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2026-08-16 - 21:50
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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 Aug 16, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
524899967,71cyclictest0-21swapper/010:05:150
281302960,6chrt28132-21if_err_enp3s009:40:341
5256999368,12cyclictest26-21ksoftirqd/111:35:111
384129341,37sleep10-21swapper/107:05:211
5256999142,44cyclictest0-21swapper/108:45:141
5248999050,24cyclictest14-21ksoftirqd/011:40:100
5248999050,24cyclictest14-21ksoftirqd/011:40:100
74952820,5sleep0171rcuc/010:15:130
74952820,5sleep0171rcuc/010:15:130
434228221,44sleep00-21swapper/007:05:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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