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2026-04-07 - 07:31
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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 rack1slot2.osadl.org (updated Tue Apr 07, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
670925352,0sleep00-21swapper/019:16:020
667525039,0sleep30-21swapper/319:15:413
696723627,0sleep20-21swapper/219:19:002
662622824,0sleep10-21swapper/119:15:071
7088991212,0cyclictest0-21swapper/021:20:300
70909960,0cyclictest0-21swapper/222:33:252
70909960,0cyclictest0-21swapper/222:10:142
70909960,0cyclictest0-21swapper/222:05:022
70909960,0cyclictest0-21swapper/221:24:122
35160,0ktimersoftd/30-21swapper/323:28:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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