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2026-08-10 - 18:20
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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 Mon Aug 10, 2026 12:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
301116999646,39cyclictest79-21ksoftirqd/611:05:166
3011169995214,19cyclictest0-21swapper/608:10:166
3011170995132,19cyclictest874-21mta-sts-daemon08:10:177
3011170995113,19cyclictest0-21swapper/708:00:177
3011168995130,2cyclictest3011162-21cyclictest08:16:315
3011170995011,39cyclictest0-21swapper/709:35:157
3011170995011,39cyclictest0-21swapper/709:35:147
3011164994931,18cyclictest0-21swapper/110:10:161
3011170994811,18cyclictest0-21swapper/712:10:167
3011166994810,19cyclictest0-21swapper/310:35:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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