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2026-01-09 - 15:52
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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 rack5slot3.osadl.org (updated Fri Jan 09, 2026 12:50:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1680829487,4sleep00-21swapper/007:05:160
1818828554,26sleep40-21swapper/407:09:544
1813427743,30sleep60-21swapper/607:09:076
1809627744,29sleep70-21swapper/707:08:367
1808027739,34sleep30-21swapper/307:08:243
1818627643,29sleep20-21swapper/207:09:522
1559227642,30sleep50-21swapper/507:05:055
1799527238,30sleep10-21swapper/107:07:101
18629994638,7cyclictest0-21swapper/511:50:105
89922430,1sleep31862799cyclictest10:25:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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