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2026-05-18 - 08:38
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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 Mon May 18, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3117021200,5chrt0-21swapper/022:30:360
23804991038,78cyclictest0-21swapper/023:20:130
238119910237,57cyclictest0-21swapper/100:05:131
23804991007,73cyclictest0-21swapper/021:40:120
23811999914,22cyclictest0-21swapper/119:55:151
23811999912,23cyclictest0-21swapper/123:25:121
23804999812,64cyclictest0-21swapper/020:05:140
23804999812,64cyclictest0-21swapper/020:05:140
2380499972,69cyclictest157722sleep021:46:430
23811999512,24cyclictest0-21swapper/100:15:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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