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2026-01-05 - 09:44
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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 rackeslot8.osadl.org (updated Mon Jan 05, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2902087992522,1cyclictest0-21swapper/320:40:003
290208799247,7cyclictest3202741-21turbostat23:05:003
2902087992320,1cyclictest0-21swapper/322:20:163
2902087992118,1cyclictest0-21swapper/319:15:003
29724642200,9sleep134-21ksoftirqd/120:00:201
290208799201,14cyclictest3291866-21taskset00:15:013
290208799198,7cyclictest3190098-21sleep22:54:593
2902087991916,1cyclictest0-21swapper/320:25:013
2902087991916,1cyclictest0-21swapper/300:40:013
290208799191,14cyclictest3088643-21sleep21:35:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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