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2026-05-24 - 19:37
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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 Sun May 24, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2477999066,15cyclictest14-21ksoftirqd/012:00:110
232528624,16sleep10-21swapper/107:09:441
2477998556,16cyclictest14-21ksoftirqd/012:05:120
2477998515,56cyclictest0-21swapper/012:30:110
2477998456,18cyclictest14-21ksoftirqd/009:40:230
2477998315,56cyclictest0-21swapper/011:55:130
2477998314,54cyclictest0-21swapper/011:35:110
2477998214,57cyclictest0-21swapper/010:00:140
2477998113,56cyclictest0-21swapper/010:45:140
247799806,59cyclictest4410-21apt-get08:45:130
2477998051,16cyclictest14-21ksoftirqd/007:15:110
247799802,71cyclictest2516-21netstat11:40:270
2477998017,49cyclictest0-21swapper/007:20:130
2477998016,51cyclictest0-21swapper/009:55:140
2477998014,52cyclictest0-21swapper/009:05:130
2477998013,53cyclictest0-21swapper/007:55:140
2477998012,55cyclictest0-21swapper/009:35:120
247799797,61cyclictest21078-21apt-get12:35:130
247799797,60cyclictest14920-21apt-get09:15:130
2477997914,52cyclictest0-21swapper/010:20:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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