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2026-05-25 - 00:57
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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 rack1slot8.osadl.org (updated Sun May 24, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207112655635,12sleep10-21swapper/107:05:341
2118599442390,15cyclictest4031-21latency07:50:190
21186994373,7cyclictest21490-21cpu07:10:141
2118599407341,12cyclictest21336-21munin-node07:10:130
2118699352320,17cyclictest0-21swapper/107:50:201
2286991120,4rtkit-daemon2285-21rtkit-daemon11:33:030
2286991100,4rtkit-daemon2285-21rtkit-daemon12:03:331
211859910912,91cyclictest0-21swapper/008:28:580
211859910312,85cyclictest0-21swapper/009:52:590
21186999516,60cyclictest0-21swapper/108:31:591
21186999018,43cyclictest0-21swapper/111:34:591
21186999017,31cyclictest0-21swapper/112:08:581
228699880,12rtkit-daemon2285-21rtkit-daemon09:13:351
2118699886,41cyclictest0-21swapper/110:34:591
21186998817,34cyclictest0-21swapper/111:25:001
21186998817,30cyclictest0-21swapper/110:05:581
21186998815,29cyclictest0-21swapper/111:45:591
21186998814,55cyclictest0-21swapper/111:05:001
21185998846,36cyclictest0-21swapper/012:11:590
21186998619,28cyclictest0-21swapper/111:40:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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