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2026-01-11 - 07:09
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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 rack1slot8.osadl.org (updated Sun Jan 11, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2383999915836,47cyclictest0-21swapper/019:11:330
2384099833752,51cyclictest0-21swapper/119:11:321
235802754734,14sleep10-21swapper/119:07:431
235802754734,14sleep10-21swapper/119:07:431
234132665643,15sleep00-21swapper/019:06:060
234132665643,15sleep00-21swapper/019:06:060
23839996015,552cyclictest0-21swapper/019:40:250
2384099494414,45cyclictest3508-21timerwakeupswit19:40:251
238409910518,69cyclictest0-21swapper/122:34:591
253492970,4sleep125348-21yum20:40:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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