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2026-06-01 - 08:44
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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 Mon Jun 01, 2026 00:46:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
47611599380379,1cyclictest753650-21kworker/4:200:22:034
47611599380379,1cyclictest491964-21kworker/4:022:07:024
47611599380379,1cyclictest491964-21kworker/4:022:03:024
47611599380378,1cyclictest491964-21kworker/4:021:54:014
47611599378376,1cyclictest491964-21kworker/4:021:43:014
47611599378376,1cyclictest491964-21kworker/4:021:39:014
47611599377376,1cyclictest0-21swapper/400:30:024
47611599377376,1cyclictest0-21swapper/400:01:034
47611599377375,1cyclictest491964-21kworker/4:023:59:034
47611599377375,1cyclictest0-21swapper/423:35:024
47611599376375,1cyclictest491964-21kworker/4:021:24:034
47611599376375,1cyclictest491964-21kworker/4:021:24:034
47611599376375,1cyclictest0-21swapper/423:47:024
47611599376375,1cyclictest0-21swapper/423:02:024
47611599376375,1cyclictest0-21swapper/421:45:024
47611599376375,1cyclictest0-21swapper/421:18:014
47611599376374,1cyclictest491964-21kworker/4:023:42:024
47611599375374,1cyclictest780095-21kworker/4:000:35:024
47611599375374,1cyclictest491964-21kworker/4:022:53:024
47611599375374,1cyclictest0-21swapper/423:21:034
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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