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2025-08-29 - 14:42
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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 Aug 29, 2025 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17872995454,12cyclictest0-21swapper/007:10:040
1787399480400,49cyclictest0-21swapper/107:36:351
174382441417,16sleep00-21swapper/007:06:010
1787299436355,52cyclictest0-21swapper/007:36:350
1787399360310,26cyclictest0-21swapper/107:10:051
921421190,3sleep09213-21ssh09:30:210
177212118100,12sleep10-21swapper/107:08:511
1559421080,4sleep015595-21ssh10:35:260
17872991045,8cyclictest5336-21ssh10:18:580
1787299994,79cyclictest28887-21diskmemload09:58:580
17872999610,80cyclictest0-21swapper/009:12:580
216899940,10rtkit-daemon0-21swapper/112:38:191
216899930,10rtkit-daemon0-21swapper/108:29:031
1787299932,12cyclictest30453-21ssh11:55:580
1787299932,12cyclictest30453-21ssh11:55:580
216899900,4rtkit-daemon2167-21rtkit-daemon08:56:541
240242850,2sleep1271ktimersoftd/107:25:201
216899830,4rtkit-daemon2167-21rtkit-daemon11:28:271
178632750,8sleep10-21swapper/111:35:171
216899730,4rtkit-daemon2167-21rtkit-daemon09:37:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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