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2026-05-07 - 01:04
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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 May 06, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2936563997741,35cyclictest2936406-21kworker/1:007:20:141
2936563997517,57cyclictest0-21swapper/110:03:431
2936563997341,30cyclictest2399798-1kworker/1:2H10:39:591
2936563997243,28cyclictest3079479-21kworker/1:111:10:131
2936563997242,29cyclictest3154142-21kworker/1:112:25:001
2936563997040,29cyclictest2399798-1kworker/1:2H11:15:171
2936563997033,35cyclictest2399798-1kworker/1:2H11:45:011
2936563996943,24cyclictest2399798-1kworker/1:2H11:03:521
2936563996940,28cyclictest2399798-1kworker/1:2H11:45:121
2936563996937,30cyclictest2971438-21kworker/1:209:10:131
293656399691,65cyclictest0-21swapper/107:40:001
293656399680,65cyclictest0-21swapper/107:10:231
293656399661,63cyclictest0-21swapper/108:25:111
2936563996562,2cyclictest0-21swapper/108:39:011
2936563996537,27cyclictest3103902-21kworker/1:111:35:141
2936563996535,29cyclictest3103902-21kworker/1:111:35:011
293656399650,64cyclictest0-21swapper/107:18:171
293656399650,63cyclictest0-21swapper/112:30:121
2936563996435,28cyclictest2399798-1kworker/1:2H12:09:081
2936563996360,2cyclictest0-21swapper/108:09:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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