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2025-07-13 - 10:01
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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 Jul 13, 2025 00:46:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150253399381379,1cyclictest2986819-21kworker/0:021:22:010
1502533993810,380cyclictest0-21swapper/023:48:020
150253399380379,1cyclictest2986819-21kworker/0:020:05:030
150253399380379,1cyclictest2986819-21kworker/0:019:44:010
150253399380379,1cyclictest1727618-21kworker/0:300:18:020
1502533993800,380cyclictest0-21swapper/021:25:030
1502533993800,379cyclictest0-21swapper/023:22:020
1502533993800,379cyclictest0-21swapper/022:32:030
150255399379376,2cyclictest1701650-21kworker/3:000:06:033
150253399379378,1cyclictest2986819-21kworker/0:019:16:030
150253399379378,1cyclictest0-21swapper/019:29:030
150255399378377,1cyclictest1701650-21kworker/3:000:11:033
150255399378376,1cyclictest0-21swapper/300:19:033
150253399378377,1cyclictest2986819-21kworker/0:019:56:020
150253399378377,1cyclictest0-21swapper/000:03:030
150253399378376,1cyclictest2986819-21kworker/0:021:02:020
150255399377376,1cyclictest1666074-21kworker/3:122:54:033
150255399377376,1cyclictest0-21swapper/322:05:033
150255399377376,1cyclictest0-21swapper/319:10:033
150255399377376,1cyclictest0-21swapper/300:32:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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