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2026-04-10 - 22:17
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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 rack5slot3.osadl.org (updated Fri Apr 10, 2026 12:55:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
164199982619,677cyclictest11617-21runrttasks12:44:496
164199974464,677cyclictest0-21swapper/610:14:406
164199973151,677cyclictest0-21swapper/611:54:446
1641399713203,296cyclictest0-21swapper/010:35:100
1641399713203,296cyclictest0-21swapper/010:35:090
1642099692351,126cyclictest0-21swapper/712:04:037
1641699688643,43cyclictest391rcuc/311:38:333
164179967075,592cyclictest0-21swapper/409:53:404
164139966222,381cyclictest0-21swapper/010:22:240
1641399655189,126cyclictest3283-21ssh11:19:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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