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2026-08-23 - 05:55
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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 Sun Aug 23, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
379682997444,28cyclictest3332910-1kworker/1:2H20:30:001
379682997444,28cyclictest3332910-1kworker/1:2H20:30:001
379682997341,30cyclictest442408-21kworker/1:021:40:131
379682996561,2cyclictest0-21swapper/121:07:471
379682996259,2cyclictest0-21swapper/122:49:181
379682996259,2cyclictest0-21swapper/120:05:481
379682996241,19cyclictest421614-21kworker/1:121:20:001
379682996240,19cyclictest3332910-1kworker/1:2H20:00:001
379682996235,25cyclictest524225-21kworker/1:023:10:131
379682996234,26cyclictest557779-21kworker/1:323:50:141
379682996142,18cyclictest539564-21kworker/1:323:30:151
379682996139,20cyclictest585724-21kworker/1:000:25:141
379682996128,31cyclictest3332910-1kworker/1:2H19:20:141
379682996042,17cyclictest524225-21kworker/1:023:20:151
379682996042,16cyclictest519533-21kworker/1:123:04:481
379682996040,19cyclictest3332910-1kworker/1:2H21:10:151
379682996035,24cyclictest3332910-1kworker/1:2H21:50:001
379682996032,26cyclictest495596-21kworker/1:122:40:181
379690995936,16cyclictest3299579-1kworker/3:0H22:25:163
379682995956,2cyclictest0-21swapper/119:47:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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