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2026-03-28 - 18:30
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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 rack0slot0.osadl.org (updated Sat Mar 28, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313021090,0sleep40-21swapper/412:01:254
292462830,1sleep726705-21kworker/7:212:19:327
123422770,0sleep10-21swapper/111:44:071
103102760,1sleep60-21swapper/611:57:516
86762740,0sleep50-21swapper/509:41:165
158462740,1sleep30-21swapper/310:57:283
3282730,1sleep20-21swapper/210:50:222
197622720,1sleep7771ktimersoftd/710:58:047
326702710,0sleep60-21swapper/612:15:146
276502710,0sleep50-21swapper/510:30:535
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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