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2026-09-04 - 23:48
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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 rack3slot6.osadl.org (updated Fri Sep 04, 2026 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138099131101,21cyclictest14-21ksoftirqd/012:35:240
13809911181,18cyclictest14-21ksoftirqd/008:00:110
13809910978,19cyclictest14-21ksoftirqd/011:20:140
13809910774,22cyclictest14-21ksoftirqd/012:25:240
13809910774,20cyclictest14-21ksoftirqd/010:30:130
13809910770,24cyclictest14-21ksoftirqd/008:15:110
13809910712,80cyclictest0-21swapper/011:05:120
13809910563,30cyclictest14-21ksoftirqd/009:25:140
13809910557,30cyclictest14-21ksoftirqd/010:35:140
13809910472,20cyclictest14-21ksoftirqd/008:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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