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2026-08-11 - 21:57
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Tue Aug 11, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2747821270,4chrt0-21swapper/111:05:191
74769911650,20cyclictest14-21ksoftirqd/012:10:140
74769911453,15cyclictest14-21ksoftirqd/008:30:130
74769910835,17cyclictest0-21swapper/011:40:120
74769910715,36cyclictest0-21swapper/008:25:150
74769910423,22cyclictest0-21swapper/008:45:130
74769910332,19cyclictest0-21swapper/008:05:130
728729826,30sleep10-21swapper/107:09:271
7476999664,26cyclictest14-21ksoftirqd/010:15:130
7476999568,13cyclictest14-21ksoftirqd/010:25:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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