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2026-06-20 - 14:11
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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 50 highest latencies:
System rackcslot6.osadl.org (updated Sat Jun 20, 2026 00:46:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318436024880,3sleep30-21swapper/319:05:133
318517224520,3sleep10-21swapper/119:05:191
318441323900,5sleep442-21ksoftirqd/419:05:144
318647799381380,1cyclictest0-21swapper/422:13:024
3186477993810,1cyclictest0-21swapper/400:30:024
3186477993810,1cyclictest0-21swapper/400:30:024
318647799380379,1cyclictest0-21swapper/421:54:014
318647799379378,1cyclictest0-21swapper/423:57:024
318647799377376,1cyclictest0-21swapper/400:07:024
318647799376375,1cyclictest3324897-21kworker/4:022:18:024
318647799376375,1cyclictest3269203-21kworker/4:222:00:024
318647799376375,1cyclictest0-21swapper/423:10:024
318647799375374,1cyclictest3256488-21kworker/4:021:14:024
318647799375374,1cyclictest0-21swapper/423:22:024
318647799374373,1cyclictest3269203-21kworker/4:221:47:024
318647799373372,1cyclictest3436001-21kworker/4:223:45:024
318647799373372,1cyclictest0-21swapper/421:39:024
318647799373372,1cyclictest0-21swapper/421:39:024
318647799372371,1cyclictest3360264-21kworker/4:123:05:024
318647799372371,1cyclictest0-21swapper/421:16:024
318647799371370,1cyclictest3324897-21kworker/4:022:33:024
318647799371370,1cyclictest3211365-21kworker/4:120:35:024
318647799371370,1cyclictest0-21swapper/423:54:024
318647799370369,1cyclictest3436001-21kworker/4:200:13:024
318647799370368,1cyclictest3360264-21kworker/4:122:39:024
318647799369368,1cyclictest3211365-21kworker/4:120:45:024
318647799369368,1cyclictest0-21swapper/422:20:024
318647799369368,1cyclictest0-21swapper/419:36:024
318647799369368,1cyclictest0-21swapper/400:01:024
318647799368367,1cyclictest3269203-21kworker/4:221:31:024
318647799368367,1cyclictest3256488-21kworker/4:021:07:024
318647799368367,1cyclictest3196259-21kworker/4:219:54:024
318647799368367,1cyclictest0-21swapper/422:48:024
318647799367366,1cyclictest3196259-21kworker/4:219:26:024
318647799367366,1cyclictest0-21swapper/423:32:014
318647799367366,1cyclictest0-21swapper/421:40:024
318647799366365,1cyclictest3436001-21kworker/4:200:18:014
318647799366365,1cyclictest3196259-21kworker/4:219:59:024
318647799366365,1cyclictest0-21swapper/422:53:014
318645199366365,1cyclictest0-21swapper/121:15:021
318648599365363,1cyclictest0-21swapper/519:37:025
318647799365364,1cyclictest3269203-21kworker/4:221:28:024
318647799365364,1cyclictest0-21swapper/419:45:024
318647799364363,1cyclictest3269203-21kworker/4:221:22:024
318647799364363,1cyclictest0-21swapper/421:55:024
318647799364363,1cyclictest0-21swapper/400:21:024
318647799364362,1cyclictest3250231-21kworker/4:220:59:024
318647799363362,1cyclictest3436001-21kworker/4:223:43:024
318647799363362,1cyclictest3360264-21kworker/4:123:01:024
318647799363362,1cyclictest3211365-21kworker/4:120:30:024
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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