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2025-11-07 - 07:53
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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 Fri Nov 07, 2025 00:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
133129918101742,54cyclictest0-21swapper/019:34:240
133129918101742,54cyclictest0-21swapper/019:34:230
129112923904,12sleep10-21swapper/119:06:241
1331299880801,52cyclictest0-21swapper/019:10:050
1331399832752,47cyclictest0-21swapper/119:10:051
128622362339,16sleep00-21swapper/019:05:490
1331399361295,53cyclictest0-21swapper/119:34:241
1331399361295,53cyclictest0-21swapper/119:34:231
133139912318,68cyclictest0-21swapper/100:26:581
13313999616,62cyclictest0-21swapper/121:44:001
13312998870,13cyclictest0-21swapper/023:57:590
13312998364,15cyclictest0-21swapper/023:26:590
216899800,4rtkit-daemon2167-21rtkit-daemon22:33:211
216899780,5rtkit-daemon2167-21rtkit-daemon22:04:190
216899780,4rtkit-daemon2167-21rtkit-daemon20:10:171
216899760,3rtkit-daemon2167-21rtkit-daemon23:18:561
216899750,4rtkit-daemon2167-21rtkit-daemon23:28:011
216899740,33rtkit-daemon2167-21rtkit-daemon23:45:261
13313997418,41cyclictest0-21swapper/123:59:591
216899730,4rtkit-daemon2167-21rtkit-daemon23:40:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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