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2026-05-24 - 22:16
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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
Characteristics of the 10 highest latencies:
System rackdslot1.osadl.org (updated Sun May 24, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
595021640,6sleep01701899cyclictest11:20:270
1702199792,35cyclictest0-21swapper/309:45:103
1702199782,33cyclictest0-21swapper/307:30:163
1702199762,32cyclictest0-21swapper/311:35:223
1702199752,29cyclictest0-21swapper/308:40:143
1702199742,34cyclictest0-21swapper/311:00:173
1702199732,35cyclictest0-21swapper/309:05:253
1702199722,32cyclictest0-21swapper/311:30:183
1702099717,62cyclictest0-21swapper/211:35:282
134491710,20ptp4l26315-21apt-get07:30:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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