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2026-01-12 - 08:02
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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 12, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
564179992623,1cyclictest0-21swapper/319:50:163
564179992318,2cyclictest7079982sleep320:55:253
56417999231,15cyclictest701996-21taskset20:55:013
564179992219,1cyclictest0-21swapper/320:25:003
564179991916,1cyclictest0-21swapper/319:25:013
56417999191,14cyclictest888322-21taskset23:20:123
9387812180,8sleep014-21ksoftirqd/023:55:190
564179991815,1cyclictest0-21swapper/322:10:003
564179991815,1cyclictest0-21swapper/321:00:143
564179991815,1cyclictest0-21swapper/319:10:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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