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2026-05-22 - 00:32
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Thu May 21, 2026 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310659913810,38cyclictest0-21swapper/109:20:121
310619911988,21cyclictest14-21ksoftirqd/008:50:120
310619911182,19cyclictest14-21ksoftirqd/010:15:130
310619911181,16cyclictest14-21ksoftirqd/012:15:130
310619910876,20cyclictest14-21ksoftirqd/010:55:110
310659910764,31cyclictest26-21ksoftirqd/109:25:111
310619910569,23cyclictest14-21ksoftirqd/009:45:160
310619910512,78cyclictest0-21swapper/011:15:150
310619910411,79cyclictest0-21swapper/007:35:100
310619910411,79cyclictest0-21swapper/007:10:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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