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2026-06-09 - 00:13
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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 08, 2026 12:46:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3336221993810,380cyclictest0-21swapper/207:17:022
3336221993810,1cyclictest0-21swapper/212:22:022
333620999381380,1cyclictest3454374-21kworker/1:112:31:021
3336209993810,380cyclictest0-21swapper/111:36:031
3336209993810,380cyclictest0-21swapper/109:32:021
333622199380378,1cyclictest3466288-21kworker/2:010:59:022
3336221993800,380cyclictest0-21swapper/208:54:022
3336221993800,379cyclictest0-21swapper/209:41:032
3336221993800,1cyclictest0-21swapper/212:26:022
3336221993800,1cyclictest0-21swapper/209:57:032
3336209993800,379cyclictest0-21swapper/108:51:021
3336209993800,1cyclictest0-21swapper/112:29:021
3336209993800,1cyclictest0-21swapper/110:07:021
3336209993800,1cyclictest0-21swapper/110:07:021
3336209993800,1cyclictest0-21swapper/109:27:021
3336209993800,1cyclictest0-21swapper/107:41:031
3336209993800,1cyclictest0-21swapper/107:12:021
3336221993790,379cyclictest0-21swapper/212:18:022
3336221993790,379cyclictest0-21swapper/212:07:022
3336221993790,379cyclictest0-21swapper/209:21:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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