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2026-04-17 - 01:38
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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 Fri Apr 17, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25171999112,876cyclictest2567-21irqstats19:35:170
2517299739715,9cyclictest0-21swapper/119:35:171
249762603581,15sleep10-21swapper/119:08:231
2517199513436,67cyclictest0-21swapper/019:10:110
246762464441,15sleep00-21swapper/019:05:250
2517299344271,55cyclictest25329-21ps19:10:101
251719911893,20cyclictest0-21swapper/022:33:580
133672940,7sleep10-21swapper/122:24:111
228699930,3rtkit-daemon8551-21ssh23:13:231
228699930,3rtkit-daemon8551-21ssh23:13:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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