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2026-07-17 - 20:24
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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 Jul 17, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228079911875,31cyclictest14-21ksoftirqd/012:10:150
228079911711,91cyclictest0-21swapper/008:50:140
228079911511,91cyclictest0-21swapper/008:55:130
228079911411,87cyclictest0-21swapper/007:20:160
228079911411,82cyclictest0-21swapper/011:15:130
228079911316,81cyclictest0-21swapper/011:25:120
228079911113,81cyclictest0-21swapper/012:25:120
228079911111,81cyclictest0-21swapper/012:35:130
228079911013,83cyclictest0-21swapper/007:10:110
228079911012,81cyclictest0-21swapper/011:00:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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