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2026-06-09 - 22:15
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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 Tue Jun 09, 2026 12:46:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
369623199380378,1cyclictest3745197-21kworker/0:208:55:010
369623199380378,1cyclictest3658249-21kworker/0:108:24:010
369623199379378,1cyclictest3658249-21kworker/0:108:28:020
369623199379377,1cyclictest0-21swapper/010:17:010
369623199378377,1cyclictest3658249-21kworker/0:108:08:010
369623199378376,1cyclictest3658249-21kworker/0:107:50:020
369623199377375,2cyclictest3658249-21kworker/0:107:12:020
369623199377375,1cyclictest3745197-21kworker/0:208:46:020
369623199377375,1cyclictest3658249-21kworker/0:107:44:010
369623199375373,1cyclictest3745197-21kworker/0:209:21:020
369623999374372,1cyclictest0-21swapper/111:45:021
369623199374373,1cyclictest3658249-21kworker/0:108:18:010
369623199374372,1cyclictest3793320-21kworker/0:109:57:010
369623199373372,1cyclictest3808383-21kworker/0:011:27:010
369623199373372,1cyclictest3808383-21kworker/0:011:19:010
369623199373372,1cyclictest3745197-21kworker/0:209:14:010
369623199372371,1cyclictest3808383-21kworker/0:012:11:020
369623199372371,1cyclictest3808383-21kworker/0:010:43:020
369623199372371,1cyclictest3808383-21kworker/0:010:22:020
369623199372371,1cyclictest3745197-21kworker/0:209:32:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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