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2026-05-27 - 16:34
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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 Wed May 27, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20662921220,1sleep30-21swapper/308:50:183
964512260,1sleep30-21swapper/307:25:183
73400992623,1cyclictest0-21swapper/311:20:003
73400992522,1cyclictest0-21swapper/310:00:043
73400992522,1cyclictest0-21swapper/309:30:123
73400992522,1cyclictest0-21swapper/307:54:593
73400992521,1cyclictest0-21swapper/307:44:593
73400992422,1cyclictest0-21swapper/311:00:193
73400992421,1cyclictest0-21swapper/310:40:013
73400992320,1cyclictest0-21swapper/310:10:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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