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2026-08-26 - 08:08
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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 Wed Aug 26, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
730021160,5sleep10-21swapper/119:10:361
1686921010,7sleep10-21swapper/119:35:381
613199856,69cyclictest14070-21apt-get21:00:130
580027615,53sleep00-21swapper/019:08:220
6131997342,17cyclictest14-21ksoftirqd/021:13:310
6134997234,31cyclictest26-21ksoftirqd/123:15:301
6131997212,16cyclictest0-21swapper/019:35:150
613499717,55cyclictest5034-21apt-get22:05:151
613199707,54cyclictest22877-21apt-get22:55:130
6131996934,30cyclictest14-21ksoftirqd/000:10:270
6131996931,22cyclictest14-21ksoftirqd/022:15:280
6134996837,24cyclictest26-21ksoftirqd/119:20:281
6134996836,18cyclictest26-21ksoftirqd/122:25:001
6134996833,17cyclictest26-21ksoftirqd/122:50:211
6134996831,31cyclictest26-21ksoftirqd/119:40:371
6131996835,28cyclictest14-21ksoftirqd/019:15:350
6134996736,24cyclictest26-21ksoftirqd/119:15:041
6134996735,18cyclictest26-21ksoftirqd/121:39:011
6134996735,17cyclictest26-21ksoftirqd/120:15:191
6134996734,27cyclictest26-21ksoftirqd/123:05:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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