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2026-07-26 - 01:14
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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 25, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17679799681,65cyclictest0-21swapper/111:00:031
17679799671,2cyclictest0-21swapper/107:40:141
176797996562,1cyclictest0-21swapper/112:36:401
176797996541,22cyclictest231540-21kworker/1:109:40:141
176797996462,1cyclictest0-21swapper/111:59:041
176797996462,1cyclictest0-21swapper/111:59:031
176797996445,18cyclictest271509-21kworker/1:110:14:551
176797996345,17cyclictest1454764-1kworker/1:2H11:50:131
176797996345,17cyclictest1454764-1kworker/1:2H11:50:121
176797996242,18cyclictest319988-21kworker/1:011:10:161
17679799620,61cyclictest0-21swapper/107:20:451
176797996143,17cyclictest307641-21kworker/1:111:00:001
176797996143,16cyclictest1454764-1kworker/1:2H12:05:551
176797996142,18cyclictest1454764-1kworker/1:2H08:05:221
17679799610,60cyclictest0-21swapper/110:53:331
176797996058,1cyclictest0-21swapper/109:25:261
176797996042,17cyclictest292616-21kworker/1:010:40:161
176797996042,17cyclictest1454764-1kworker/1:2H10:20:171
176797996042,16cyclictest1454764-1kworker/1:2H09:55:151
176797996039,19cyclictest315136-21kworker/1:211:05:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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