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2026-03-11 - 04:52
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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 rack3slot6.osadl.org (updated Wed Mar 11, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3055210826,36sleep00-21swapper/019:05:040
4958999049,36cyclictest0-21swapper/021:30:110
321329054,23sleep10-21swapper/119:05:081
495899886,72cyclictest1773-21apt-get20:30:140
495899886,72cyclictest1773-21apt-get20:30:130
4958998814,68cyclictest0-21swapper/000:25:210
495899823,44cyclictest27307-21taskset23:10:100
4958998116,51cyclictest0-21swapper/000:00:130
4958998115,56cyclictest0-21swapper/019:35:140
4958998114,56cyclictest0-21swapper/019:45:220
4958998114,54cyclictest0-21swapper/021:00:100
4958998114,53cyclictest0-21swapper/023:25:120
4958998018,52cyclictest0-21swapper/022:30:110
4958998018,48cyclictest0-21swapper/023:35:130
495899795,64cyclictest29054-21apt-get23:15:150
4958997915,57cyclictest0-21swapper/022:05:230
4958997915,55cyclictest0-21swapper/020:55:120
4958997914,58cyclictest0-21swapper/020:40:140
4958997914,58cyclictest0-21swapper/019:20:130
4958997913,58cyclictest0-21swapper/019:40:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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