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2026-06-30 - 04:34
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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 Tue Jun 30, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1136812996662,2cyclictest0-21swapper/120:02:271
113681299641,2cyclictest0-21swapper/119:23:241
1136812996344,17cyclictest1200365-21kworker/1:121:45:141
113681299631,60cyclictest0-21swapper/120:55:141
113681299630,62cyclictest0-21swapper/120:18:321
1136812996259,2cyclictest0-21swapper/121:34:451
1136812996246,15cyclictest1245465-21kworker/1:022:45:011
1136812996141,17cyclictest1229396-21kworker/1:222:10:001
1136812996042,16cyclictest1245465-21kworker/1:022:45:001
113681299602,54cyclictest0-21swapper/123:40:141
1136812995944,15cyclictest1245465-21kworker/1:022:35:151
1136812995943,15cyclictest1332337-21kworker/1:100:07:491
1136812995943,15cyclictest1306098-21kworker/1:123:35:011
1136812995943,15cyclictest1306098-21kworker/1:123:35:011
1136812995942,16cyclictest1200365-21kworker/1:121:40:141
1136812995941,16cyclictest1174732-21kworker/1:021:15:151
1136812995940,18cyclictest1320845-21kworker/1:000:00:121
1136812995938,20cyclictest1269728-21kworker/1:223:05:151
1136812995856,1cyclictest0-21swapper/122:51:131
1136812995844,14cyclictest1234523-21kworker/1:122:20:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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