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2026-09-02 - 00:47
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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 rack1slot8.osadl.org (updated Tue Sep 01, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2614099859743,85cyclictest6524-21ssh09:11:451
2613999823714,77cyclictest0-21swapper/009:11:450
2613999489401,80cyclictest0-21swapper/007:10:130
26140994532,428cyclictest26522-21df07:10:131
261399911512,97cyclictest0-21swapper/012:21:580
261399911113,92cyclictest0-21swapper/010:48:590
261399910016,65cyclictest0-21swapper/007:18:000
26139999712,79cyclictest0-21swapper/011:24:000
26139999237,42cyclictest0-21swapper/011:53:590
26139998623,57cyclictest0-21swapper/012:38:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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