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2026-04-08 - 08:26
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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 Apr 08, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2503427996836,31cyclictest2516068-21kworker/1:120:05:141
2503427996836,31cyclictest2516068-21kworker/1:120:05:141
250342799681,65cyclictest0-21swapper/120:29:221
250342799681,64cyclictest604-21rs:main1
250342799681,64cyclictest604-21rs:main1
2503427996662,2cyclictest0-21swapper/122:17:231
250342799651,2cyclictest0-21swapper/100:21:281
2503427996345,16cyclictest2514529-21kworker/1:019:45:131
250342799630,62cyclictest0-21swapper/123:54:151
2503427996246,15cyclictest2616340-21kworker/1:122:50:141
2503427996245,16cyclictest2687832-21kworker/1:200:15:151
2503427996242,18cyclictest1960983-1kworker/1:0H20:50:011
2503427996142,18cyclictest2538417-21kworker/1:121:05:151
250342799610,60cyclictest0-21swapper/120:19:141
2503427996042,17cyclictest2705347-21kworker/1:000:30:141
2503427996041,18cyclictest2561768-21kworker/1:021:40:141
2503427996041,18cyclictest2561768-21kworker/1:021:40:131
2503427996041,17cyclictest2674925-21kworker/1:100:05:151
2503427996038,20cyclictest2591160-1kworker/1:1H23:50:011
2503427995944,14cyclictest2535078-21kworker/1:220:55:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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