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2025-12-18 - 21:06
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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 Thu Dec 18, 2025 12:46:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
217054299375373,1cyclictest2370521-21kworker/4:011:23:014
217056299373372,1cyclictest2312759-21kworker/7:211:22:097
217056299372371,1cyclictest0-21swapper/707:23:027
217054299372370,1cyclictest2143865-21kworker/4:107:42:024
217056299371370,1cyclictest0-21swapper/707:55:027
217056299371369,1cyclictest2312759-21kworker/7:211:53:017
217056299371369,1cyclictest0-21swapper/711:18:017
217056299371369,1cyclictest0-21swapper/710:03:027
217056299371369,1cyclictest0-21swapper/709:02:027
217056299371369,1cyclictest0-21swapper/708:31:027
217054299371370,1cyclictest2143865-21kworker/4:112:20:024
217054299371370,1cyclictest2143865-21kworker/4:109:20:014
217056299370369,1cyclictest0-21swapper/708:45:027
217056299370369,1cyclictest0-21swapper/708:40:017
217056299370368,1cyclictest0-21swapper/707:18:027
217054299370369,1cyclictest2143865-21kworker/4:110:10:014
217054299370369,1cyclictest2143865-21kworker/4:107:22:024
217054299370368,1cyclictest2143865-21kworker/4:108:09:014
217056299369368,1cyclictest0-21swapper/708:56:017
217056299369368,1cyclictest0-21swapper/707:11:027
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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