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2026-05-11 - 11:52
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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
Characteristics of the 10 highest latencies:
System rack7slot1.osadl.org (updated Mon May 11, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29787211552,58sleep20-21swapper/219:09:072
29671211552,24sleep00-21swapper/019:07:360
29632211452,56sleep30-21swapper/319:07:063
29792210545,55sleep10-21swapper/119:09:091
29962996014,25cyclictest0-21swapper/000:12:120
92902450,2sleep117938-21stress00:35:011
92902450,2sleep117938-21stress00:35:001
131722398,12sleep00-21swapper/020:55:390
89822388,12sleep00-21swapper/020:46:480
29965993810,25cyclictest0-21swapper/321:55:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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