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2026-06-12 - 10:47
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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 Jun 12, 2026 00:46:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
316566993820,381cyclictest383534-21kworker/5:121:34:035
316566993810,380cyclictest0-21swapper/522:02:025
31654499381379,1cyclictest313403-21kworker/2:020:32:032
31656699380378,1cyclictest580317-21kworker/5:000:17:025
31656699380378,1cyclictest383534-21kworker/5:122:41:025
316566993800,1cyclictest0-21swapper/522:29:025
31654499380379,1cyclictest313403-21kworker/2:021:02:022
316544993800,379cyclictest0-21swapper/219:50:022
31656699379377,1cyclictest271912-21kworker/5:319:55:025
31656699378377,1cyclictest271912-21kworker/5:319:15:025
31654499378377,1cyclictest0-21swapper/220:47:022
31656699377375,1cyclictest271912-21kworker/5:320:33:035
31654499377376,1cyclictest313403-21kworker/2:020:51:022
31654499377376,1cyclictest313403-21kworker/2:020:37:022
31656699376375,1cyclictest271912-21kworker/5:319:33:025
31656699376374,1cyclictest580317-21kworker/5:023:51:025
31656699376374,1cyclictest383534-21kworker/5:121:09:025
31656699376374,1cyclictest383534-21kworker/5:121:09:025
31656699376374,1cyclictest271912-21kworker/5:319:44:025
31656699376374,1cyclictest271912-21kworker/5:319:44:025
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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