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2025-11-29 - 09:15
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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 Sat Nov 29, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3689121996759,5cyclictest2841348-1kworker/0:1H23:55:010
3689126996662,2cyclictest0-21swapper/120:37:091
3689126996539,21cyclictest3720407-21kworker/1:221:10:131
3689126996359,2cyclictest0-21swapper/121:40:051
3689126996333,24cyclictest1447917-1kworker/1:1H19:45:001
3689126996243,18cyclictest3766099-21kworker/1:123:10:191
3689126996142,18cyclictest3746116-21kworker/1:022:15:161
3689126996139,21cyclictest3755803-21kworker/1:322:50:141
3689126996043,16cyclictest3734748-21kworker/1:221:35:001
3689126996043,16cyclictest3734748-21kworker/1:221:32:261
3689126996043,16cyclictest3704715-21kworker/1:019:55:441
3689126996039,19cyclictest3779337-21kworker/1:200:05:141
3689126995957,1cyclictest0-21swapper/122:48:081
3689126995955,2cyclictest0-21swapper/122:23:081
3689126995943,15cyclictest3720407-21kworker/1:220:52:271
3689126995943,15cyclictest3702550-21kworker/1:220:10:151
3689126995942,16cyclictest3779337-21kworker/1:200:25:001
3689126995942,16cyclictest3672360-21kworker/1:319:25:151
3689126995942,15cyclictest3746116-21kworker/1:022:12:281
3689126995939,19cyclictest3702550-21kworker/1:219:50:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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