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2025-12-20 - 15:27
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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 Sat Dec 20, 2025 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15145991186,87cyclictest0-21swapper/011:50:160
2346721150,7chrt23465-21sed10:30:370
151539911153,19cyclictest26-21ksoftirqd/112:15:241
15145991098,24cyclictest0-21swapper/009:35:120
151539910613,28cyclictest0-21swapper/112:20:181
15145991056,23cyclictest0-21swapper/011:10:130
151539910413,28cyclictest0-21swapper/107:25:161
151539910413,28cyclictest0-21swapper/107:25:151
151539910412,29cyclictest0-21swapper/109:15:141
151539910313,29cyclictest0-21swapper/109:10:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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