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2026-05-13 - 01:23
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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 Tue May 12, 2026 12:46:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1831028993840,2cyclictest1897649-21systemd-userwor08:59:025
1831028993810,380cyclictest0-21swapper/511:55:025
1831028993810,380cyclictest0-21swapper/508:30:025
1831028993810,1cyclictest0-21swapper/512:30:025
1831028993800,379cyclictest0-21swapper/509:34:025
1831028993800,379cyclictest0-21swapper/507:36:025
1831028993800,1cyclictest0-21swapper/511:15:035
183102899379378,1cyclictest1827860-21kworker/5:207:24:025
183102899378377,1cyclictest1827860-21kworker/5:207:17:025
183102899378377,1cyclictest0-21swapper/510:08:025
183102899378377,1cyclictest0-21swapper/509:49:025
183102899378376,1cyclictest0-21swapper/511:49:025
183101599378377,1cyclictest1882965-21kworker/3:209:30:023
183101599378377,1cyclictest1882965-21kworker/3:209:05:023
183102899377376,1cyclictest1964187-21kworker/5:112:02:025
183102899377376,1cyclictest0-21swapper/511:31:025
183102899377376,1cyclictest0-21swapper/507:54:025
183101599377375,1cyclictest0-21swapper/308:11:033
183101599377375,1cyclictest0-21swapper/308:05:033
183102899376375,1cyclictest0-21swapper/508:48:025
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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