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2026-05-24 - 16:34
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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 Sun May 24, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2477999066,15cyclictest14-21ksoftirqd/012:00:110
232528624,16sleep10-21swapper/107:09:441
2477998556,16cyclictest14-21ksoftirqd/012:05:120
2477998515,56cyclictest0-21swapper/012:30:110
2477998456,18cyclictest14-21ksoftirqd/009:40:230
2477998315,56cyclictest0-21swapper/011:55:130
2477998314,54cyclictest0-21swapper/011:35:110
2477998214,57cyclictest0-21swapper/010:00:140
2477998113,56cyclictest0-21swapper/010:45:140
247799806,59cyclictest4410-21apt-get08:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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