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2026-01-02 - 16:23
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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 Fri Jan 02, 2026 12:46:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
418450399381379,2cyclictest81820-21kworker/5:010:02:025
418450399381379,2cyclictest39704-21kworker/5:208:31:025
418450399381379,1cyclictest27686-21kworker/5:008:23:025
418450399381379,1cyclictest230759-21kworker/5:207:57:025
418450399381379,1cyclictest114929-21kworker/5:112:18:035
418450399381379,1cyclictest114929-21kworker/5:112:13:025
4184503993810,380cyclictest0-21swapper/511:11:025
4184503993810,380cyclictest0-21swapper/507:44:025
418446499381380,1cyclictest4191010-21kworker/0:307:38:020
418446499381379,1cyclictest90694-21kworker/0:210:07:020
418446499381379,1cyclictest4191010-21kworker/0:309:44:020
418446499381379,1cyclictest4191010-21kworker/0:308:43:020
418446499381379,1cyclictest4191010-21kworker/0:308:07:020
4184464993810,380cyclictest0-21swapper/011:24:020
418450399380379,1cyclictest81820-21kworker/5:010:08:035
418450399380379,1cyclictest39704-21kworker/5:208:57:025
418450399380379,1cyclictest230759-21kworker/5:207:47:035
418450399380379,1cyclictest230759-21kworker/5:207:47:025
418450399380379,1cyclictest114929-21kworker/5:110:48:025
418450399380379,1cyclictest0-21swapper/512:24:025
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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