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2026-08-26 - 14:20
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Wed Aug 26, 2026 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310299912811,103cyclictest0-21swapper/011:35:140
31029991149,83cyclictest0-21swapper/008:00:130
310299911410,80cyclictest0-21swapper/007:50:120
310299911366,28cyclictest14-21ksoftirqd/012:35:140
310299911210,80cyclictest0-21swapper/010:00:130
310329911011,43cyclictest25905-21latency_hist09:55:021
310299910958,31cyclictest14-21ksoftirqd/009:35:140
310299910551,34cyclictest0-21swapper/007:55:260
310329910314,29cyclictest0-21swapper/111:10:121
310299910341,41cyclictest14-21ksoftirqd/009:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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