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2026-04-14 - 13:31

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Tue Apr 14, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2646211693,18sleep00-21swapper/019:07:130
2572211493,16sleep20-21swapper/219:06:182
28522112101,6sleep30-21swapper/319:09:513
2586210784,18sleep10-21swapper/119:06:301
116532820,0sleep00-21swapper/000:25:100
212362780,0sleep30-21swapper/300:00:403
205432780,1sleep320544-21sh21:45:163
226542770,1sleep10-21swapper/121:13:361
231952740,0sleep00-21swapper/000:36:050
176562740,0sleep2301ktimersoftd/222:50:132
96212720,0sleep20-21swapper/223:15:142
93382720,0sleep10-21swapper/121:34:241
181412720,0sleep20-21swapper/222:16:182
152142710,0sleep30-21swapper/323:20:283
269972700,0sleep30-21swapper/320:10:013
116212690,0sleep00-21swapper/023:50:430
97512680,0sleep20-21swapper/223:49:412
164542310,1sleep20-21swapper/222:49:012
135752240,1sleep213577-21ssh22:11:422
289999221,19cyclictest0-21swapper/320:10:093
289999220,20cyclictest39-21ksoftirqd/322:35:143
289899222,18cyclictest0-21swapper/223:00:132
289999210,19cyclictest0-21swapper/322:55:103
289999201,2cyclictest0-21swapper/322:00:123
289999201,2cyclictest0-21swapper/322:00:123
289999200,1cyclictest0-21swapper/320:50:123
2898992016,2cyclictest0-21swapper/219:25:102
289899200,19cyclictest0-21swapper/220:20:122
289999190,2cyclictest0-21swapper/323:25:113
294422180,0sleep00-21swapper/021:55:110
289799181,2cyclictest0-21swapper/121:53:041
289799180,13cyclictest0-21swapper/123:52:041
2896991813,3cyclictest9231-21ssh23:15:130
289899174,2cyclictest0-21swapper/223:22:012
2898991714,2cyclictest433-21kworker/u8:221:30:042
289799170,2cyclictest0-21swapper/122:49:041
289799170,12cyclictest0-21swapper/100:30:011
289699170,15cyclictest0-21swapper/019:55:120
244552170,1sleep2301ktimersoftd/200:37:592
289999161,13cyclictest0-21swapper/323:45:453
289899163,2cyclictest24266-21copy21:50:042
2898991613,2cyclictest12407-21kworker/u8:121:45:052
2897991613,2cyclictest27370-21kworker/u8:100:13:041
2897991613,2cyclictest27370-21kworker/u8:100:08:051
289799160,2cyclictest0-21swapper/121:29:041
289799160,15cyclictest0-21swapper/119:34:051
289799160,15cyclictest0-21swapper/100:22:041
289799160,12cyclictest0-21swapper/122:27:051
289699161,3cyclictest0-21swapper/022:10:140
144972160,1sleep20-21swapper/219:36:012
289999151,3cyclictest31968-21ssh22:30:573
2899991510,3cyclictest0-21swapper/300:26:093
289999150,13cyclictest0-21swapper/323:51:523
289899152,2cyclictest0-21swapper/223:44:042
289899152,2cyclictest0-21swapper/222:41:042
2898991512,2cyclictest6837-21kworker/u8:122:55:042
289899151,12cyclictest0-21swapper/223:37:562
289899150,13cyclictest25885-21ssh21:16:442
289899150,13cyclictest1205-21sh00:14:302
289899150,13cyclictest0-21swapper/222:26:592
289899150,13cyclictest0-21swapper/221:41:042
289899150,13cyclictest0-21swapper/200:09:452
289799151,2cyclictest0-21swapper/123:26:041
2897991512,2cyclictest0-21swapper/122:34:311
289799151,12cyclictest9727-21apt-get21:35:061
289799151,12cyclictest14804-21copy23:55:031
289799150,14cyclictest0-21swapper/122:57:041
289799150,13cyclictest0-21swapper/122:37:511
289799150,11cyclictest0-21swapper/121:44:041
2896991510,3cyclictest0-21swapper/022:20:560
289699150,13cyclictest0-21swapper/023:05:000
289999149,3cyclictest7922-21ssh23:13:293
289999149,3cyclictest27336-21ssh23:33:473
289999145,6cyclictest2895-21cyclictest20:16:023
2899991411,2cyclictest39-21ksoftirqd/321:16:553
2899991411,2cyclictest381ktimersoftd/320:25:123
289999140,3cyclictest10862-21switchtime23:16:033
289999140,2cyclictest0-21swapper/322:28:323
289999140,2cyclictest0-21swapper/300:16:123
289899146,6cyclictest9561-21ssh22:07:542
289899146,6cyclictest9561-21ssh22:07:542
2898991411,2cyclictest0-21swapper/223:30:152
289899140,2cyclictest18732-21diskmemload23:58:052
289899140,2cyclictest0-21swapper/221:27:062
289899140,2cyclictest0-21swapper/221:00:172
289899140,12cyclictest6932-21ssh23:11:572
289899140,12cyclictest0-21swapper/223:29:082
289899140,12cyclictest0-21swapper/222:33:582
289899140,12cyclictest0-21swapper/220:40:132
289899140,12cyclictest0-21swapper/220:25:122
289899140,12cyclictest0-21swapper/200:32:332
289899140,11cyclictest5088-21ssh22:02:572
289899140,11cyclictest5088-21ssh22:02:572
2897991411,2cyclictest6837-21kworker/u8:122:52:041
2897991411,2cyclictest0-21swapper/123:45:011
2897991411,2cyclictest0-21swapper/122:43:311
2897991411,2cyclictest0-21swapper/100:01:211
2897991410,2cyclictest0-21swapper/100:16:581
289799140,9cyclictest0-21swapper/122:23:041
289799140,9cyclictest0-21swapper/100:35:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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