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2026-06-04 - 18:33
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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 rackfslot7.osadl.org (updated Thu Jun 04, 2026 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
766658997314,39cyclictest0-21swapper/508:00:175
766658997314,39cyclictest0-21swapper/508:00:175
766657995332,20cyclictest795829-21switchtime08:00:244
766657995332,20cyclictest795829-21switchtime08:00:244
766660995214,19cyclictest0-21swapper/707:35:147
766659995214,19cyclictest0-21swapper/611:10:146
766660995113,19cyclictest0-21swapper/711:35:147
766660995113,19cyclictest0-21swapper/707:15:167
766656995112,39cyclictest0-21swapper/308:10:163
766653995113,19cyclictest0-21swapper/010:10:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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