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2026-06-21 - 12:25
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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 Sun Jun 21, 2026 00:46:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
354730699389388,1cyclictest3572149-21kworker/6:020:12:026
354730699389388,1cyclictest3572149-21kworker/6:020:08:026
354730699382380,2cyclictest3544133-21kworker/6:119:43:016
3547277993810,380cyclictest0-21swapper/219:58:022
3547277993810,380cyclictest0-21swapper/219:43:022
354730699380379,1cyclictest3572149-21kworker/6:019:58:036
354730699380379,1cyclictest3572149-21kworker/6:019:54:036
354730699380378,2cyclictest3572149-21kworker/6:020:54:026
354730699380378,1cyclictest3544133-21kworker/6:119:24:036
354727799380379,1cyclictest3795431-21kworker/2:019:16:032
3547277993800,379cyclictest0-21swapper/219:24:022
354731399362361,1cyclictest0-21swapper/721:30:037
354731399361359,1cyclictest0-21swapper/723:11:027
354731399359358,1cyclictest3865977-21kworker/7:200:35:027
354731399359358,1cyclictest3865977-21kworker/7:200:35:027
3547313993590,358cyclictest0-21swapper/722:31:037
354731399357356,1cyclictest0-21swapper/722:35:027
354731399357355,1cyclictest3605019-21kworker/7:321:52:027
354731399355354,1cyclictest3715608-21kworker/7:023:00:037
354731399355353,2cyclictest3605019-21kworker/7:322:20:037
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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