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2026-06-14 - 22:18
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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 Jun 14, 2026 12:46:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
126940499382380,1cyclictest1429678-21kworker/4:212:11:024
1269428993810,380cyclictest0-21swapper/711:53:027
126940499381380,1cyclictest1543828-21kworker/4:108:36:024
126940499381379,1cyclictest1543828-21kworker/4:109:44:024
126940499381379,1cyclictest1543828-21kworker/4:109:44:024
1269404993810,380cyclictest0-21swapper/409:50:024
1269404993810,380cyclictest0-21swapper/409:10:024
1269404993810,1cyclictest0-21swapper/408:30:024
126940499380379,1cyclictest1543828-21kworker/4:110:13:014
126940499380379,1cyclictest1543828-21kworker/4:109:02:024
126940499380379,1cyclictest1543828-21kworker/4:108:13:024
126940499380379,1cyclictest1543828-21kworker/4:108:13:024
126940499380379,1cyclictest1543828-21kworker/4:107:59:024
126940499380379,1cyclictest1543828-21kworker/4:107:41:024
126940499380379,1cyclictest1429678-21kworker/4:212:33:024
126940499380379,1cyclictest1393567-21kworker/4:011:19:014
126940499380379,1cyclictest0-21swapper/411:22:014
126940499380378,1cyclictest1543828-21kworker/4:109:34:024
126940499380378,1cyclictest1429678-21kworker/4:212:19:024
1269404993800,379cyclictest0-21swapper/411:58:024
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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