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2026-07-19 - 19:00
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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 Jul 19, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1034030996642,20cyclictest3138111-1kworker/1:1H10:30:001
1034029996650,14cyclictest1969060-1kworker/0:2H09:20:140
1034030996541,23cyclictest1037730-21kworker/1:207:25:141
1034030996259,2cyclictest0-21swapper/109:09:551
1034030996142,17cyclictest1108685-21kworker/1:310:00:141
1034030996043,16cyclictest1078392-21kworker/1:009:17:061
1034030996042,17cyclictest1097686-21kworker/1:109:45:151
1034030996041,18cyclictest1197650-21kworker/1:311:35:131
1034030996041,17cyclictest1031071-21kworker/1:007:15:001
1034029996043,14cyclictest1969060-1kworker/0:2H08:55:150
1034030995943,15cyclictest1087936-21kworker/1:009:35:161
1034030995942,16cyclictest1256176-21kworker/1:212:35:061
1034030995942,16cyclictest1128058-21kworker/1:210:15:141
1034030995942,16cyclictest1062774-21kworker/1:308:45:151
1034030995941,17cyclictest1045732-21kworker/1:208:15:001
1034030995940,17cyclictest3138111-1kworker/1:1H08:25:001
1034029995940,16cyclictest1969060-1kworker/0:2H11:55:290
1034030995855,2cyclictest0-21swapper/111:45:221
1034030995843,14cyclictest1246658-21kworker/1:212:25:161
1034030995843,14cyclictest1166327-21kworker/1:210:55:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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