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2026-07-27 - 01:22
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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 Sun Jul 26, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3593249995719,19cyclictest3748846-21chrt11:50:184
3593251995233,19cyclictest0-21swapper/608:00:176
3593247995214,19cyclictest0-21swapper/209:30:182
3593246995214,19cyclictest0-21swapper/111:20:161
3593246995113,19cyclictest0-21swapper/112:00:171
3593246995113,19cyclictest0-21swapper/109:10:201
359324999489,39cyclictest0-21swapper/412:05:164
3593249994810,19cyclictest0-21swapper/411:55:144
3593246994811,18cyclictest0-21swapper/108:15:161
3593246994810,19cyclictest0-21swapper/110:25:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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