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2026-06-02 - 01:15
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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 01, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
972055997441,29cyclictest997394-21kworker/1:208:30:011
972055997142,27cyclictest992482-21kworker/1:108:15:001
972055996837,30cyclictest1044890-21kworker/1:210:05:001
972055996738,27cyclictest3109315-1kworker/1:0H11:40:131
972055996640,25cyclictest992482-21kworker/1:108:20:151
972055996637,28cyclictest3109315-1kworker/1:0H08:10:211
972055996637,27cyclictest971871-21kworker/1:107:10:141
97205599661,2cyclictest0-21swapper/112:00:151
972055996541,22cyclictest1093904-21kworker/1:110:55:151
972055996435,28cyclictest1035480-21kworker/1:109:50:151
972055996353,8cyclictest0-21swapper/110:35:001
972055996345,17cyclictest984794-21kworker/1:008:00:001
972055996333,29cyclictest3109315-1kworker/1:0H11:10:141
972055996333,28cyclictest1074667-21kworker/1:310:30:011
972055996242,18cyclictest3109315-1kworker/1:0H12:25:141
972055996237,24cyclictest1021962-21kworker/1:209:40:001
972055996235,26cyclictest1145114-21kworker/1:211:59:561
972055996144,16cyclictest1078946-21kworker/1:010:40:011
972055996142,18cyclictest1021962-21kworker/1:209:25:181
972055996057,2cyclictest0-21swapper/111:45:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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