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2026-03-27 - 19:33
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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 Mar 27, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312659911513,89cyclictest0-21swapper/007:45:130
312679910664,30cyclictest26-21ksoftirqd/109:05:131
312679910561,31cyclictest26-21ksoftirqd/107:45:121
312679910558,35cyclictest26-21ksoftirqd/110:15:161
312679910356,34cyclictest26-21ksoftirqd/109:25:141
312679910069,19cyclictest26-21ksoftirqd/111:40:151
3126599988,78cyclictest28207-21apt-get08:30:130
3126599986,46cyclictest36-21kcompactd008:35:230
31265999813,71cyclictest0-21swapper/007:30:120
31267999712,66cyclictest0-21swapper/110:35:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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