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2026-08-20 - 19:49
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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 Thu Aug 20, 2026 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86309910780,18cyclictest14-21ksoftirqd/009:35:150
86309910478,17cyclictest14-21ksoftirqd/011:30:120
86309910476,19cyclictest14-21ksoftirqd/011:00:140
86309910275,18cyclictest14-21ksoftirqd/007:30:120
86309910272,20cyclictest14-21ksoftirqd/010:00:150
86309910170,20cyclictest14-21ksoftirqd/009:10:130
86309910071,16cyclictest0-21swapper/009:20:130
817029926,29sleep10-21swapper/107:06:591
227212990,6chrt22724-21awk07:45:350
8630999867,20cyclictest14-21ksoftirqd/009:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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