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2025-12-14 - 01:19
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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 10 highest latencies:
System rack0slot5.osadl.org (updated Sun Dec 14, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37522049947325,29cyclictest0-21swapper/1200:27:424
37522049947324,29cyclictest0-21swapper/1221:11:424
37521579947226,28cyclictest0-21swapper/021:54:410
37522099946618,29cyclictest0-21swapper/1320:37:215
37521729946323,29cyclictest0-21swapper/421:06:5810
37521659946215,30cyclictest4018252-21updatedb00:37:218
37522099946113,29cyclictest0-21swapper/1321:18:225
37521729945614,28cyclictest0-21swapper/422:46:5810
3752209994514,29cyclictest0-21swapper/1323:48:425
3752157994517,29cyclictest0-21swapper/022:58:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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