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2026-08-14 - 04:07
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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 Aug 14, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
217429911381,19cyclictest14-21ksoftirqd/000:35:150
217429910574,19cyclictest14-21ksoftirqd/019:10:120
217429910375,16cyclictest14-21ksoftirqd/021:05:140
21423210219,31sleep10-21swapper/119:08:301
217429910169,18cyclictest14-21ksoftirqd/022:15:130
217429910166,22cyclictest14-21ksoftirqd/020:55:120
21742999968,19cyclictest14-21ksoftirqd/022:50:130
21742999968,17cyclictest14-21ksoftirqd/019:45:130
21742999968,17cyclictest14-21ksoftirqd/019:45:130
21742999967,21cyclictest14-21ksoftirqd/022:30:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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