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2026-03-16 - 04:08
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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 Mar 16, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4205342940,1sleep00-21swapper/021:20:150
249563993316,14cyclictest573323-21sleep23:20:003
249563993027,1cyclictest0-21swapper/321:20:013
249563992623,1cyclictest0-21swapper/300:05:003
24956399261,14cyclictest0-21swapper/322:05:003
249563992320,1cyclictest0-21swapper/319:15:013
249563992219,1cyclictest0-21swapper/323:30:013
249563992211,0cyclictest0-21swapper/323:25:013
24956399219,1cyclictest0-21swapper/300:35:143
249563992117,1cyclictest0-21swapper/319:30:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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