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2025-07-15 - 22:28
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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
Characteristics of the 20 highest latencies:
System rackdslot1.osadl.org (updated Tue Jul 15, 2025 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2232821640,7sleep01908499cyclictest10:45:160
2093821310,4sleep00-21swapper/011:50:270
2847191670,5ptp4l0-21swapper/110:30:131
2847191670,10ptp4l0-21swapper/212:35:072
2847191630,4ptp4l0-21swapper/011:15:250
278432630,4sleep10-21swapper/109:45:271
2847191600,4ptp4l0-21swapper/209:45:182
2847191600,4ptp4l0-21swapper/209:40:262
2847191600,4ptp4l0-21swapper/111:55:231
2847191590,4ptp4l0-21swapper/109:50:161
2847191590,4ptp4l0-21swapper/108:00:291
2847191590,3ptp4l0-21swapper/210:55:262
2847191590,3ptp4l0-21swapper/010:20:050
95942580,7sleep21908899cyclictest11:25:262
2847191580,4ptp4l0-21swapper/312:10:193
2847191580,4ptp4l0-21swapper/312:10:183
2847191580,4ptp4l0-21swapper/309:52:223
2847191580,4ptp4l0-21swapper/211:40:402
2847191580,3ptp4l14625-21grep11:35:293
2847191580,3ptp4l0-21swapper/208:20:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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