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2025-12-10 - 04:58
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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 Wed Dec 10, 2025 00:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1866199961840,45cyclictest5008-21munin-node20:00:181
186062908884,16sleep00-21swapper/019:09:470
1866099887863,18cyclictest15-21rcuop/120:00:190
172192647619,13sleep10-21swapper/119:05:171
1866099417340,71cyclictest0-21swapper/019:10:130
1866199347290,32cyclictest0-21swapper/119:10:131
18661991278,77cyclictest0-21swapper/121:15:581
2168991090,9rtkit-daemon2167-21rtkit-daemon22:27:581
18661998512,55cyclictest0-21swapper/120:47:001
40172820,4sleep03994-21ssh21:20:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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