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2026-06-23 - 08:34
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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 23, 2026 00:46:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6832799393391,1cyclictest111254-21kworker/3:023:36:023
6832799391390,1cyclictest111254-21kworker/3:023:05:013
6832799391390,1cyclictest111254-21kworker/3:021:55:023
6832799391389,1cyclictest111254-21kworker/3:021:44:013
6832799390389,1cyclictest111254-21kworker/3:023:23:013
6832799389386,2cyclictest0-21swapper/323:10:023
6832799388387,1cyclictest111254-21kworker/3:021:36:023
6832799388385,2cyclictest97550irq/166-enp0s3123:50:033
6832799387386,1cyclictest111254-21kworker/3:022:25:013
6832799387386,1cyclictest111254-21kworker/3:022:09:013
6832799387386,1cyclictest0-21swapper/322:14:023
6832799387386,1cyclictest0-21swapper/319:32:013
6832799387385,1cyclictest0-21swapper/319:40:013
6832799386385,1cyclictest111254-21kworker/3:023:44:023
6832799386385,1cyclictest111254-21kworker/3:022:21:013
6832799386385,1cyclictest0-21swapper/323:47:033
6832799386385,1cyclictest0-21swapper/322:44:023
6832799385384,1cyclictest111254-21kworker/3:022:58:033
6832799384383,1cyclictest379746-21kworker/3:100:32:023
6832799383382,1cyclictest111254-21kworker/3:021:10:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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