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2026-05-14 - 03:25
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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 Thu May 14, 2026 00:46:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2295579993810,380cyclictest0-21swapper/722:36:027
229555099381379,1cyclictest2549426-21kworker/3:320:44:033
229555099381379,1cyclictest0-21swapper/320:05:033
2295550993810,380cyclictest0-21swapper/322:08:033
2295550993810,380cyclictest0-21swapper/321:20:033
2295579993800,1cyclictest0-21swapper/722:47:027
229555099380379,1cyclictest2549426-21kworker/3:320:52:033
2295550993800,1cyclictest0-21swapper/320:22:023
2295550993800,1cyclictest0-21swapper/319:10:033
229552699380379,1cyclictest0-21swapper/022:09:030
229552699380378,1cyclictest0-21swapper/023:44:020
229555099379378,1cyclictest2549426-21kworker/3:320:46:033
229555099379378,1cyclictest2549426-21kworker/3:319:52:013
229555099379377,1cyclictest2549426-21kworker/3:321:06:023
229555099379377,1cyclictest0-21swapper/319:43:033
2295550993790,1cyclictest0-21swapper/320:19:033
229557999378377,1cyclictest0-21swapper/723:36:037
229557999378376,1cyclictest0-21swapper/723:08:027
229557999378376,1cyclictest0-21swapper/721:51:037
229557999378376,1cyclictest0-21swapper/700:18:037
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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