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2026-05-24 - 11:33
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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 Sun May 24, 2026 00:46:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
186143299380377,1cyclictest2171735-21kworker/3:120:59:013
186145599343342,1cyclictest0-21swapper/623:20:016
186145599343341,1cyclictest0-21swapper/600:01:026
186145599342340,1cyclictest1957779-21kworker/6:222:33:026
186145599341340,1cyclictest0-21swapper/621:57:016
186145599341340,1cyclictest0-21swapper/600:20:036
186145599341339,1cyclictest2052772-21kworker/6:123:54:016
186145599341339,1cyclictest0-21swapper/622:12:016
186145599341339,1cyclictest0-21swapper/622:12:016
186145599340339,1cyclictest1861299-21kworker/6:121:18:026
186145599340339,1cyclictest0-21swapper/623:32:026
186145599340339,1cyclictest0-21swapper/622:25:016
186145599340339,1cyclictest0-21swapper/622:08:026
186145599340339,1cyclictest0-21swapper/621:35:016
186145599340339,1cyclictest0-21swapper/621:22:026
186145599340339,1cyclictest0-21swapper/600:25:016
186145599340339,1cyclictest0-21swapper/600:06:026
186145599340338,1cyclictest2052772-21kworker/6:123:42:016
186145599340338,1cyclictest0-21swapper/622:51:016
186145599340338,1cyclictest0-21swapper/622:44:026
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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