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2025-12-22 - 07:05
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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 rack0slot7.osadl.org (updated Mon Dec 22, 2025 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1851690994664,56cyclictest2782215-21dd22:51:2015
1851694994611,56cyclictest2204920-21StreamT~s5
18516929946122,28cyclictest0-21swapper/1120:38:593
18516949945912,445cyclictest0-21swapper/1323:37:215
18516949945724,28cyclictest0-21swapper/1322:09:395
18516949945623,27cyclictest0-21swapper/1319:47:335
18516949945622,27cyclictest0-21swapper/1322:52:225
18516829945622,27cyclictest0-21swapper/122:18:391
18516909945320,27cyclictest0-21swapper/923:40:3915
18516949945218,27cyclictest0-21swapper/1320:43:215
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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