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2026-06-11 - 00:01
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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 Jun 10, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3026621110,5chrt30267-21sh07:25:200
240849911071,27cyclictest14-21ksoftirqd/010:50:130
240849911070,28cyclictest14-21ksoftirqd/012:05:270
240849911012,83cyclictest0-21swapper/012:35:130
240849911011,83cyclictest0-21swapper/011:00:130
240849910911,82cyclictest0-21swapper/007:15:110
240849910811,82cyclictest0-21swapper/010:25:120
240849910672,22cyclictest14-21ksoftirqd/010:05:130
240849910610,83cyclictest0-21swapper/009:30:120
240849910559,33cyclictest14-21ksoftirqd/012:30:120
240849910455,38cyclictest14-21ksoftirqd/010:10:100
240849910455,38cyclictest14-21ksoftirqd/010:10:100
240849910412,77cyclictest0-21swapper/012:15:120
24084991039,28cyclictest0-21swapper/008:15:130
240849910371,21cyclictest0-21swapper/008:50:100
240849910313,27cyclictest0-21swapper/010:20:110
240849910260,32cyclictest14-21ksoftirqd/007:50:110
240849910210,77cyclictest0-21swapper/008:10:140
23795210216,39sleep00-21swapper/007:08:520
240849910162,29cyclictest14-21ksoftirqd/007:45:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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