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2026-05-25 - 11:42
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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 Mon May 25, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27697999626,20cyclictest26-21ksoftirqd/119:20:131
2648429537,42sleep00-21swapper/019:05:230
27697998257,12cyclictest26-21ksoftirqd/122:15:121
27697998252,16cyclictest26-21ksoftirqd/121:20:141
2746628022,47sleep10-21swapper/119:09:121
27697997811,56cyclictest0-21swapper/120:10:121
27697997748,17cyclictest26-21ksoftirqd/123:35:151
27697997660,9cyclictest26-21ksoftirqd/123:05:101
27697997649,16cyclictest26-21ksoftirqd/119:45:121
2769799758,53cyclictest14829-21apt-get21:35:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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