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2025-12-23 - 00:53
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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 rackeslot3.osadl.org (updated Mon Dec 22, 2025 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311411399680,2cyclictest3159546-21kworker/1:109:32:411
3114113996440,14cyclictest3144112-21kworker/1:008:55:151
3114113996344,18cyclictest3123703-21kworker/1:207:45:151
311411399631,2cyclictest0-21swapper/109:37:141
311411399631,2cyclictest0-21swapper/109:37:141
311411399610,59cyclictest0-21swapper/111:25:481
3114113995932,26cyclictest3154906-21kworker/1:009:20:141
3114113995855,2cyclictest0-21swapper/109:05:531
3114113995842,15cyclictest3123703-21kworker/1:208:00:151
3114113995840,17cyclictest3118152-21kworker/1:307:20:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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