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2025-04-02 - 04:17
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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 Wed Apr 02, 2025 00:45:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191720,7ptp4l25-21ksoftirqd/119:15:191
276002720,6sleep00-21swapper/020:50:300
2847191700,9ptp4l0-21swapper/321:27:293
2847191650,4ptp4l0-21swapper/122:35:131
2847191610,4ptp4l0-21swapper/322:48:203
2847191610,4ptp4l0-21swapper/321:34:143
2847191610,4ptp4l0-21swapper/321:13:343
15734996115,44cyclictest0-21swapper/121:29:201
2847191600,4ptp4l0-21swapper/321:21:033
2847191600,4ptp4l0-21swapper/321:01:003
2847191600,4ptp4l0-21swapper/320:39:213
2847191600,4ptp4l0-21swapper/319:26:083
2847191600,4ptp4l0-21swapper/023:23:320
2847191590,4ptp4l0-21swapper/120:39:391
2847191580,4ptp4l0-21swapper/321:19:033
2847191580,4ptp4l0-21swapper/320:14:033
2847191580,3ptp4l0-21swapper/221:31:402
2847191580,3ptp4l0-21swapper/220:21:492
2847191580,3ptp4l0-21swapper/120:34:421
1573399582,5cyclictest0-21swapper/023:05:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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