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2026-08-08 - 23:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 50 highest latencies:
System rack7slot7s.osadl.org (updated Sat Aug 08, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2420729380,9sleep00-21swapper/007:07:060
2427329267,9sleep30-21swapper/307:07:583
2409729279,9sleep20-21swapper/207:05:402
2229828564,6sleep10-21swapper/107:05:061
98682720,0sleep00-21swapper/010:21:560
13562560,0sleep10-21swapper/109:57:491
2452999290,29cyclictest0-21swapper/212:26:422
2452399270,2cyclictest0-21swapper/011:29:350
2452399270,0cyclictest0-21swapper/011:53:080
2452699240,21cyclictest0-21swapper/112:30:141
24523992419,2cyclictest225-21systemd-journal11:36:390
2452999230,22cyclictest0-21swapper/211:53:082
2452999220,21cyclictest0-21swapper/209:30:082
2452999220,18cyclictest0-21swapper/210:40:022
2452399220,17cyclictest0-21swapper/009:38:420
2452999210,21cyclictest0-21swapper/210:02:292
2452999210,0cyclictest0-21swapper/211:29:352
24526992119,1cyclictest0-21swapper/111:55:191
24526992118,2cyclictest22102-21latency_hist10:29:591
20882210,1sleep30-21swapper/312:14:153
2452399207,7cyclictest3212-21grep08:39:590
24523992019,1cyclictest0-21swapper/009:33:030
24533991914,2cyclictest0-21swapper/311:48:183
24529991918,1cyclictest0-21swapper/209:41:032
2452999190,17cyclictest0-21swapper/209:36:152
24526991916,2cyclictest3344-21sort08:39:591
24523991912,2cyclictest0-21swapper/010:47:490
2453399187,9cyclictest0-21swapper/310:57:013
2452999182,15cyclictest0-21swapper/210:45:202
2452999180,13cyclictest26127-21sensors11:10:232
2452699183,13cyclictest17522-21diskmemload09:41:041
2452699182,15cyclictest17522-21diskmemload12:36:131
2452699180,18cyclictest0-21swapper/110:00:291
2452399180,6cyclictest225-21systemd-journal08:05:380
24533991716,1cyclictest0-21swapper/312:15:243
24529991716,1cyclictest0-21swapper/210:07:372
2452999171,11cyclictest0-21swapper/207:40:162
2452999170,2cyclictest0-21swapper/209:50:522
2452999170,2cyclictest0-21swapper/209:50:512
24526991713,3cyclictest25-21ksoftirqd/107:55:261
2452699170,17cyclictest0-21swapper/109:17:211
2452399172,13cyclictest12448-21ssh11:40:510
24523991716,1cyclictest13-21ksoftirqd/011:05:500
2452399170,16cyclictest0-21swapper/010:55:060
2452399170,16cyclictest0-21swapper/010:14:350
2453399162,14cyclictest0-21swapper/310:05:213
24533991614,1cyclictest0-21swapper/312:38:303
2453399160,2cyclictest0-21swapper/309:17:463
2452999160,3cyclictest0-21swapper/209:20:012
2452999160,15cyclictest0-21swapper/209:14:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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