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2026-09-03 - 01:18
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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 Sep 02, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24289992490,1sleep00-21swapper/012:10:010
1990154993431,1cyclictest0-21swapper/311:45:003
1990154993431,1cyclictest0-21swapper/308:20:003
1990154993431,1cyclictest0-21swapper/308:20:003
1990154993229,1cyclictest0-21swapper/309:40:013
1990154992926,1cyclictest0-21swapper/312:40:013
1990154992926,1cyclictest0-21swapper/310:20:313
1990154992825,1cyclictest0-21swapper/310:30:193
1990154992825,1cyclictest0-21swapper/309:20:233
1990154992825,1cyclictest0-21swapper/308:00:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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