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2025-12-08 - 09:28
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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 Mon Dec 08, 2025 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1186199405300,88cyclictest0-21swapper/020:35:250
1186299396280,25cyclictest11258-21ps20:35:251
1186199337270,56cyclictest41ktimersoftd/019:10:160
1147929521,27sleep00-21swapper/019:06:310
216899810,5rtkit-daemon2167-21rtkit-daemon23:03:241
66112760,4sleep1271ktimersoftd/122:30:481
216899760,4rtkit-daemon2167-21rtkit-daemon23:43:311
216899750,5rtkit-daemon2167-21rtkit-daemon00:26:411
216899750,4rtkit-daemon2167-21rtkit-daemon19:15:151
216899700,3rtkit-daemon2167-21rtkit-daemon19:05:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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