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2026-09-11 - 12:00
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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 Fri Sep 11, 2026 00:46:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
372190399371370,1cyclictest3785652-21kworker/2:321:35:022
372190399371370,1cyclictest0-21swapper/221:47:012
372190399370368,1cyclictest3829134-21kworker/2:022:05:022
372190399370368,1cyclictest3806358-21ssh21:19:012
372190399369367,1cyclictest3794891-21diskmemload21:13:022
372190399368367,1cyclictest0-21swapper/222:43:022
372190399368366,1cyclictest3785652-21kworker/2:321:21:012
372190399368366,1cyclictest3785652-21kworker/2:321:21:012
372190399368366,1cyclictest0-21swapper/222:49:022
372190399368366,1cyclictest0-21swapper/222:49:012
372189899368367,1cyclictest0-21swapper/123:33:011
372190399367366,1cyclictest3956384-21kworker/2:223:55:022
372190399367366,1cyclictest0-21swapper/223:21:022
372190399367364,2cyclictest3829134-21kworker/2:022:23:012
372189899367364,2cyclictest0-21swapper/119:28:011
372190399366365,1cyclictest0-21swapper/223:03:022
372190399366364,1cyclictest3695449-21kworker/2:119:15:022
372190399365364,1cyclictest0-21swapper/223:43:012
372190399365364,1cyclictest0-21swapper/222:32:022
372190399365363,1cyclictest3956384-21kworker/2:223:49:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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