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2026-06-03 - 16:51
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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 Wed Jun 03, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
104409919371858,72cyclictest10507-21latency_hist07:10:020
104409917911735,50cyclictest0-21swapper/007:22:090
101232458440,12sleep10-21swapper/107:07:141
1044199445399,32cyclictest0-21swapper/107:22:091
2286991610,4rtkit-daemon2285-21rtkit-daemon11:50:590
104409914295,41cyclictest0-21swapper/010:54:000
104409914295,41cyclictest0-21swapper/010:54:000
2286991040,4rtkit-daemon2285-21rtkit-daemon10:25:371
2286991030,4rtkit-daemon2285-21rtkit-daemon10:51:231
2286991030,4rtkit-daemon2285-21rtkit-daemon10:51:231
228699990,4rtkit-daemon2285-21rtkit-daemon11:58:391
10440999517,60cyclictest0-21swapper/007:56:590
1044099946,70cyclictest0-21swapper/007:41:590
228699890,48rtkit-daemon2285-21rtkit-daemon07:47:001
228699870,45rtkit-daemon2285-21rtkit-daemon11:04:181
10440998712,64cyclictest0-21swapper/011:05:590
10440998412,57cyclictest0-21swapper/009:45:590
1044099817,67cyclictest0-21swapper/010:24:010
228699800,12rtkit-daemon0-21swapper/110:59:531
228699800,11rtkit-daemon0-21swapper/011:11:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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