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2026-06-11 - 12:39
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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 Jun 11, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3923487996461,2cyclictest0-21swapper/119:20:081
3923487996446,16cyclictest1761500-1kworker/1:1H00:23:431
3923487996360,2cyclictest0-21swapper/121:14:131
3923487996343,19cyclictest3988858-21kworker/1:121:55:001
3923487996159,1cyclictest0-21swapper/122:31:411
3923487996158,2cyclictest0-21swapper/119:16:081
3923487996143,17cyclictest3988858-21kworker/1:121:55:011
392348799610,60cyclictest0-21swapper/122:03:421
3923487995941,17cyclictest3947945-21kworker/1:020:30:001
3923487995938,20cyclictest3926855-21kworker/1:019:34:591
3923487995842,15cyclictest1761500-1kworker/1:1H21:40:131
3923487995841,16cyclictest4025857-21kworker/1:122:35:141
3923487995742,14cyclictest4099280-21kworker/1:200:08:361
3923487995742,14cyclictest4099280-21kworker/1:200:00:131
3923487995742,14cyclictest4050558-21kworker/1:022:54:141
3923487995742,14cyclictest3964805-21kworker/1:021:20:421
3923487995742,14cyclictest3919147-21kworker/1:219:10:011
3923487995741,15cyclictest4055128-21kworker/1:123:00:141
3923487995740,16cyclictest3944588-21kworker/1:220:15:141
3923487995641,14cyclictest4124631-21kworker/1:100:25:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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