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2026-03-29 - 01:01
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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 Sat Mar 28, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
365899833756,48cyclictest0-21swapper/009:15:010
365999801722,51cyclictest0-21swapper/109:15:011
19392733711,14sleep10-21swapper/107:05:091
365899390333,46cyclictest0-21swapper/007:10:530
365999356297,43cyclictest0-21swapper/107:10:531
2286991100,4rtkit-daemon2285-21rtkit-daemon12:35:461
228699940,11rtkit-daemon0-21swapper/008:09:110
228699880,18rtkit-daemon2285-21rtkit-daemon09:36:170
228699820,8rtkit-daemon2285-21rtkit-daemon07:06:300
228699810,5rtkit-daemon2285-21rtkit-daemon07:55:150
228699810,4rtkit-daemon2285-21rtkit-daemon09:32:430
228699800,5rtkit-daemon2285-21rtkit-daemon09:50:130
228699800,5rtkit-daemon2285-21rtkit-daemon09:50:120
228699800,5rtkit-daemon2285-21rtkit-daemon09:30:531
6042760,10chrt0-21swapper/108:30:181
228699760,5rtkit-daemon2285-21rtkit-daemon09:07:561
228699760,4rtkit-daemon2285-21rtkit-daemon10:39:291
228699760,4rtkit-daemon2285-21rtkit-daemon07:35:150
365999759,50cyclictest0-21swapper/110:20:581
228699730,4rtkit-daemon2285-21rtkit-daemon10:44:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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