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2026-04-28 - 10:36
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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 20 highest latencies:
System rack1slot8.osadl.org (updated Tue Apr 28, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
114522905883,15sleep00-21swapper/019:05:410
2286998840,874rtkit-daemon0-21swapper/119:07:181
1192999867805,45cyclictest0-21swapper/119:12:251
1192899825766,49cyclictest0-21swapper/019:12:250
228699970,10rtkit-daemon0-21swapper/119:21:281
228699950,11rtkit-daemon0-21swapper/120:17:201
228699930,4rtkit-daemon2285-21rtkit-daemon22:03:360
1192899908,68cyclictest0-21swapper/020:32:000
11928998810,65cyclictest0-21swapper/020:15:000
11928998514,55cyclictest0-21swapper/020:54:000
11928998413,56cyclictest0-21swapper/023:52:590
11928998413,56cyclictest0-21swapper/023:52:590
11928997810,50cyclictest0-21swapper/022:38:000
228699690,3rtkit-daemon2285-21rtkit-daemon23:37:470
228699690,3rtkit-daemon2285-21rtkit-daemon23:37:470
1192899688,40cyclictest0-21swapper/023:03:000
11929996631,17cyclictest22938-21diskmemload00:26:451
233592659,27sleep00-21swapper/000:04:590
228699650,5rtkit-daemon2285-21rtkit-daemon22:20:010
11928996416,31cyclictest0-21swapper/019:23:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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