclictest0-21swapper/920:44:5919
254596099330,33cyclictest0-21swapper/919:57:5819
2545951993333,0cyclictest0-21swapper/620:41:5816
2545951993332,1cyclictest0-21swapper/619:17:5816
254595199330,33cyclictest0-21swapper/619:57:5916
2545949993330,3cyclictest0-21swapper/519:45:5915
2545946993333,0cyclictest0-21swapper/420:02:5914
254594699330,33cyclictest0-21swapper/419:57:5914
254594699330,0cyclictest0-21swapper/420:22:5914
2545993993230,1cyclictest0-21swapper/1820:40:5910
2545986993226,4cyclictest0-21swapper/1621:11:598
2545981993227,3cyclictest0-21swapper/1421:11:586
2545975993228,4cyclictest0-21swapper/1219:34:594
2545975993222,10cyclictest0-21swapper/1219:25:584
2545951993232,0cyclictest0-21swapper/622:24:5816
2545951993232,0cyclictest0-21swapper/620:24:5916
2545946993232,0cyclictest0-21swapper/422:24:5814
2545946993232,0cyclictest0-21swapper/420:41:5814
254594699320,32cyclictest0-21swapper/421:51:5914
254593699320,32cyclictest0-21swapper/121:16:591
2545963993131,0cyclictest0-21swapper/1020:36:592
2545963993131,0cyclictest0-21swapper/1019:40:592
254596399310,31cyclictest0-21swapper/1019:34:582
2545960993131,0cyclictest0-21swapper/920:10:5919
2545960993131,0cyclictest0-21swapper/919:52:5919
2545958993128,3cyclictest0-21swapper/819:45:5918
2545955993129,1cyclictest0-21swapper/720:40:5917
2545946993131,0cyclictest0-21swapper/419:17:5914
2545939993131,0cyclictest0-21swapper/220:36:5912
2545939993131,0cyclictest0-21swapper/219:44:5912
2545936993131,0cyclictest0-21swapper/120:27:581
2545993993028,2cyclictest0-21swapper/1819:22:5910
2545977993029,1cyclictest0-21swapper/1320:40:585
2545944993030,0cyclictest0-21swapper/319:22:5913
2545939993030,0cyclictest0-21swapper/222:01:5912
2545960992929,0cyclictest0-21swapper/919:28:5919
2545951992929,0cyclictest0-21swapper/619:44:5816
2545946992927,1cyclictest1700472-21CPU14
2545936992929,0cyclictest0-21swapper/120:48:591
2545936992929,0cyclictest0-21swapper/120:48:581
2545936992929,0cyclictest0-21swapper/119:56:581
2545936992926,2cyclictest1700472-21CPU1
2545991992823,4cyclictest1700471-21CPU9
2545977992827,1cyclictest0-21swapper/1319:22:585
2545960992826,1cyclictest1700472-21CPU19
2545958992828,0cyclictest0-21swapper/821:19:5818
2545951992828,0cyclictest0-21swapper/621:05:5816
2545951992828,0cyclictest0-21swapper/619:39:5916
2545949992828,0cyclictest0-21swapper/521:19:5915
254594999282,26cyclictest0-21swapper/519:40:1815
2545946992828,0cyclictest0-21swapper/421:05:5914
2545946992828,0cyclictest0-21swapper/419:44:5914
2545946992828,0cyclictest0-21swapper/419:39:5914
2545946992827,1cyclictest0-21swapper/420:39:5914
2545939992828,0cyclictest0-21swapper/200:06:5912
2545939992828,0cyclictest0-21swapper/200:06:5812
2545936992828,0cyclictest0-21swapper/121:00:581
2545936992828,0cyclictest0-21swapper/120:05:591
2545936992826,1cyclictest1700472-21CPU1
2545993992724,2cyclictest1700471-21CPU10
2545991992724,3cyclictest0-21swapper/1720:12:599
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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