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2025-12-11 - 11:10
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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 Thu Dec 11, 2025 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180749911513,87cyclictest0-21swapper/022:20:110
180749910860,35cyclictest14-21ksoftirqd/000:10:150
180749910655,38cyclictest0-21swapper/000:35:140
180749910654,31cyclictest14-21ksoftirqd/023:55:120
180749910339,50cyclictest14-21ksoftirqd/019:25:140
180749910254,29cyclictest14-21ksoftirqd/022:35:130
180749910051,33cyclictest0-21swapper/021:30:160
18074999947,34cyclictest17902sleep021:25:130
18074999812,61cyclictest0-21swapper/023:00:110
18074999737,39cyclictest14-21ksoftirqd/020:30:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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