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2026-03-23 - 11:59
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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 Mon Mar 23, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
114929911614,32cyclictest0-21swapper/020:45:110
114929911413,31cyclictest0-21swapper/023:10:100
114929911011,32cyclictest0-21swapper/023:35:110
114929911011,30cyclictest0-21swapper/000:10:110
114959910979,17cyclictest26-21ksoftirqd/123:55:161
114929910913,32cyclictest0-21swapper/020:55:130
114959910877,16cyclictest26-21ksoftirqd/100:20:121
114929910813,27cyclictest0-21swapper/022:15:110
114929910810,28cyclictest0-21swapper/022:55:100
114959910776,19cyclictest26-21ksoftirqd/119:45:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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