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2026-06-20 - 14:28
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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
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Sat Jun 20, 2026 00:46:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318436024880,3sleep30-21swapper/319:05:133
318517224520,3sleep10-21swapper/119:05:191
318441323900,5sleep442-21ksoftirqd/419:05:144
318647799381380,1cyclictest0-21swapper/422:13:024
3186477993810,1cyclictest0-21swapper/400:30:024
3186477993810,1cyclictest0-21swapper/400:30:024
318647799380379,1cyclictest0-21swapper/421:54:014
318647799379378,1cyclictest0-21swapper/423:57:024
318647799377376,1cyclictest0-21swapper/400:07:024
318647799376375,1cyclictest3324897-21kworker/4:022:18:024
318647799376375,1cyclictest3269203-21kworker/4:222:00:024
318647799376375,1cyclictest0-21swapper/423:10:024
318647799375374,1cyclictest3256488-21kworker/4:021:14:024
318647799375374,1cyclictest0-21swapper/423:22:024
318647799374373,1cyclictest3269203-21kworker/4:221:47:024
318647799373372,1cyclictest3436001-21kworker/4:223:45:024
318647799373372,1cyclictest0-21swapper/421:39:024
318647799373372,1cyclictest0-21swapper/421:39:024
318647799372371,1cyclictest3360264-21kworker/4:123:05:024
318647799372371,1cyclictest0-21swapper/421:16:024
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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