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2026-07-22 - 23:35
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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 Jul 22, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30904424380,1sleep0309036-21ntpq10:40:240
6067992824,2cyclictest0-21swapper/311:55:003
6067992618,6cyclictest319169-21sleep10:50:003
606799251,9cyclictest104370-21turbostat08:25:003
606799247,13cyclictest33785-21turbostat07:34:553
6067992421,1cyclictest0-21swapper/312:20:083
6067992421,1cyclictest0-21swapper/312:10:163
6067992320,1cyclictest0-21swapper/311:40:183
6067992320,1cyclictest0-21swapper/311:20:003
606799220,2cyclictest0-21swapper/308:10:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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