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2026-06-10 - 17:26
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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 20 highest latencies:
System rack1slot8.osadl.org (updated Wed Jun 10, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194962947924,16sleep10-21swapper/107:06:081
194452900875,17sleep00-21swapper/007:05:380
1992199508430,52cyclictest0-21swapper/007:13:530
1992299461381,48cyclictest0-21swapper/107:13:531
2962621470,4sleep129625-21grep10:05:011
1120821080,3sleep011209-21cut10:30:010
19921998970,14cyclictest0-21swapper/012:29:590
19922998727,41cyclictest0-21swapper/112:31:591
228699820,5rtkit-daemon2285-21rtkit-daemon09:55:260
228699780,4rtkit-daemon2285-21rtkit-daemon08:45:151
19922997815,42cyclictest0-21swapper/110:29:591
228699760,3rtkit-daemon2285-21rtkit-daemon10:23:461
19922997617,37cyclictest0-21swapper/111:22:581
19922997418,37cyclictest0-21swapper/109:35:591
228699720,3rtkit-daemon2285-21rtkit-daemon10:36:170
19922997218,34cyclictest0-21swapper/109:33:581
19922997218,32cyclictest0-21swapper/109:04:581
19922997216,35cyclictest0-21swapper/108:31:581
19922997215,37cyclictest0-21swapper/107:33:591
228699710,4rtkit-daemon2285-21rtkit-daemon12:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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