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2026-05-02 - 14:25
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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 Sat May 02, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30157982700,2sleep0221rcuc/021:25:180
28548562280,1sleep30-21swapper/319:20:573
2833815992723,2cyclictest2945177-21turbostat20:34:593
2833815992623,1cyclictest0-21swapper/323:55:013
2833815992623,1cyclictest0-21swapper/323:05:173
2833815992623,1cyclictest0-21swapper/320:20:003
2833815992622,1cyclictest0-21swapper/300:10:183
2833815992522,1cyclictest0-21swapper/320:10:003
2833815992521,1cyclictest0-21swapper/320:15:003
2833815992321,1cyclictest0-21swapper/322:20:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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