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2026-06-03 - 22:31
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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 Wed Jun 03, 2026 12:46:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
154520799369366,1cyclictest1840839-21kworker/5:207:12:025
154519199362360,1cyclictest1567063-21kworker/3:107:53:023
154519199359358,1cyclictest1567063-21kworker/3:110:40:023
154519199358357,1cyclictest0-21swapper/311:07:023
154519199357356,1cyclictest0-21swapper/310:30:023
154519199357356,1cyclictest0-21swapper/309:01:023
154519199356355,1cyclictest0-21swapper/312:26:023
154519199356355,1cyclictest0-21swapper/309:46:023
154519199356354,1cyclictest0-21swapper/311:21:023
154519199355354,1cyclictest0-21swapper/310:53:023
154519199355354,1cyclictest0-21swapper/307:31:023
154519199354353,1cyclictest1687409-21kworker/3:012:14:023
154519199354353,1cyclictest0-21swapper/312:23:023
154519199354353,1cyclictest0-21swapper/312:04:023
154519199354353,1cyclictest0-21swapper/311:58:023
154519199354353,1cyclictest0-21swapper/311:46:023
154519199354353,1cyclictest0-21swapper/311:41:023
154519199354353,1cyclictest0-21swapper/308:56:023
154519199354353,1cyclictest0-21swapper/308:23:023
154519199353352,1cyclictest1567063-21kworker/3:109:51:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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