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2025-12-11 - 00:02
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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 Wed Dec 10, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4075163997343,28cyclictest4176015-21kworker/1:112:15:151
4075163997138,31cyclictest4089161-21kworker/1:207:50:171
4075163997034,34cyclictest4164331-21kworker/1:212:10:141
4075163996638,27cyclictest4157894-21kworker/1:211:25:151
407516399663,1cyclictest0-21swapper/112:38:591
4075163996538,26cyclictest4152972-21kworker/1:011:05:131
4075163996537,27cyclictest4105065-21kworker/1:209:05:161
4075163996537,26cyclictest2000280-1kworker/1:1H10:45:171
4075163996535,29cyclictest4152972-21kworker/1:011:20:001
4075163996461,2cyclictest0-21swapper/110:55:301
4075163996442,21cyclictest2000280-1kworker/1:1H09:25:061
4075163996440,22cyclictest2000280-1kworker/1:1H11:20:151
4075163996438,24cyclictest4117330-21kworker/1:009:35:141
407516399640,63cyclictest0-21swapper/109:44:131
407516399640,1cyclictest0-21swapper/111:43:191
4075163996332,29cyclictest2000280-1kworker/1:1H08:40:181
407516399630,1cyclictest0-21swapper/111:38:551
4075163996259,2cyclictest0-21swapper/112:28:541
4075163996252,6cyclictest0-21swapper/112:34:431
4075163996243,18cyclictest4148151-21kworker/1:210:50:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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