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2025-12-02 - 15:10
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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 20 highest latencies:
System rackeslot3.osadl.org (updated Tue Dec 02, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
147228996562,2cyclictest0-21swapper/120:07:461
147228996562,2cyclictest0-21swapper/119:25:061
147228996361,1cyclictest0-21swapper/120:14:191
147228996360,2cyclictest0-21swapper/120:41:201
14722899630,62cyclictest0-21swapper/120:38:001
14722899630,1cyclictest0-21swapper/100:23:461
147228996260,1cyclictest0-21swapper/122:00:411
147228996260,1cyclictest0-21swapper/121:59:531
147228996159,1cyclictest0-21swapper/100:18:241
147228996143,16cyclictest3102654-1kworker/1:1H20:15:161
147228996140,19cyclictest155984-21kworker/1:219:45:151
147228996135,25cyclictest246142-21kworker/1:000:25:151
147228996058,1cyclictest0-21swapper/123:10:421
147228996042,17cyclictest3102654-1kworker/1:1H19:45:001
147228996040,18cyclictest3102654-1kworker/1:1H22:55:171
147228995957,1cyclictest0-21swapper/120:34:451
147228995941,17cyclictest215182-21kworker/1:022:45:151
147228995933,15cyclictest165985-21kworker/1:221:26:191
147228995856,1cyclictest0-21swapper/123:29:241
147228995855,2cyclictest0-21swapper/120:53:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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