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2026-08-24 - 15:06
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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 24, 2026 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
632521450,4sleep10-21swapper/107:45:191
22831210927,34sleep00-21swapper/007:05:110
2427429837,45sleep10-21swapper/107:08:491
24558999164,15cyclictest14-21ksoftirqd/009:00:120
24558999060,19cyclictest14-21ksoftirqd/007:55:140
24558999060,19cyclictest14-21ksoftirqd/007:55:140
24558998967,11cyclictest14-21ksoftirqd/009:35:100
24558998960,16cyclictest0-21swapper/012:35:140
24558998958,19cyclictest14-21ksoftirqd/011:35:120
42912880,10chrt0-21swapper/109:10:251
24558998839,43cyclictest0-21swapper/008:45:130
24558998561,14cyclictest14-21ksoftirqd/008:50:140
24558998554,17cyclictest14-21ksoftirqd/011:10:140
24558998454,19cyclictest14-21ksoftirqd/007:30:120
24558998353,20cyclictest0-21swapper/008:00:150
24558998353,19cyclictest14-21ksoftirqd/009:10:130
24558998252,20cyclictest14-21ksoftirqd/007:25:150
24558998155,15cyclictest14-21ksoftirqd/011:30:120
24558998154,17cyclictest14-21ksoftirqd/010:30:150
24558998153,18cyclictest14-21ksoftirqd/007:20:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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