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2026-09-21 - 00:07
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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 rackeslot3.osadl.org (updated Sun Sep 20, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
862227996562,2cyclictest0-21swapper/109:57:301
86222799640,3cyclictest0-21swapper/112:05:011
86222799631,1cyclictest0-21swapper/108:35:231
862231996244,5cyclictest526925-1kworker/3:2H09:55:463
862227996040,18cyclictest1026875-21kworker/1:211:35:141
862227995941,17cyclictest943028-21kworker/1:110:04:431
862227995939,18cyclictest875492-21kworker/1:107:55:151
862227995855,2cyclictest0-21swapper/111:20:121
862227995842,15cyclictest903095-21kworker/1:009:15:021
862227995841,16cyclictest993116-21kworker/1:111:10:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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