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2026-05-08 - 01:23
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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 Thu May 07, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3523612997133,36cyclictest2251321-1kworker/1:2H09:05:001
3523612997037,31cyclictest3675568-21kworker/1:211:19:411
3523612996940,27cyclictest2251321-1kworker/1:2H07:15:131
3523612996642,21cyclictest2251321-1kworker/1:2H10:35:001
3523612996561,2cyclictest0-21swapper/112:24:101
3523612996534,29cyclictest3721494-21kworker/1:312:05:141
352361299650,1cyclictest3544940-21kworker/1:108:18:061
352361299640,63cyclictest0-21swapper/108:25:351
3523612996360,2cyclictest0-21swapper/110:56:051
3523612996335,26cyclictest3567449-21kworker/1:209:30:131
352361299630,61cyclictest3631742-21kworker/1:310:50:111
352361299630,2cyclictest0-21swapper/111:47:101
3523612996260,1cyclictest0-21swapper/110:40:301
3523612996260,1cyclictest0-21swapper/110:40:301
3523612996246,15cyclictest3607597-21kworker/1:010:05:001
3523612996145,15cyclictest3530167-21kworker/1:207:40:011
3523612996141,19cyclictest3525780-21kworker/1:107:25:141
3523612996141,17cyclictest2251321-1kworker/1:2H08:05:011
3523612996135,25cyclictest2251321-1kworker/1:2H10:20:141
3523612996127,33cyclictest3740998-21kworker/1:212:35:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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