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2026-07-19 - 13:43
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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 Jul 19, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
114849913513,31cyclictest0-21swapper/121:25:241
114799911578,22cyclictest14-21ksoftirqd/020:40:150
114799911271,28cyclictest14-21ksoftirqd/021:20:250
114799911075,22cyclictest14-21ksoftirqd/021:30:130
114799911074,23cyclictest14-21ksoftirqd/023:00:140
114799910977,21cyclictest14-21ksoftirqd/021:50:120
114799910971,26cyclictest14-21ksoftirqd/000:20:150
114799910971,26cyclictest14-21ksoftirqd/000:20:150
114799910712,81cyclictest0-21swapper/022:15:120
114799910611,79cyclictest0-21swapper/020:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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