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2026-07-01 - 11:11
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack0slot5.osadl.org (updated Wed Jul 01, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
696763995576,550cyclictest0-21swapper/222:18:458
69675599541538,2cyclictest0-21swapper/021:10:450
69677799523522,1cyclictest0-21swapper/622:13:4512
69675899486486,0cyclictest878889-21kworker/1:2+i915-unordered22:38:451
69675899483482,1cyclictest0-21swapper/122:17:451
69679399476474,2cyclictest839831-21kworker/10:2+i915-unordered22:18:452
69678599470469,1cyclictest757508-21kworker/8:1+i915-unordered21:10:4514
69680599466466,0cyclictest0-21swapper/1219:32:454
6967779946412,30cyclictest0-21swapper/622:32:0712
6967709946419,30cyclictest0-21swapper/421:22:0710
6967829946216,30cyclictest0-21swapper/722:32:3013
6967829946014,30cyclictest0-21swapper/720:32:2913
6967829945815,30cyclictest0-21swapper/721:23:0813
69681599457457,0cyclictest0-21swapper/1522:32:457
69677499456454,1cyclictest579361-21kworker/5:1+i915-unordered20:29:4511
69677499455452,2cyclictest614878-21kworker/5:0+events23:17:0711
69680099452452,0cyclictest69750irq/159-i91519:32:453
696815994517,28cyclictest0-21swapper/1522:29:457
69677499451451,0cyclictest0-21swapper/500:07:4511
6967709945125,28cyclictest0-21swapper/419:07:0710
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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