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2026-07-20 - 22:23
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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 Mon Jul 20, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
67819912126,81cyclictest0-21swapper/007:35:130
67849911714,31cyclictest0-21swapper/108:45:151
67819911012,83cyclictest0-21swapper/009:00:120
67849910912,30cyclictest0-21swapper/108:35:131
67819910877,19cyclictest14-21ksoftirqd/012:00:120
67819910771,25cyclictest14-21ksoftirqd/007:55:130
67819910710,81cyclictest0-21swapper/010:35:140
67819910512,78cyclictest0-21swapper/011:05:120
67819910362,27cyclictest14-21ksoftirqd/012:35:130
67819910312,29cyclictest0-21swapper/008:40:140
67819910260,30cyclictest14-21ksoftirqd/011:55:160
67819910259,31cyclictest14-21ksoftirqd/010:00:130
67819910210,80cyclictest0-21swapper/008:30:230
67819910111,29cyclictest0-21swapper/011:25:120
67819910054,33cyclictest14-21ksoftirqd/009:10:140
67819910053,35cyclictest14-21ksoftirqd/011:00:130
67819910012,27cyclictest0-21swapper/008:10:140
6781999854,33cyclictest14-21ksoftirqd/008:25:150
6784999720,32cyclictest0-21swapper/109:15:131
6781999748,39cyclictest14-21ksoftirqd/007:10:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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