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2026-01-11 - 19:35
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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 Jan 11, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134658996561,2cyclictest0-21swapper/109:49:501
134658996561,2cyclictest0-21swapper/109:49:501
134658996533,30cyclictest1032281-1kworker/1:2H08:24:591
134658996445,17cyclictest188334-21kworker/1:310:10:131
13465899640,2cyclictest0-21swapper/107:30:001
13465899630,62cyclictest0-21swapper/107:45:001
13465899630,61cyclictest0-21swapper/110:30:211
134658996259,2cyclictest0-21swapper/108:39:441
134658996241,20cyclictest209490-21kworker/1:311:15:001
134658996141,19cyclictest175659-21kworker/1:209:35:141
134658996133,27cyclictest186720-21kworker/1:209:55:221
134658996058,1cyclictest0-21swapper/109:21:091
134658996042,17cyclictest223547-21kworker/1:111:55:141
134658996039,20cyclictest225166-21kworker/1:312:00:151
134658995943,15cyclictest191608-21kworker/1:110:20:311
134658995942,16cyclictest216550-21kworker/1:211:30:011
134658995941,17cyclictest1032281-1kworker/1:2H12:25:151
134658995941,16cyclictest213449-21kworker/1:011:25:141
134658995856,1cyclictest0-21swapper/108:04:321
134658995843,14cyclictest164865-21kworker/1:108:45:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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