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2025-12-30 - 15:41
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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 Dec 30, 2025 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178719911410,85cyclictest0-21swapper/110:30:121
178719911365,33cyclictest26-21ksoftirqd/107:55:141
178719911210,79cyclictest0-21swapper/111:10:131
178719910814,76cyclictest0-21swapper/108:10:131
178719910811,76cyclictest0-21swapper/110:50:151
178719910811,76cyclictest0-21swapper/110:20:131
178719910810,77cyclictest0-21swapper/111:40:151
17871991079,78cyclictest0-21swapper/111:55:131
17871991079,78cyclictest0-21swapper/111:55:121
178719910714,74cyclictest0-21swapper/107:15:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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