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2026-07-27 - 20:40
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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 Mon Jul 27, 2026 12:46:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15890223870,5sleep40-21swapper/407:05:174
16082999373371,1cyclictest191628-21kworker/7:108:14:027
16081499370368,1cyclictest221781-21kworker/5:010:17:025
16080899352350,1cyclictest957486-21kworker/4:207:35:024
16080899349348,1cyclictest0-21swapper/408:15:024
16080899348346,1cyclictest0-21swapper/412:00:024
16080899348346,1cyclictest0-21swapper/411:33:024
16080899348346,1cyclictest0-21swapper/410:27:024
16080899347345,1cyclictest0-21swapper/410:01:024
16080899346345,1cyclictest0-21swapper/410:53:024
16080899346345,1cyclictest0-21swapper/410:18:024
16080899346345,1cyclictest0-21swapper/409:59:024
16080899346345,1cyclictest0-21swapper/409:59:024
16080899346345,1cyclictest0-21swapper/407:53:034
16080899346344,1cyclictest0-21swapper/412:21:024
16080899346344,1cyclictest0-21swapper/409:53:024
16080899346344,1cyclictest0-21swapper/409:21:024
16080899346344,1cyclictest0-21swapper/408:58:034
16080899345344,1cyclictest0-21swapper/411:27:024
16080899345344,1cyclictest0-21swapper/411:27:024
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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