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2026-04-25 - 14:45
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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 rack3slot6.osadl.org (updated Sat Apr 25, 2026 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
292319911079,16cyclictest14-21ksoftirqd/011:35:120
292319910274,18cyclictest14-21ksoftirqd/010:40:160
292319910071,19cyclictest14-21ksoftirqd/009:00:130
29231999970,18cyclictest14-21ksoftirqd/008:30:120
29231999969,16cyclictest14-21ksoftirqd/007:25:160
29231999871,15cyclictest14-21ksoftirqd/012:15:130
29231999766,17cyclictest0-21swapper/009:55:170
29231999766,17cyclictest0-21swapper/009:55:170
2869129715,38sleep00-21swapper/007:06:130
29231999667,18cyclictest14-21ksoftirqd/010:15:160
29231999364,18cyclictest14-21ksoftirqd/007:20:130
29231999363,18cyclictest14-21ksoftirqd/010:55:140
29231999061,20cyclictest14-21ksoftirqd/009:10:120
29231999058,20cyclictest14-21ksoftirqd/007:10:140
2884329033,46sleep10-21swapper/107:07:511
29231998961,17cyclictest14-21ksoftirqd/007:30:130
29231998859,20cyclictest14-21ksoftirqd/007:45:250
29231998655,19cyclictest14-21ksoftirqd/012:05:130
29231998613,60cyclictest0-21swapper/011:05:140
29231998454,18cyclictest14-21ksoftirqd/007:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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