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2026-04-08 - 14:31
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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 Wed Apr 08, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2375524937,0sleep10-21swapper/107:18:071
2375123627,0sleep20-21swapper/207:18:042
2376123322,0sleep00-21swapper/007:18:100
2378623228,0sleep30-21swapper/307:18:293
4160,0ktimersoftd/00-21swapper/011:24:520
35160,0ktimersoftd/30-21swapper/311:24:523
339960,0migration/39946-21sh12:47:033
339960,0migration/36065-21sh10:54:273
339960,0migration/327622-21sh10:29:323
339960,0migration/323401-21sh12:18:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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