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2026-07-04 - 08:37
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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 Jul 04, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3266574997239,21cyclictest1197962-1kworker/1:2H21:05:011
3266574996745,20cyclictest1197962-1kworker/1:2H22:19:591
326657499670,64cyclictest3300001-21cron20:55:001
3266574996432,16cyclictest3330633-21kworker/1:121:45:121
3266574996360,2cyclictest0-21swapper/100:15:141
3266574996330,31cyclictest3282739-21kworker/1:220:10:141
3266574996260,1cyclictest0-21swapper/121:14:481
3266574996260,1cyclictest0-21swapper/121:14:481
3266574996259,2cyclictest0-21swapper/123:27:091
3266574996245,16cyclictest3464584-21kworker/1:300:10:131
3266574996244,17cyclictest3446572-21kworker/1:023:50:141
3266574996242,19cyclictest3421025-21kworker/1:123:20:001
3266574996232,29cyclictest3281199-21kworker/1:119:55:161
3266574996058,1cyclictest0-21swapper/123:35:121
3266574996042,17cyclictest1197962-1kworker/1:2H22:40:431
3266574996041,18cyclictest3282739-21kworker/1:220:05:001
3266574996041,17cyclictest3403415-21kworker/1:223:00:131
3266574996040,18cyclictest3425699-21kworker/1:223:30:011
3266574995940,18cyclictest1197962-1kworker/1:2H23:49:591
3266574995937,20cyclictest1197962-1kworker/1:2H19:30:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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