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2026-08-07 - 05:00
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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 Fri Aug 07, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
97499911616,90cyclictest29658-21kworker/1:120:35:141
97499911177,22cyclictest26-21ksoftirqd/120:05:141
97429910675,20cyclictest14-21ksoftirqd/020:25:100
97429910675,20cyclictest14-21ksoftirqd/020:25:100
97429910412,77cyclictest0-21swapper/000:35:130
97429910374,18cyclictest14-21ksoftirqd/000:10:110
97429910372,19cyclictest14-21ksoftirqd/019:40:120
97499910261,30cyclictest26-21ksoftirqd/123:15:151
9568210225,31sleep10-21swapper/119:09:341
97429910011,31cyclictest0-21swapper/020:20:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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