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2026-08-22 - 05:46
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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 Sat Aug 22, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4051151996764,2cyclictest0-21swapper/119:40:291
4051151996663,2cyclictest0-21swapper/121:01:011
4051151996560,3cyclictest0-21swapper/119:18:481
405115199630,61cyclictest0-21swapper/120:03:481
4051151996242,19cyclictest51888-21kworker/1:100:20:141
4051151996242,19cyclictest4082913-21kworker/1:220:55:141
4051151996142,18cyclictest24107-21kworker/1:023:32:541
4051151996140,19cyclictest4131316-21kworker/1:122:00:141
4051151996044,15cyclictest4076483-21kworker/1:020:45:121
4051151996043,16cyclictest29171-21kworker/1:123:40:131
4051151996042,17cyclictest4182228-21kworker/1:222:55:021
4051151996042,17cyclictest4055533-21kworker/1:319:25:121
4051151996041,17cyclictest4150645-21kworker/1:022:30:121
4051151995943,15cyclictest4088192-21kworker/1:321:17:481
4051151995943,15cyclictest4055533-21kworker/1:319:20:481
4051151995942,16cyclictest51888-21kworker/1:100:10:141
4051151995942,16cyclictest4125795-21kworker/1:022:10:141
4051151995942,16cyclictest4109409-21kworker/1:221:35:161
4051151995942,16cyclictest4099758-21kworker/1:021:25:141
4051151995942,16cyclictest4076483-21kworker/1:020:40:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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