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2026-08-10 - 04:40
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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 Mon Aug 10, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178529911380,23cyclictest26-21ksoftirqd/100:05:171
377921100,5chrt3782-21sed20:00:020
17852991074,40cyclictest26-21ksoftirqd/123:30:131
17852991069,83cyclictest0-21swapper/100:25:151
178529910658,35cyclictest26-21ksoftirqd/121:15:151
178499910412,78cyclictest0-21swapper/021:00:120
178499910212,76cyclictest0-21swapper/022:30:110
178499910113,77cyclictest0-21swapper/023:25:120
178499910111,28cyclictest0-21swapper/021:50:130
178529910054,31cyclictest26-21ksoftirqd/121:10:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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