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2026-06-07 - 22:16
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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 Sun Jun 07, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1738199883820,49cyclictest0-21swapper/107:10:181
1738099808754,13cyclictest12456-21ssh09:37:520
1738099758694,51cyclictest0-21swapper/007:10:180
1738199712688,11cyclictest0-21swapper/109:37:511
173302436412,16sleep00-21swapper/007:09:510
173819912716,71cyclictest0-21swapper/110:20:001
2286991130,5rtkit-daemon2285-21rtkit-daemon09:43:001
173809911293,14cyclictest0-21swapper/010:40:580
173809910581,19cyclictest0-21swapper/012:36:590
282121040,4sleep02822-21proc_pri09:20:210
17380999213,74cyclictest0-21swapper/011:46:000
17381999115,69cyclictest0-21swapper/108:44:001
1738099899,74cyclictest0-21swapper/010:02:590
17380998973,12cyclictest0-21swapper/008:04:590
17381998825,45cyclictest0-21swapper/112:16:591
17381998813,56cyclictest0-21swapper/110:05:591
17381998813,56cyclictest0-21swapper/110:05:581
228699850,4rtkit-daemon2285-21rtkit-daemon09:47:350
228699850,4rtkit-daemon2285-21rtkit-daemon07:59:330
228699830,11rtkit-daemon0-21swapper/010:02:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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