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2026-06-22 - 18:30
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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 Mon Jun 22, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3684227997042,27cyclictest3806848-21kworker/1:011:05:121
3684227997037,31cyclictest3846286-21kworker/1:111:40:151
3684227996937,30cyclictest3701494-21kworker/1:208:35:151
3684227996841,26cyclictest3827609-21kworker/1:111:15:151
3684227996840,26cyclictest3884498-21kworker/1:112:35:121
3684227996740,26cyclictest791721-1kworker/1:2H09:10:151
3684227996739,27cyclictest3696008-21kworker/1:307:55:161
3684227996738,28cyclictest3733108-21kworker/1:109:25:141
3684227996736,29cyclictest3864445-21kworker/1:212:15:141
3684227996640,24cyclictest791721-1kworker/1:2H09:20:131
3684227996640,24cyclictest791721-1kworker/1:2H09:20:121
3684227996638,27cyclictest3864445-21kworker/1:212:10:141
3684227996535,29cyclictest3837288-21kworker/1:211:30:101
3684227996535,28cyclictest3815895-21kworker/1:111:00:061
3684227996438,25cyclictest3760772-21kworker/1:209:55:111
3684227996436,26cyclictest791721-1kworker/1:2H08:25:151
3684227996339,23cyclictest3701494-21kworker/1:208:10:161
3684227996333,28cyclictest3797039-21kworker/1:110:45:131
3684227996158,2cyclictest0-21swapper/108:20:121
3684227996151,8cyclictest0-21swapper/110:45:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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