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2026-07-13 - 11:49
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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 Jul 13, 2026 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3350372991160,115cyclictest0-21swapper/420:35:164
3350374991000,100cyclictest0-21swapper/520:55:205
3350372998911,59cyclictest1-21systemd21:30:014
3350372997012,39cyclictest3462859-21perf22:39:554
3350372996526,39cyclictest0-21swapper/421:14:014
335037299646,39cyclictest3412155-21ntpq21:00:174
3350372996425,39cyclictest0-21swapper/420:23:394
3350372996424,39cyclictest0-21swapper/422:23:084
3350372996323,39cyclictest0-21swapper/400:06:394
335037299623,19cyclictest0-21swapper/422:15:214
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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