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2026-09-08 - 12:21
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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 Tue Sep 08, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
285159910149,40cyclictest0-21swapper/020:45:120
26752210131,24sleep10-21swapper/119:05:051
28515999565,17cyclictest0-21swapper/022:40:130
28515999267,14cyclictest14-21ksoftirqd/023:40:120
28515999116,60cyclictest0-21swapper/000:10:150
28515999058,19cyclictest14-21ksoftirqd/023:25:160
28515998960,19cyclictest14-21ksoftirqd/021:10:140
282272895,22sleep00-21swapper/019:08:570
2851599887,70cyclictest1978-21apt-get19:25:130
28515998860,19cyclictest14-21ksoftirqd/021:20:140
28515998758,18cyclictest14-21ksoftirqd/021:35:150
28515998756,17cyclictest14-21ksoftirqd/022:10:160
28515998716,61cyclictest0-21swapper/021:45:140
28515998716,57cyclictest0-21swapper/021:40:140
28515998715,56cyclictest0-21swapper/019:35:140
28515998714,63cyclictest0-21swapper/021:00:170
2851599867,67cyclictest20705-21apt-get21:50:120
28515998654,20cyclictest14-21ksoftirqd/023:20:120
28515998626,54cyclictest0-21swapper/000:20:010
28515998614,57cyclictest0-21swapper/021:30:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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