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2026-03-07 - 02:45
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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 Fri Mar 06, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3636955997140,29cyclictest3659516-21kworker/1:108:20:141
3636955996941,27cyclictest3714797-21kworker/1:210:00:001
3636955996940,27cyclictest3635602-21kworker/1:207:10:141
3636955996840,27cyclictest3745359-21kworker/1:110:50:161
363695599681,64cyclictest3640687-21cron07:20:001
3636955996738,28cyclictest3758717-21kworker/1:011:00:141
3636955996735,29cyclictest3778260-21kworker/1:211:15:141
3636955996548,2cyclictest0-21swapper/109:33:571
3636955996538,25cyclictest1319056-1kworker/1:2H10:40:121
3636955996538,25cyclictest1319056-1kworker/1:2H07:25:001
3636955996537,26cyclictest3816652-21kworker/1:212:10:001
363695599651,62cyclictest3759216-21cron10:50:001
3636955996441,22cyclictest3650281-21kworker/1:107:50:141
3636955996438,24cyclictest3826751-21kworker/1:312:10:131
3636955996438,24cyclictest3758717-21kworker/1:011:05:141
3636955996438,24cyclictest3758717-21kworker/1:011:05:141
3636955996434,28cyclictest3655187-21kworker/1:208:10:131
3636955996434,28cyclictest3655187-21kworker/1:208:10:131
363695599630,60cyclictest0-21swapper/110:00:131
363695599630,60cyclictest0-21swapper/110:00:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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