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2025-11-30 - 11:01
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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 Sun Nov 30, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
388924899660,2cyclictest0-21swapper/122:08:081
388924899660,2cyclictest0-21swapper/119:57:021
388924899650,64cyclictest0-21swapper/120:55:331
3889248996461,2cyclictest0-21swapper/122:10:141
3889248996360,2cyclictest0-21swapper/121:40:021
3889248996244,17cyclictest3988485-21kworker/1:100:14:381
3889248996236,23cyclictest3930974-21kworker/1:021:35:151
3889248996144,16cyclictest3930974-21kworker/1:021:19:371
3889248996144,16cyclictest3901301-1kworker/1:0H22:25:141
3889248996043,16cyclictest3949186-21kworker/1:222:15:171
3889248996033,26cyclictest3970536-21kworker/1:023:25:161
3889248995943,15cyclictest3978967-21kworker/1:223:45:061
3889248995943,15cyclictest3978967-21kworker/1:223:42:411
3889248995943,15cyclictest3970536-21kworker/1:023:32:391
3889248995943,15cyclictest3949186-21kworker/1:222:43:371
3889248995943,15cyclictest3949186-21kworker/1:222:30:151
3889248995943,15cyclictest3906185-21kworker/1:220:45:011
3889248995943,15cyclictest3906185-21kworker/1:220:21:591
3889248995942,16cyclictest3963449-21kworker/1:123:10:151
3889248995942,16cyclictest3906185-21kworker/1:220:52:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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