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2026-01-11 - 19:09
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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 Sun Jan 11, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
185329911912,90cyclictest0-21swapper/011:10:120
185329911670,36cyclictest0-21swapper/010:00:220
185329911310,25cyclictest0-21swapper/011:50:120
17938211236,60sleep10-21swapper/107:05:401
16791211226,37sleep00-21swapper/007:05:150
18532991099,75cyclictest0-21swapper/008:15:140
185329910957,36cyclictest0-21swapper/008:50:120
185329910755,33cyclictest14-21ksoftirqd/010:50:130
185329910753,33cyclictest0-21swapper/012:35:120
185329910010,69cyclictest0-21swapper/009:55:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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