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2026-03-17 - 16:24
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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 Mar 17, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1430108997338,34cyclictest1446524-21kworker/1:208:00:141
1430108997242,29cyclictest1578039-21kworker/1:311:20:131
1430108997039,29cyclictest3445000-1kworker/1:1H12:39:181
1430108996835,31cyclictest1562080-21kworker/1:211:05:131
1430108996641,23cyclictest1508732-21kworker/1:110:00:121
143010899652,62cyclictest0-21swapper/109:21:381
143010899650,63cyclictest0-21swapper/110:50:001
1430108996360,2cyclictest0-21swapper/111:37:401
1430108996360,2cyclictest0-21swapper/110:05:131
1430108996245,16cyclictest1508732-21kworker/1:109:58:401
143010899603,55cyclictest1556862-21kworker/1:011:00:041
143010899600,58cyclictest0-21swapper/110:55:321
1430108995943,15cyclictest1568679-21kworker/1:111:10:141
1430108995942,16cyclictest1508709-21kworker/1:010:30:051
1430108995941,17cyclictest1568679-21kworker/1:111:30:121
1430108995941,16cyclictest1438708-21kworker/1:007:36:201
1430108995926,31cyclictest1443203-21kworker/1:307:55:131
143010899590,58cyclictest0-21swapper/110:14:471
143010899590,57cyclictest0-21swapper/111:54:151
1430108995842,15cyclictest1607627-21kworker/1:312:05:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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