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2026-08-31 - 13:16
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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 Aug 31, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2037029922,32sleep10-21swapper/119:08:151
20725999362,19cyclictest26-21ksoftirqd/123:50:131
20725999163,18cyclictest26-21ksoftirqd/120:30:131
20725999064,17cyclictest26-21ksoftirqd/123:35:171
20725998961,18cyclictest26-21ksoftirqd/123:30:121
2072199897,65cyclictest0-21swapper/019:35:130
2025928919,25sleep00-21swapper/019:07:030
20725998859,19cyclictest26-21ksoftirqd/121:30:151
20725998859,17cyclictest26-21ksoftirqd/100:20:141
20725998562,14cyclictest26-21ksoftirqd/121:40:121
20725998560,16cyclictest26-21ksoftirqd/123:15:131
20725998555,17cyclictest26-21ksoftirqd/121:55:141
20725998554,22cyclictest26-21ksoftirqd/122:40:121
20725998358,17cyclictest26-21ksoftirqd/120:35:111
20725998354,19cyclictest26-21ksoftirqd/122:00:131
2072199838,12cyclictest0-21swapper/022:15:120
20725998250,18cyclictest26-21ksoftirqd/121:50:141
20725998049,19cyclictest26-21ksoftirqd/121:15:141
20725998048,21cyclictest26-21ksoftirqd/119:50:141
20725998045,29cyclictest26-21ksoftirqd/120:50:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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